/*
  CostBleed marketing site — hand-written CSS, no build step.
  System font stacks only. No external fonts, no CDN, no third-party assets.
  Palette: docs/UI_UX_SPEC.md. Crimson is an accent, never a flood.

  Design language: an annotated forensic document set. Engraved didone
  display type (Didot / Bodoni MT via the system, Georgia as the floor),
  hairline rules, one light "paper" artifact (the ProofPack ledger), and
  the crimson thread as an engineered connector — one seam, not a wound.
*/

:root {
  --obsidian: #09090b;
  --charcoal: #151519;
  --graphite: #25262c;
  --garnet: #74121c;
  --crimson: #a31528;
  /*
    Accessibility: raw --crimson on --obsidian/--charcoal measures
    2.55:1 / 2.34:1, below the WCAG AA 4.5:1 text minimum required by
    docs/UI_UX_SPEC.md. --crimson-tint is a lightened step toward --bone
    (5.35:1 on obsidian, 4.90:1 on charcoal) and is what crimson must be
    when it is *text* on a dark surface. Raw --crimson stays for fills,
    rules and borders, and is AA (6.63:1) as text on --bone paper.
    Mirrors --crimson-tint in apps/web/static/costbleed.css.
  */
  --crimson-tint: #c26b74;
  --dark-ruby: #530b13;
  --bone: #f1ece5;
  --cold-stone: #bdb8b1;
  --amber: #c28a32;
  --muted-green: #768675;

  --font-display: Didot, "Bodoni MT", Georgia, "Times New Roman", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Cascadia Mono", Consolas, "SF Mono", Menlo, monospace;

  --rule: rgba(241, 236, 229, 0.13);
  --rule-strong: rgba(241, 236, 229, 0.24);
  --paper-rule: #d9d2c7;
  --ink-muted: #55524c;
  /* Crimson as INK, exclusively for text sitting on the bone paper card —
     6.63:1 there (AA). Never use it as text on a dark surface; that is what
     --crimson-tint is for. */
  --paper-accent-ink: #a31528;
  --max-width: 1180px;

  --ease-out: cubic-bezier(0.2, 0, 0, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--obsidian);
  color: var(--bone);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--bone);
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.4rem, 4.6vw, 3.6rem);
  letter-spacing: 0.002em;
  line-height: 1.06;
}

h2 {
  font-size: clamp(1.55rem, 2.5vw, 2.15rem);
  letter-spacing: 0.004em;
}

h3 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 1em;
  text-wrap: pretty;
}

a {
  color: var(--bone);
  text-decoration-color: var(--crimson);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover,
a:focus-visible {
  text-decoration-color: var(--amber);
}

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

ul,
ol {
  margin: 0 0 1em;
  padding-left: 1.25em;
}

/* ---- utility ------------------------------------------------------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--crimson);
  color: var(--bone);
  padding: 0.75em 1.25em;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cold-stone);
  margin: 0 0 1.4em;
}

.text-link {
  display: inline-block;
  margin-top: 0.5em;
  font-weight: 600;
}

.plain-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1em;
}

.plain-list li {
  padding: 0.55em 0;
  border-bottom: 1px solid var(--rule);
}

.plain-list li:first-child {
  border-top: 1px solid var(--rule);
}

.tabular-nums {
  font-variant-numeric: tabular-nums lining-nums;
}

/* ---- header ---------------------------------------------------------- */

.site-header {
  border-bottom: 1px solid var(--rule);
  background: color-mix(in srgb, var(--obsidian) 88%, transparent);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.15rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.wordmark {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  line-height: 1.1;
}

.wordmark__mark {
  font-family: var(--font-display);
  font-size: 1.45rem;
  letter-spacing: 0.03em;
  color: var(--bone);
}

.wordmark__mark--small {
  font-size: 1.1rem;
}

.wordmark__tagline {
  font-size: 0.64rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cold-stone);
  margin-top: 0.35em;
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--cold-stone);
  border-bottom: 1px solid transparent;
  padding-bottom: 0.2em;
  transition: color 150ms var(--ease-out), border-color 150ms var(--ease-out);
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
  color: var(--bone);
  border-bottom-color: var(--crimson);
}

.site-nav__cta a {
  color: var(--bone);
  background: var(--crimson);
  padding: 0.55em 1.05em;
  border-radius: 2px;
  border-bottom: none;
}

.site-nav__cta a:hover,
.site-nav__cta a:focus-visible {
  background: var(--garnet);
  color: var(--bone);
}

/* ---- hero -------------------------------------------------------------- */

.hero {
  position: relative;
  border-bottom: 1px solid var(--rule);
  background:
    linear-gradient(180deg, rgba(9, 9, 11, 0) 40%, var(--obsidian) 96%),
    radial-gradient(ellipse 56% 44% at 74% 34%, rgba(116, 18, 28, 0.16), transparent 72%),
    repeating-linear-gradient(to bottom, transparent 0 43px, rgba(241, 236, 229, 0.05) 43px 44px);
}

.hero--page {
  padding: 4.25rem 1.5rem 3rem;
}

.hero--page > .hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero--page h1 {
  max-width: 17em;
}

.hero--page .hero__support {
  max-width: 42rem;
}

.hero--home {
  padding: 0;
}

.hero__grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4.25rem 1.5rem 3.25rem;
  display: grid;
  grid-template-columns: minmax(0, 34rem) minmax(0, 1fr);
  gap: 2.5rem 3rem;
  align-items: center;
}

.hero--home .hero__title {
  font-size: clamp(2.9rem, 5.4vw, 4.5rem);
}

.hero__inner {
  max-width: 44rem;
}

.hero__title {
  margin-bottom: 0.4em;
}

.hero__support {
  font-size: 1.13rem;
  color: var(--cold-stone);
  max-width: 36rem;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.9rem;
}

.hero__facts {
  list-style: none;
  margin: 2.75rem 0 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.hero__facts li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.88rem;
  color: var(--cold-stone);
}

.hero__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.45rem;
  height: 1px;
  background: var(--crimson);
}

/* ---- hero scene: the exploded evidence stack --------------------------- */

.hero__scene {
  margin: 0;
  min-width: 0;
}

.evi {
  display: block;
  width: min(100%, 46rem);
  height: auto;
  margin-left: auto;
}

.evi__face {
  fill: #17171c;
  stroke: #2c2d33;
  stroke-width: 1;
}

.evi__edge {
  fill: #060607;
  stroke: #232429;
  stroke-width: 1;
}

.evi__sheet--1 .evi__face {
  fill: #1b1c22;
  stroke: #383941;
}

.evi__sheet--2 .evi__face {
  fill: #17181d;
}

.evi__sheet--3 .evi__face {
  fill: #131317;
}

.evi__row {
  stroke: rgba(189, 184, 177, 0.22);
  stroke-width: 1;
}

.evi__sheet--2 .evi__row,
.evi__sheet--3 .evi__row {
  stroke: rgba(189, 184, 177, 0.12);
}

.evi__tick {
  stroke: rgba(189, 184, 177, 0.48);
  stroke-width: 2;
}

.evi__ghost {
  fill: none;
  stroke: var(--crimson);
  stroke-width: 1;
  stroke-dasharray: 3 4;
  opacity: 0.4;
}

.evi__slab-shadow {
  fill: rgba(0, 0, 0, 0.55);
  transform: translate(6px, 9px);
}

.evi__slab-face {
  fill: #25262c;
  stroke: var(--crimson);
  stroke-width: 1.25;
}

.evi__slab-rule {
  stroke: rgba(241, 236, 229, 0.3);
  stroke-width: 1;
}

.evi__slab-tick {
  stroke: #d68b93;
  stroke-width: 3;
}

.evi__slab {
  transform: translate(34px, 17px);
}

.evi__thread-under {
  stroke: var(--crimson);
  stroke-width: 1.75;
  opacity: 0.45;
}

.evi__thread {
  stroke: var(--crimson);
  stroke-width: 1.75;
}

.evi__ring {
  fill: var(--obsidian);
  stroke: var(--crimson);
  stroke-width: 1.5;
}

.evi__seam {
  fill: var(--crimson);
}

.evi__terminal {
  fill: var(--crimson);
  stroke: rgba(163, 21, 40, 0.35);
  stroke-width: 6;
}

.evi__doc-label,
.evi__callout-kicker {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  fill: #8b8781;
}

.evi__doc-label {
  font-size: 9.5px;
  letter-spacing: 0.08em;
}

.evi__callout-title {
  font-family: var(--font-display);
  font-size: 17px;
  fill: var(--bone);
}

.evi__callout-amount {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  fill: var(--crimson-tint);
}

.evi__callout-figure {
  font-family: var(--font-display);
  font-size: 31px;
  fill: var(--bone);
}

.evi__leader {
  stroke: rgba(194, 107, 116, 0.55);
  stroke-width: 1;
}

/* Entrance: the thread traces over its own faint underlay, the line slides
   out of register, the callouts settle. Nothing is ever invisible — every
   animated element starts at a legible state, so the composition is whole
   at first paint (and in any renderer that never runs the animation). All
   motion lives behind the reduced-motion gate. */
@media (prefers-reduced-motion: no-preference) {
  .evi__thread {
    stroke-dasharray: 920;
    stroke-dashoffset: 920;
    animation: evi-thread 800ms var(--ease-out) 100ms forwards;
  }

  .evi__slab-wrap {
    animation: evi-slide 550ms var(--ease-out) 300ms backwards;
  }

  .evi__ring,
  .evi__seam,
  .evi__terminal {
    animation: evi-settle 400ms var(--ease-out) 550ms backwards;
  }

  .evi__callout--finding {
    animation: evi-callout 450ms var(--ease-out) 620ms backwards;
  }

  .evi__callout--hold {
    animation: evi-callout 450ms var(--ease-out) 760ms backwards;
  }
}

@keyframes evi-thread {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes evi-slide {
  from {
    transform: translate(-11px, -5.5px);
  }
  to {
    transform: translate(0, 0);
  }
}

@keyframes evi-settle {
  from {
    opacity: 0.5;
  }
  to {
    opacity: 1;
  }
}

@keyframes evi-callout {
  from {
    opacity: 0.65;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- motion: subtle lift + reduced-motion ------------------------------- */

.card-lift {
  transition: transform 180ms var(--ease-out), box-shadow 180ms var(--ease-out), border-color 180ms var(--ease-out);
}

.card-lift:hover,
.card-lift:focus-within {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -20px rgba(0, 0, 0, 0.7);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-delay: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---- buttons ------------------------------------------------------- */

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: 0.012em;
  text-decoration: none;
  padding: 0.85em 1.5em;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 150ms var(--ease-out), border-color 150ms var(--ease-out), color 150ms var(--ease-out);
}

.btn--primary {
  background: var(--crimson);
  color: var(--bone);
  border-color: color-mix(in srgb, var(--crimson) 80%, var(--bone));
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--garnet);
  border-color: var(--garnet);
}

.btn--primary:active {
  background: var(--dark-ruby);
  border-color: var(--dark-ruby);
}

.btn--secondary {
  background: transparent;
  color: var(--bone);
  border-color: var(--rule-strong);
}

.btn--secondary:hover,
.btn--secondary:focus-visible {
  border-color: var(--bone);
}

/* ---- sections -------------------------------------------------------- */

.section {
  padding: clamp(3.25rem, 6vw, 4.75rem) 1.5rem;
}

.section--rule {
  border-top: 1px solid var(--rule);
}

.section--dark {
  background: var(--charcoal);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.section--closing {
  border-top: 1px solid var(--rule);
  background: linear-gradient(180deg, var(--charcoal), var(--obsidian) 70%);
  text-align: center;
}

.section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section__inner--narrow {
  max-width: 40rem;
}

.section__inner--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem 5rem;
}

.section__inner--duo {
  display: grid;
  grid-template-columns: minmax(0, 15rem) minmax(0, 1fr);
  gap: 2rem 4.5rem;
  align-items: start;
}

.section__inner--centered {
  max-width: 44rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section__prose {
  border-left: 1px solid var(--rule);
  padding-left: clamp(1.5rem, 3vw, 3rem);
  max-width: 46rem;
}

.section__prose p:last-child {
  margin-bottom: 0;
  color: var(--cold-stone);
}

.section__head {
  max-width: 46rem;
  margin-bottom: clamp(1.75rem, 3.5vw, 2.75rem);
}

.section__heading {
  max-width: 34rem;
}

.section__lede {
  font-size: 1.05rem;
  color: var(--cold-stone);
  max-width: 42rem;
}

.section__note {
  color: var(--cold-stone);
  font-size: 0.88rem;
}

.section--closing .section__heading,
.section--closing .section__lede {
  margin-left: auto;
  margin-right: auto;
}

.closing-mark {
  color: var(--cold-stone);
  margin-bottom: 1.25rem;
}

/* ---- the proof spread: paper ledger + outcome key ---------------------- */

.proof-spread {
  display: grid;
  grid-template-columns: minmax(0, 27rem) minmax(0, 1fr);
  gap: 2.5rem 4.5rem;
  align-items: start;
}

.proof-spread__aside {
  padding-top: 0.5rem;
}

/* The one light object on a dark page: the ProofPack itself, as paper. */
.ledger-card {
  position: relative;
  background: var(--bone);
  color: var(--obsidian);
  border: 1px solid var(--paper-rule);
  padding: 1.9rem 2.1rem 1.6rem;
  box-shadow:
    0 1px 0 rgba(241, 236, 229, 0.08),
    0 18px 44px -18px rgba(0, 0, 0, 0.85);
}

.ledger-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--crimson);
}

.ledger-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
}

.ledger-card__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--obsidian);
}

.ledger-card__tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.ledger-card__meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
  border-bottom: 1px solid var(--obsidian);
  padding-bottom: 0.8rem;
  margin: 0.1rem 0 0.35rem;
}

.ledger-table {
  width: 100%;
  border-collapse: collapse;
}

.ledger-table th,
.ledger-table td {
  padding: 0.62rem 0;
  border-bottom: 1px solid var(--paper-rule);
  font-weight: 400;
  text-align: left;
}

.ledger-table th {
  color: var(--ink-muted);
  font-size: 0.94rem;
}

.ledger-table td {
  text-align: right;
  color: var(--obsidian);
  font-family: var(--font-display);
  font-size: 1.18rem;
}

.ledger-table__row--bleed th {
  color: var(--garnet);
}

.ledger-table__row--bleed td {
  color: var(--garnet);
}

.ledger-table__row--hold th,
.ledger-table__row--hold td {
  border-bottom: none;
  border-top: 2px solid var(--crimson);
  padding-top: 0.85rem;
}

.ledger-table__row--hold th {
  color: var(--obsidian);
  font-weight: 600;
  font-size: 1rem;
}

.ledger-table__row--hold td {
  color: var(--paper-accent-ink); /* on bone paper: 6.63:1, AA */
  font-size: 1.7rem;
  letter-spacing: 0.01em;
}

.ledger-card__note {
  margin: 1.2rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--paper-rule);
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--ink-muted);
}

/* Outcome key: what each ledger row means. */
.outcome-list {
  margin: 0;
}

.outcome-list__item {
  display: grid;
  grid-template-columns: 1.1rem minmax(9.5rem, 12rem) 1fr;
  gap: 0 1.25rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}

.outcome-list__item:first-child {
  border-top: 1px solid var(--rule);
}

.outcome-list__item::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  align-self: start;
  margin-top: 0.45rem;
  background: var(--cold-stone);
}

.outcome-list__item[data-outcome="supported"]::before {
  background: var(--muted-green);
}

.outcome-list__item[data-outcome="clarify"]::before {
  background: var(--amber);
}

.outcome-list__item[data-outcome="bleed"]::before {
  background: var(--crimson);
}

.outcome-list__item dt {
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: var(--bone);
}

.outcome-list__item dd {
  margin: 0;
  font-size: 0.9rem;
  color: var(--cold-stone);
}

.proof-spread__aside .section__note {
  margin: 1.4rem 0 0;
}

/* ---- finding anatomy --------------------------------------------------- */

.anatomy-spread {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 44rem);
  gap: 2.5rem 4.5rem;
  align-items: center;
}

.anatomy-keys {
  list-style: none;
  margin: 1.75rem 0;
  padding: 0;
}

.anatomy-keys li {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 0 1rem;
  align-items: baseline;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--cold-stone);
}

.anatomy-keys li:first-child {
  border-top: 1px solid var(--rule);
}

.anatomy-keys__term {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bone);
}

/* ---- finding card (the single most persuasive thing on the page) ------- */

.finding-card {
  position: relative;
  background: var(--charcoal);
  border: 1px solid var(--rule-strong);
  padding: 1.85rem 2.1rem;
}

.finding-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--crimson) 0 32%, var(--rule-strong) 32%);
}

.finding-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1rem;
  margin-bottom: 1rem;
}

.finding-card__taxonomy {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--bone);
  margin: 0;
}

.finding-card__status {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--crimson-tint);
  margin: 0 0 0.45em;
}

.finding-card__amount {
  font-family: var(--font-display);
  font-size: 1.9rem;
  color: var(--bone);
  white-space: nowrap;
  margin: 0;
}

.finding-card__rationale {
  color: var(--cold-stone);
  margin-bottom: 1.1rem;
  max-width: 40rem;
}

.finding-card__sources {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.2rem;
  padding: 0;
  list-style: none;
}

.source-chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--cold-stone);
  border: 1px solid var(--rule-strong);
  padding: 0.4em 0.8em;
  border-radius: 2px;
  transition: border-color 150ms var(--ease-out), color 150ms var(--ease-out);
}

.finding-card:hover .source-chip {
  border-color: rgba(241, 236, 229, 0.35);
}

.finding-card__action {
  margin: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--bone);
}

.finding-card__action-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.45em;
}

/* ---- taxonomy grid ------------------------------------------------------ */

.taxonomy-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0 2.5rem;
}

.taxonomy-item {
  border-top: 1px solid var(--rule);
  padding: 1.15rem 0 1.35rem;
  transition: border-color 160ms var(--ease-out);
}

.taxonomy-item:hover {
  border-top-color: var(--crimson);
}

.taxonomy-item__glyph {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: var(--cold-stone);
  stroke-width: 1.5;
  stroke-linecap: butt;
  stroke-linejoin: miter;
  margin-bottom: 0.7rem;
  transition: stroke 160ms var(--ease-out);
}

.taxonomy-item:hover .taxonomy-item__glyph {
  stroke: var(--crimson-tint);
}

.taxonomy-item h3 {
  font-size: 1.02rem;
  margin-bottom: 0.3em;
}

.taxonomy-item p {
  color: var(--cold-stone);
  font-size: 0.86rem;
  line-height: 1.55;
  margin: 0;
}

/* ---- steps ------------------------------------------------------------ */

.mini-steps {
  list-style: none;
  padding: 0;
  counter-reset: mini-step;
}

.mini-steps li {
  counter-increment: mini-step;
  position: relative;
  padding: 0.55em 0 0.55em 2.5em;
  color: var(--cold-stone);
}

.mini-steps li::before {
  content: counter(mini-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.72em;
  color: var(--crimson-tint);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.mini-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 0.62em;
  top: 2em;
  bottom: -0.6em;
  width: 1px;
  background: linear-gradient(180deg, rgba(163, 21, 40, 0.55), rgba(163, 21, 40, 0.1));
}

.steps {
  list-style: none;
  padding: 0;
  counter-reset: step;
  max-width: 42rem;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding: 0 0 2rem 3.25rem;
  margin-left: 0.9rem;
}

.steps li::after {
  content: "";
  position: absolute;
  left: 0;
  top: 1.9rem;
  bottom: 0.2rem;
  width: 1px;
  background: linear-gradient(180deg, rgba(163, 21, 40, 0.5), rgba(163, 21, 40, 0.12));
}

.steps li:last-child::after {
  content: none;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: -0.9rem;
  top: -0.1rem;
  width: 1.8rem;
  height: 1.8rem;
  border: 1px solid var(--crimson);
  border-radius: 50%;
  color: var(--bone);
  font-family: var(--font-display);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--obsidian);
}

.steps h2 {
  font-size: 1.15rem;
  margin-bottom: 0.3em;
}

.steps p {
  color: var(--cold-stone);
  margin-bottom: 0;
}

/* ---- persona grid ------------------------------------------------------ */

.persona-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem 2.5rem;
}

.persona-card {
  border-top: 1px solid var(--rule);
  padding: 1.15rem 0 0.5rem;
  transition: border-color 160ms var(--ease-out);
}

.persona-card:hover {
  border-top-color: var(--crimson);
}

.persona-card p {
  color: var(--cold-stone);
  margin-bottom: 0;
}

/* ---- band -------------------------------------------------------------- */

.section--band {
  border-top: 1px solid var(--rule);
}

.band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem 4rem;
  align-items: end;
}

.band .section__heading {
  max-width: 30rem;
}

.band .section__lede {
  margin-bottom: 0;
}

.band .text-link {
  white-space: nowrap;
  padding-bottom: 0.2rem;
}

/* ---- ladder: three tiers as ruled rows --------------------------------- */

.ladder {
  display: flex;
  flex-direction: column;
  margin: 0 0 2rem;
  border-top: 1px solid var(--rule-strong);
}

.ladder__tier {
  display: grid;
  grid-template-columns: 9.5rem minmax(0, 1fr) auto;
  gap: 0 3rem;
  align-items: center;
  padding: 1.6rem 0.25rem;
  border-bottom: 1px solid var(--rule);
}

.ladder__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cold-stone);
  margin: 0;
}

.ladder__tier--first .ladder__eyebrow {
  color: var(--crimson-tint);
}

.ladder__body h3 {
  font-size: 1.35rem;
  margin-bottom: 0.25em;
}

.ladder__body p {
  color: var(--cold-stone);
  font-size: 0.94rem;
  max-width: 38rem;
  margin: 0;
}

.ladder__ordinal {
  font-family: var(--font-display);
  font-size: 2.3rem;
  line-height: 1;
  color: rgba(189, 184, 177, 0.38);
}

.ladder__tier--first .ladder__ordinal {
  color: var(--crimson-tint);
}

.ladder__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
}

.ladder__foot .section__note {
  margin: 0;
}

/* ---- definition / security / legal grids -------------------------------- */

.definition-grid,
.security-grid,
.legal-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem 4rem;
  margin: 2rem 0 0;
}

.legal-list {
  grid-template-columns: 1fr;
  max-width: 44rem;
}

.definition-grid dt,
.security-item h2,
.legal-item h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--bone);
  margin-bottom: 0.35em;
}

.definition-grid dd,
.security-item p,
.legal-item p {
  margin: 0;
  color: var(--cold-stone);
}

.definition-grid > div,
.security-item,
.legal-item {
  border-top: 1px solid var(--rule);
  padding-top: 1.1rem;
}

/* ---- form --------------------------------------------------------------- */

.form {
  margin-top: 1.5rem;
}

.field {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4em;
}

.field label {
  font-size: 0.85rem;
  color: var(--cold-stone);
}

.field input[type="text"],
.field input[type="email"],
.field select,
.field textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--bone);
  background: var(--obsidian);
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  padding: 0.7em 0.85em;
  transition: border-color 150ms var(--ease-out);
}

.field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--cold-stone) 50%),
    linear-gradient(135deg, var(--cold-stone) 50%, transparent 50%);
  background-position:
    calc(100% - 20px) center,
    calc(100% - 15px) center;
  background-size: 5px 5px;
  background-repeat: no-repeat;
}

.field input:hover,
.field select:hover,
.field textarea:hover {
  border-color: rgba(241, 236, 229, 0.4);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid var(--amber);
  outline-offset: 1px;
}

.field--checkbox {
  flex-direction: row;
  align-items: flex-start;
  gap: 0.6em;
}

.field--checkbox input {
  margin-top: 0.3em;
}

.field--checkbox label {
  color: var(--cold-stone);
  font-size: 0.9rem;
}

.field--honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.field-error {
  color: var(--amber);
  font-size: 0.82rem;
  margin: 0;
}

.form-error {
  background: rgba(163, 21, 40, 0.14);
  border: 1px solid var(--crimson);
  color: var(--bone);
  padding: 0.9em 1.1em;
  border-radius: 2px;
  margin-bottom: 1.5rem;
}

/* ---- contact layout: a considered document, not a bare utility form ---- */

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 17rem) minmax(0, 32rem);
  gap: 3rem 4rem;
  align-items: start;
}

.contact-aside {
  border-top: 2px solid var(--crimson);
  padding-top: 1.25rem;
}

.contact-aside__heading {
  font-size: 1.05rem;
  margin-bottom: 0.85em;
}

.contact-aside__steps {
  list-style: none;
  counter-reset: contact-step;
  padding: 0;
  margin: 0 0 1.4rem;
}

.contact-aside__steps li {
  counter-increment: contact-step;
  position: relative;
  padding: 0 0 1.1rem 2.1rem;
  color: var(--cold-stone);
  font-size: 0.92rem;
}

.contact-aside__steps li::before {
  content: counter(contact-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  color: var(--crimson-tint);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.contact-aside__steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 0.58em;
  top: 1.45em;
  bottom: 0.15em;
  width: 1px;
  background: linear-gradient(180deg, rgba(163, 21, 40, 0.45), rgba(163, 21, 40, 0.08));
}

.contact-aside__note {
  font-size: 0.85rem;
  color: var(--cold-stone);
  margin: 0;
}

.contact-form-card {
  background: var(--charcoal);
  border: 1px solid var(--rule-strong);
  border-top: 2px solid var(--crimson);
  padding: 2rem 2.25rem 2.25rem;
}

.contact-form-card .form {
  margin-top: 0;
}

@media (max-width: 860px) {
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ---- footer -------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 2.75rem 1.5rem 2.25rem;
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 3rem;
  align-items: flex-start;
  justify-content: space-between;
}

.site-footer__brand p {
  color: var(--cold-stone);
  font-size: 0.85rem;
  margin: 0.5em 0 0;
}

.site-footer__nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.site-footer__nav a {
  color: var(--cold-stone);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 150ms var(--ease-out);
}

.site-footer__nav a:hover,
.site-footer__nav a:focus-visible {
  color: var(--bone);
}

.site-footer__legal {
  width: 100%;
  color: var(--cold-stone);
  font-size: 0.78rem;
  margin: 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

/* ---- responsive ----------------------------------------------------------- */

@media (max-width: 1040px) {
  .hero__grid {
    grid-template-columns: 1fr;
    padding-top: 3.5rem;
  }

  .evi {
    margin: 0 auto;
    width: min(100%, 36rem);
  }

  .proof-spread,
  .anatomy-spread {
    grid-template-columns: 1fr;
  }

  .anatomy-spread .finding-card {
    max-width: 44rem;
  }

  .taxonomy-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0 2rem;
  }
}

@media (max-width: 860px) {
  .persona-grid {
    grid-template-columns: 1fr 1fr;
  }

  .taxonomy-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .definition-grid,
  .security-grid {
    grid-template-columns: 1fr;
  }

  .section__inner--split,
  .section__inner--duo {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .section__prose {
    border-left: none;
    padding-left: 0;
  }

  .band {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .ladder__tier {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.35rem 2rem;
  }

  .ladder__eyebrow {
    grid-column: 1 / -1;
  }
}

@media (max-width: 560px) {
  .persona-grid,
  .taxonomy-grid {
    grid-template-columns: 1fr;
  }

  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .ladder__ordinal {
    display: none;
  }

  .ledger-card {
    padding: 1.5rem 1.25rem 1.25rem;
  }

  .finding-card {
    padding: 1.5rem 1.25rem;
  }
}

/* Brand mark, inline beside the wordmark. */
.brand-mark {
  display: inline-block;
  vertical-align: -0.2em;
  margin-right: 0.5rem;
}

/* Attribution: quiet, never louder than the product name. */
.site-footer__by {
  margin-top: 0.35rem;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--cold-stone);
}

.site-footer__by strong {
  color: var(--bone);
  font-weight: 600;
}

/* Client sign-in: a bordered key, distinct from the crimson enquiry CTA
   so an existing client and a new prospect never reach for the same thing. */
.site-nav__signin > a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--graphite);
  border-radius: 2px;
  color: var(--cold-stone);
  transition: border-color 150ms var(--ease-out), color 150ms var(--ease-out);
}

.site-nav__signin > a:hover,
.site-nav__signin > a:focus-visible {
  border-color: var(--cold-stone);
  color: var(--bone);
}

/* Language switch: quiet mono pair, the active language inked in. */
.site-nav__lang {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: rgba(189, 184, 177, 0.45);
}

.site-nav__lang a {
  color: var(--cold-stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 0.15em;
  transition: color 150ms var(--ease-out), border-color 150ms var(--ease-out);
}

.site-nav__lang a:hover,
.site-nav__lang a:focus-visible {
  color: var(--bone);
}

.site-nav__lang a.is-active {
  color: var(--bone);
  border-bottom-color: var(--crimson);
}