/* ============================================================================
   Saj Serve marketing site — SIGNAL design system, marketing scale. v2.
   Derived from apps/web/src/styles/marty-tokens.css (the canonical source).
   Hard rules honoured: radius ≤4px · 1px hairlines only · no drop shadows ·
   one accent (--signal) · mono is structural, not decorative.
   v2 (post adversarial review): 7-step type scale · 3 tracking values ·
   structural hairlines ≥3:1 · no-JS renders everything · one marker primitive
   · one timing scale.
   ========================================================================== */

/* ---- fonts (self-hosted; a sovereignty brand loads nothing from a CDN) --- */
@font-face { font-family: 'Space Grotesk'; src: url('../fonts/space-grotesk-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'Space Grotesk'; src: url('../fonts/space-grotesk-700.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'Geist'; src: url('../fonts/geist-sans-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Geist'; src: url('../fonts/geist-sans-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'Geist'; src: url('../fonts/geist-sans-600.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Geist Mono'; src: url('../fonts/geist-mono-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Geist Mono'; src: url('../fonts/geist-mono-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }

:root {
  /* ground */
  --void: #040506;
  --void-raised: #0A0C0F;
  --void-panel: #0F1216;
  --void-inset: #060709;
  --void-signal: #0A0F0C;

  /* ink — all text tones pass 4.5:1 on --void except --ink-ghost (non-text) */
  --ink: #F3F4F5;        /* 17.9:1 */
  --ink-dim: #B5B8BC;    /* 10.2:1 */
  --ink-mist: #8E9398;   /*  6.3:1 — smallest text tone */
  --ink-low: #5A5F64;    /*  3.1:1 — recessed states, ≥14px only */
  --ink-ghost: #3C4045;  /*  non-text decoration only */

  /* the one accent */
  --signal: #7DFFC1;
  --signal-dim: #3FB084;
  --signal-deep: #1E6B4E;
  --signal-ink: #04140C;
  --signal-hi: #93FFD0;

  /* hairlines — struct is the strongest structural tone, plain is optical only */
  --hairline: rgba(255,255,255,0.13);
  --hairline-struct: rgba(255,255,255,0.30);
  --hairline-accent: rgba(125,255,193,0.35);

  /* type — 7 sizes, 3 trackings. nothing else exists. */
  --display: 'Space Grotesk', system-ui, sans-serif;
  --body: 'Geist', system-ui, sans-serif;
  --mono: 'Geist Mono', ui-monospace, 'SF Mono', monospace;
  --t-micro: 0.6875rem;                                /* 11px  mono labels   */
  --t-sm: 0.8125rem;                                   /* 13px  captions/meta */
  --t-base: 0.9375rem;                                 /* 15px  secondary body*/
  --t-body: 1.0625rem;                                 /* 17px  prose         */
  --t-h3: 1.25rem;
  --t-h2: clamp(1.6rem, 1.15rem + 2.1vw, 2.5rem);
  --t-h1: clamp(2.25rem, 1.4rem + 4.2vw, 4.4rem);
  --track-up: 0.12em;     /* mono uppercase labels */
  --track-mono: 0.02em;   /* mono sentence case    */
  --track-display: -0.02em;

  /* motion — one scale, one ease */
  --t-fast: 140ms;
  --t-mid: 280ms;
  --t-slow: 560ms;
  --ease: cubic-bezier(.2,.6,.2,1);

  /* layout */
  --w: 1160px;
  --gutter: clamp(20px, 4vw, 48px);
  --sect-sm: clamp(64px, 8vw, 96px);
  --sect: clamp(96px, 11vw, 144px);
  --sect-lg: clamp(140px, 16vw, 216px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  background: var(--void);
  color: var(--ink);
  font-family: var(--body);
  font-size: var(--t-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--signal-deep); color: var(--ink); }

a { color: inherit; text-decoration: none; }
p a, .prose a { color: var(--ink); border-bottom: 1px solid var(--hairline-accent); transition: border-color var(--t-fast) var(--ease); }
p a:hover, .prose a:hover { border-color: var(--signal); }

img, svg { max-width: 100%; height: auto; }

:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: var(--gutter); top: 12px; z-index: 60; background: var(--signal); color: var(--signal-ink); padding: 10px 16px; border-radius: 3px; font-family: var(--mono); font-size: var(--t-sm); }

.container { max-width: var(--w); margin: 0 auto; padding: 0 var(--gutter); }

/* anchors land clear of the sticky nav */
[id] { scroll-margin-top: 88px; }

/* ---- typography ---------------------------------------------------------- */
h1, h2, h3 { font-family: var(--display); letter-spacing: var(--track-display); line-height: 1.08; text-wrap: balance; }
h1 { font-size: var(--t-h1); font-weight: 700; letter-spacing: -0.025em; line-height: 1.04; }
h2 { font-size: var(--t-h2); font-weight: 500; line-height: 1.15; }
h3 { font-size: var(--t-h3); font-weight: 500; }

.lede { font-size: clamp(1.1875rem, 1rem + 0.55vw, 1.375rem); color: var(--ink-dim); max-width: 34em; line-height: 1.55; }
.prose { color: var(--ink-dim); max-width: 66ch; }
.prose strong { color: var(--ink); font-weight: 500; }
.t-base { font-size: var(--t-base); }
.t-sm { font-size: var(--t-sm); }

.mono { font-family: var(--mono); letter-spacing: var(--track-mono); }
.tnum { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* the ONE mono-label component: 11px, tracked-up, uppercase */
.label {
  font-family: var(--mono); font-size: var(--t-micro); font-weight: 500;
  letter-spacing: var(--track-up); text-transform: uppercase; color: var(--ink-mist);
}
.eyebrow {
  font-family: var(--mono); font-size: var(--t-micro); font-weight: 500;
  letter-spacing: var(--track-up); text-transform: uppercase; color: var(--ink-mist);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ''; width: 4px; height: 4px; background: var(--signal); flex: none; }
.dim { color: var(--ink-dim); }
.mist { color: var(--ink-mist); }
.sig { color: var(--signal); }

/* ---- structure ----------------------------------------------------------- */
section { padding: var(--sect) 0; position: relative; }
.sect-sm { padding: var(--sect-sm) 0; }
.sect-lg { padding: var(--sect-lg) 0; }
.rule-top { border-top: 1px solid var(--hairline-struct); }

.section-head { display: flex; flex-direction: column; gap: 18px; margin-bottom: clamp(40px, 6vh, 72px); max-width: 46em; }

/* ---- nav ------------------------------------------------------------------ */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--void) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.nav-logo { display: flex; align-items: center; flex: none; }
.nav-logo img { height: 30px; width: auto; display: block; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links ul { display: contents; list-style: none; }
.nav-links a:not(.btn) { font-size: var(--t-base); color: var(--ink-dim); transition: color var(--t-fast) var(--ease); }
.nav-links a:not(.btn):hover { color: var(--ink); }
.nav-links a[aria-current="page"] { color: var(--ink); }
.nav-menu { display: none; position: relative; }
@media (max-width: 640px) {
  .nav-links ul { display: none; }
  .nav-logo img { height: 24px; }
  .nav-links { gap: 12px; }
  .nav-menu { display: block; }
  .nav-menu summary {
    list-style: none; cursor: pointer; font-family: var(--mono);
    font-size: var(--t-micro); letter-spacing: var(--track-up); text-transform: uppercase;
    color: var(--ink-dim); padding: 10px 4px;
  }
  .nav-menu summary::-webkit-details-marker { display: none; }
  .nav-menu[open] summary { color: var(--signal); }
  .nav-menu div {
    position: absolute; right: 0; top: calc(100% + 10px); z-index: 60;
    background: var(--void-panel); border: 1px solid var(--hairline-struct); border-radius: 4px;
    display: flex; flex-direction: column; min-width: 180px; padding: 6px 0;
  }
  .nav-menu div a { padding: 11px 18px; font-size: var(--t-base); color: var(--ink-dim); }
  .nav-menu div a:hover { color: var(--ink); background: var(--void-raised); }
}

/* ---- buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--mono); font-size: var(--t-sm); font-weight: 500; letter-spacing: var(--track-mono);
  padding: 0 22px; height: 46px; border-radius: 3px; cursor: pointer;
  border: 1px solid transparent; white-space: nowrap;
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.btn-sm { height: 38px; padding: 0 16px; }
.btn-primary { background: var(--signal); color: var(--signal-ink); }
.btn-primary:hover { background: var(--signal-hi); }
.btn-ghost { border-color: var(--hairline-struct); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--hairline-accent); }
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.btn-note { font-size: var(--t-sm); color: var(--ink-mist); }
.btn-note a { border-bottom: 1px solid var(--hairline-struct); }
.btn-note a:hover { border-color: var(--signal); }
.cta-band { text-align: center; max-width: 720px; margin: 0 auto; }
.cta-band .lede { margin-inline: auto; }
.cta-band .btn-row { justify-content: center; }
.cta-band .eyebrow { justify-content: center; }

/* ---- hero ------------------------------------------------------------------ */
.hero { padding: clamp(72px, 12vh, 140px) 0 var(--sect); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 11fr) minmax(0, 9fr); gap: clamp(40px, 6vw, 88px); align-items: start; }
@media (max-width: 960px) { .hero-grid { grid-template-columns: 1fr; } }
.hero-copy { display: flex; flex-direction: column; gap: 28px; padding-top: clamp(0px, 2vw, 24px); }
.hero h1 .sig { display: block; }
@media (max-width: 520px) { .hero h1 .sig { display: inline; } }

/* ---- terminal chip --------------------------------------------------------- */
.term {
  background: var(--void-inset);
  border: 1px solid var(--hairline-struct);
  border-radius: 4px;
  font-family: var(--mono); font-size: var(--t-sm); line-height: 1.75;
  overflow: hidden;
}
.term-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 14px; border-bottom: 1px solid var(--hairline);
  color: var(--ink-mist); font-family: var(--mono); font-size: var(--t-micro); letter-spacing: var(--track-up); text-transform: lowercase;
}
.term-bar .pip { display: inline-flex; align-items: center; gap: 8px; color: var(--signal-dim); }
.term-bar .pip::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--signal-dim); }
.term-body { padding: 18px 18px 22px; }
.hero .term-body { min-height: 19.5em; }
.term-body .ln { display: block; white-space: pre-wrap; word-break: break-word; }
.term-body .ps1 { color: var(--signal); }
.term-body .cmd { color: var(--ink); }
.term-body .out { color: var(--ink-mist); }
.term-body .ok { color: var(--signal-dim); }
.caret { display: inline-block; width: 7px; height: 1.05em; background: var(--signal); vertical-align: text-bottom; animation: caret 1.1s steps(1) infinite; }
@keyframes caret { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .caret { animation: none; } }

/* ---- proof strip ------------------------------------------------------------ */
.proof { border-top: 1px solid var(--hairline-struct); border-bottom: 1px solid var(--hairline-struct); padding: 26px 0; }
.proof-row { display: flex; flex-wrap: wrap; gap: 14px 40px; font-family: var(--mono); font-size: var(--t-sm); color: var(--ink-mist); letter-spacing: var(--track-mono); }
.proof-row span { display: inline-flex; align-items: center; gap: 9px; }
.proof-row span::before { content: ''; width: 4px; height: 4px; background: var(--signal-dim); flex: none; }
.proof-note { margin-top: 16px; font-size: var(--t-sm); color: var(--ink-mist); }
.proof-note a { border-bottom: 1px solid var(--hairline-struct); }

/* ---- cards ------------------------------------------------------------------ */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hairline-struct); border: 1px solid var(--hairline-struct); }
@media (max-width: 860px) { .cards-3 { grid-template-columns: 1fr; } }
.card { background: var(--void); padding: 30px 28px 34px; display: flex; flex-direction: column; gap: 12px; }
.card .k { font-family: var(--mono); font-size: var(--t-micro); letter-spacing: var(--track-up); text-transform: uppercase; color: var(--signal-dim); }
.card h3 { font-size: var(--t-h3); }
.card p { font-size: var(--t-base); color: var(--ink-dim); }

/* ---- ledger ------------------------------------------------------------------ */
.ledger { columns: 2; column-gap: 60px; border-top: 1px solid var(--hairline-struct); }
@media (max-width: 760px) { .ledger { columns: 1; } }
.ledger div {
  break-inside: avoid; display: flex; justify-content: space-between; gap: 20px;
  padding: 11px 2px; border-bottom: 1px solid var(--hairline-struct);
  font-size: var(--t-base);
}
.ledger div b { font-weight: 500; color: var(--ink); }
.ledger div span { font-family: var(--mono); font-size: var(--t-micro); letter-spacing: var(--track-mono); color: var(--ink-mist); text-align: right; flex: none; align-self: center; }

/* ---- diagram ------------------------------------------------------------------ */
.diagram-wrap { border: 1px solid var(--hairline-struct); background: var(--void-inset); border-radius: 4px; padding: clamp(18px, 3vw, 40px); }
.diagram-wrap svg { width: 100%; height: auto; }
.diagram-wrap .dg-desktop { display: block; }
.diagram-wrap .dg-mobile { display: none; }
@media (max-width: 720px) {
  .diagram-wrap .dg-desktop { display: none; }
  .diagram-wrap .dg-mobile { display: block; }
}
.diagram-caption { display: flex; justify-content: space-between; gap: 20px; margin-top: 14px; font-size: var(--t-sm); color: var(--ink-mist); flex-wrap: wrap; }

/* ---- pricing table -------------------------------------------------------------- */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-note { font-size: var(--t-sm); color: var(--ink-mist); max-width: 62ch; margin-bottom: 14px; }
.price-table { width: 100%; border-collapse: collapse; font-size: var(--t-base); min-width: 560px; }
.price-table th, .price-table td { border: 1px solid var(--hairline-struct); padding: 13px 16px; text-align: right; }
.price-table th { font-family: var(--mono); font-size: var(--t-micro); font-weight: 500; letter-spacing: var(--track-up); text-transform: uppercase; color: var(--ink-mist); }
.price-table td { font-family: var(--mono); font-variant-numeric: tabular-nums; letter-spacing: var(--track-mono); color: var(--ink-dim); }
.price-table td:first-child, .price-table th:first-child { text-align: left; }
.price-table td:first-child { color: var(--ink); }
.price-table tbody th { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: var(--t-base); letter-spacing: var(--track-mono); text-transform: none; color: var(--ink); font-weight: 500; }
.price-table .hi td, .price-table .hi th { background: var(--void-raised); color: var(--ink); }
.price-table .free { color: var(--signal); }
@media (max-width: 560px) { .price-table th, .price-table td { padding: 11px 10px; } }

.tier-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hairline-struct); border: 1px solid var(--hairline-struct); margin: 40px 0; }
@media (max-width: 860px) { .tier-cards { grid-template-columns: 1fr; } }
.tier { background: var(--void); padding: 30px 28px; display: grid; grid-template-rows: auto auto 1fr; gap: 14px; }
.tier .name { font-family: var(--mono); font-size: var(--t-micro); letter-spacing: var(--track-up); text-transform: uppercase; color: var(--ink-mist); font-weight: 500; }
.tier .price { font-family: var(--display); font-size: 1.9rem; font-weight: 700; letter-spacing: var(--track-display); }
.tier .price small { font-family: var(--mono); font-size: var(--t-micro); font-weight: 400; color: var(--ink-mist); letter-spacing: var(--track-mono); display: block; margin-top: 6px; min-height: 2.6em; }
.tier ul { list-style: none; display: flex; flex-direction: column; gap: 9px; font-size: var(--t-base); color: var(--ink-dim); align-self: start; }
.tier ul li { padding-left: 16px; position: relative; }
.tier ul li::before { content: ''; position: absolute; left: 0; top: 0.58em; width: 4px; height: 4px; background: var(--signal-dim); }
.tier.hi { background: var(--void-raised); border-top: 1px solid var(--hairline-accent); }

.guarantees { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hairline-struct); border: 1px solid var(--hairline-struct); }
@media (max-width: 860px) { .guarantees { grid-template-columns: 1fr; } }
.guarantee { background: var(--void); padding: 26px 26px 30px; }
.guarantee .g-n { font-family: var(--mono); font-size: var(--t-micro); color: var(--signal-dim); letter-spacing: var(--track-up); text-transform: uppercase; }
.guarantee h3 { margin: 10px 0 8px; font-size: var(--t-h3); }
.guarantee p { font-size: var(--t-base); color: var(--ink-mist); }

/* ---- honest block / trust -------------------------------------------------------- */
.honest { border-left: 1px solid var(--signal-deep); padding: 6px 0 6px 28px; max-width: 62ch; }
.honest p { color: var(--ink-dim); }
.honest p + p { margin-top: 14px; }

.not-for { list-style: none; border-top: 1px solid var(--hairline-struct); max-width: 62ch; }
.not-for li { padding: 13px 0 13px 30px; border-bottom: 1px solid var(--hairline-struct); color: var(--ink-dim); position: relative; font-size: var(--t-base); }
.not-for li::before { content: ''; position: absolute; left: 2px; top: 1.32em; width: 6px; height: 1px; background: var(--ink-mist); }

/* ---- SIP ladder rail --------------------------------------------------------------- */
.ladder { position: fixed; left: 22px; top: 50%; transform: translateY(-50%); z-index: 40; display: none; }
@media (min-width: 1280px) { .ladder { display: block; } }
.ladder ol { list-style: none; display: flex; flex-direction: column; gap: 22px; position: relative; }
.ladder ol::before { content: ''; position: absolute; left: 3px; top: 8px; bottom: 8px; width: 1px; background: var(--hairline); }
.ladder li { font-family: var(--mono); font-size: var(--t-micro); letter-spacing: var(--track-mono); color: var(--ink-low); padding-left: 16px; position: relative; transition: color var(--t-mid) var(--ease); }
.ladder li::before { content: ''; position: absolute; left: 0; top: 50%; margin-top: -3.5px; width: 7px; height: 7px; border-radius: 50%; background: var(--void); border: 1px solid var(--ink-low); transition: border-color var(--t-mid) var(--ease), background var(--t-mid) var(--ease); }
.ladder li.on { color: var(--signal); }
.ladder li.on::before { border-color: var(--signal); background: var(--signal-deep); }
.ladder li.done { color: var(--ink-mist); }
.ladder li.done::before { border-color: var(--ink-mist); }

/* ---- reveal: enhancement only — no-JS renders everything ---------------------------- */
.rv { opacity: 1; transform: none; }
.js .rv { opacity: 0; transform: translateY(14px); transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease); transition-delay: calc(var(--i, 0) * 60ms); }
.js .rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .rv { opacity: 1; transform: none; transition: none; } }

/* ---- footer ------------------------------------------------------------------------- */
footer { border-top: 1px solid var(--hairline-struct); padding: 56px 0 72px; margin-top: var(--sect); }
.foot-grid { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.foot-brand { display: flex; flex-direction: column; gap: 16px; max-width: 320px; }
.foot-brand p { font-size: var(--t-sm); color: var(--ink-mist); }
.foot-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.foot-cols div { display: flex; flex-direction: column; gap: 10px; font-size: var(--t-base); }
.foot-cols b { font-family: var(--mono); font-size: var(--t-micro); letter-spacing: var(--track-up); text-transform: uppercase; color: var(--ink-mist); font-weight: 500; margin-bottom: 4px; }
.foot-cols a { color: var(--ink-dim); }
.foot-cols a:hover { color: var(--ink); }
.foot-meta { margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--hairline); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-family: var(--mono); font-size: var(--t-micro); letter-spacing: var(--track-mono); color: var(--ink-mist); text-transform: lowercase; }

/* ---- page hero (subpages) ------------------------------------------------------------ */
.page-hero { padding: clamp(64px, 10vh, 110px) 0 12px; }
.page-hero .lede { margin-top: 22px; }

/* ---- utility -------------------------------------------------------------------------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: start; }
@media (max-width: 860px) { .grid-2 { grid-template-columns: 1fr; } }
.mt-l { margin-top: clamp(40px, 6vh, 72px); }
.mt-m { margin-top: 28px; }
.page-center { min-height: 70vh; display: flex; align-items: center; }
.page-center > div { max-width: 560px; width: 100%; }

/* ---- diagram inner styles (inline SVG inherits these tokens) -------------------------- */
.dg-t { font: 500 12px var(--mono); fill: var(--ink-mist); letter-spacing: 0.04em; }
.dg-n { font: 500 13px var(--mono); fill: var(--ink-dim); }
.dg-n-y { font: 500 13px var(--mono); fill: var(--ink); }
.dg-s { font: 500 11px var(--mono); fill: var(--ink-mist); }
.dg-s-y { font: 500 11px var(--mono); fill: var(--signal-dim); }
.dg-box { fill: var(--void-panel); stroke: var(--hairline-struct); }
.dg-box-y { fill: var(--void-signal); stroke: var(--signal-deep); }
.dg-path { stroke: var(--ink-mist); stroke-width: 1.2; fill: none; }
.dg-path-y { stroke: var(--signal); stroke-width: 1.4; fill: none; }
.dg-bnd { stroke: var(--ink-low); stroke-width: 1; stroke-dasharray: 5 4; fill: none; }
.dg-per { stroke: var(--signal); stroke-width: 1.2; fill: rgba(125,255,193,0.03); }
.dg-badge { font: 700 13px var(--mono); fill: var(--ink-dim); }
.dg-badge-y { font: 700 13px var(--mono); fill: var(--signal); }

/* ---- responsive nav CTA label ---------------------------------------------------------- */
.cta-short { display: none; }
@media (max-width: 480px) {
  .cta-long { display: none; }
  .cta-short { display: inline; }
  .nav-logo img { height: 20px; }
  .nav-links { gap: 10px; }
}

/* ---- micro-utilities (kill inline styles) ---------------------------------------------- */
.mb-0 { margin-bottom: 0; }
.u-line { border-bottom: 1px solid var(--hairline-struct); }

/* ---- AI engineer chat sim --------------------------------------------------------------- */
.chat-tabs { display: flex; gap: 1px; background: var(--hairline-struct); border: 1px solid var(--hairline-struct); border-radius: 3px; overflow: hidden; margin-bottom: 28px; width: fit-content; max-width: 100%; }
.chat-tabs button {
  font-family: var(--mono); font-size: var(--t-micro); font-weight: 500; letter-spacing: var(--track-up); text-transform: uppercase;
  padding: 12px 20px; background: var(--void); color: var(--ink-mist); border: 0; cursor: pointer;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.chat-tabs button:hover { color: var(--ink); }
.chat-tabs button[aria-pressed="true"] { background: var(--void-raised); color: var(--signal); }

.chat {
  background: var(--void-inset); border: 1px solid var(--hairline-struct); border-radius: 4px;
  padding: 26px clamp(18px, 3vw, 34px) 30px; max-width: 760px;
}
.chat-script { display: flex; flex-direction: column; gap: 14px; }
/* no-JS: all three scripts stack with their persona labels; JS shows one at a time */
.js .chat-script { display: none; }
.js .chat-script.active { display: flex; }
.chat-script > .label { margin-bottom: 4px; }
.js .chat-script > .label { display: none; }

.chat-msg { max-width: 46em; font-size: var(--t-base); line-height: 1.55; padding: 12px 16px; border-radius: 4px; }
.chat-msg.user { align-self: flex-end; background: var(--void-panel); border: 1px solid var(--hairline); color: var(--ink); }
.chat-msg.agent { align-self: flex-start; background: transparent; border: 1px solid var(--hairline); border-left: 2px solid var(--signal-deep); color: var(--ink-dim); }
.chat-msg.agent::before { content: 'engineer'; display: block; font-family: var(--mono); font-size: var(--t-micro); letter-spacing: var(--track-up); text-transform: uppercase; color: var(--signal-dim); margin-bottom: 6px; }
.chat-msg .chip { display: inline-block; font-family: var(--mono); font-size: var(--t-micro); letter-spacing: var(--track-mono); color: var(--signal-dim); border: 1px solid var(--signal-deep); border-radius: 3px; padding: 2px 8px; margin-top: 8px; }

.js .chat-msg { opacity: 0; transform: translateY(8px); transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease); }
.js .chat-msg.shown { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .chat-msg { opacity: 1; transform: none; transition: none; } }

.chat-caption { margin-top: 14px; font-family: var(--mono); font-size: var(--t-micro); letter-spacing: var(--track-mono); color: var(--ink-mist); text-transform: lowercase; }