@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-400-latin.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-500-latin.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-600-latin.woff2") format("woff2");
}

@font-face {
  font-family: "Libre Caslon Display";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/libre-caslon-display-400-latin.woff2") format("woff2");
}

@font-face {
  font-family: "Newsreader";
  font-style: normal;
  font-weight: 300 600;
  font-display: swap;
  src: url("fonts/newsreader-variable-latin.woff2") format("woff2");
}

@font-face {
  font-family: "Newsreader";
  font-style: italic;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/newsreader-italic-500-latin.woff2") format("woff2");
}

:root {
  --ink: #201a13;
  --ivory: #f3edde;
  --oxblood: #4e1518;
  --surface: #fbf8f0;
  --sand: #e5d9c4;
  --border: #d6c8af;
  --muted: #65594a;
  --brass: #a67c3d;
  --olive: #6a6b48;
  --success: #4f6444;
  --pass-on-dark: #c8d1a8;
  --error: #8f2e2e;
  --focus: #8a4d36;
  --focus-on-dark: #f3edde;
  --print-ink: #000;
  --print-paper: #fff;
  --display: "Libre Caslon Display", Georgia, serif;
  --body: "Newsreader", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --type-label: 0.8125rem;
  --type-micro: 0.6875rem;
  --type-body-small: 0.875rem;
  --container: 77.5rem;
  --reading: 70ch;
  --section: clamp(4.5rem, 9vw, 7rem);
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --ring: 0 0 0 1px rgb(32 26 19 / 18%);
  --lift: 0 6px 8px rgb(32 26 19 / 8%);
  --z-header: 30;
  --z-menu: 40;
  --z-dialog: 60;
}

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

html {
  color-scheme: light;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 20rem;
  color: var(--ink);
  background-color: var(--ivory);
  background-image: url("paper-grain.webp");
  background-size: 256px 256px;
  font-family: var(--body);
  font-size: 1.125rem;
  line-height: 1.62;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

img {
  height: auto;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
a,
summary,
label[for],
input[type="radio"] + label,
input[type="checkbox"] + label {
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgb(78 21 24 / 18%);
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-color: var(--oxblood);
}

button,
summary,
[role="button"] {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.section-dark :focus-visible,
.section-oxblood :focus-visible,
.site-footer :focus-visible {
  outline-color: var(--focus-on-dark);
}

::selection {
  color: var(--ivory);
  background: var(--oxblood);
}

.skip-link {
  position: fixed;
  inset: 0 auto auto 1rem;
  z-index: 100;
  transform: translateY(-130%);
  padding: 0.7rem 1rem;
  color: var(--ivory);
  background: var(--ink);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-family: var(--mono);
  font-size: var(--type-label);
  transition: transform 180ms ease-out;
}

.skip-link:focus {
  transform: translateY(0);
}

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

.container {
  width: min(calc(100% - (2 * var(--gutter))), var(--container));
  margin-inline: auto;
}

.reading {
  max-width: var(--reading);
}

.narrow {
  max-width: 53rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  color: var(--ink);
  background: rgb(243 237 222 / 96%);
  border-bottom: 1px solid rgb(32 26 19 / 14%);
}

.masthead {
  display: flex;
  min-height: 4.25rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.wordmark {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  font-family: var(--display);
  font-size: 1.12rem;
  line-height: 1;
  letter-spacing: 0.12em;
  text-decoration: none;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  font-family: var(--mono);
  font-size: var(--type-label);
  line-height: 1;
}

.nav-link,
.nav-summary {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 0.75rem 0.7rem;
  border-radius: var(--radius-sm);
  list-style: none;
  text-decoration: none;
}

.nav-link:hover,
.nav-summary:hover,
.nav-link[aria-current="page"],
.nav-summary[data-current-section="true"] {
  color: var(--oxblood);
  background: rgb(78 21 24 / 6%);
}

.nav-menu {
  position: relative;
}

.nav-summary::-webkit-details-marker {
  display: none;
}

.nav-summary::after {
  margin-left: 0.35rem;
  content: "+";
}

.nav-menu[open] .nav-summary::after {
  content: "−";
}

.nav-popover {
  position: absolute;
  top: calc(100% + 0.45rem);
  right: 0;
  display: grid;
  width: 19rem;
  padding: 0.55rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--lift);
}

.nav-popover a {
  display: grid;
  min-height: 48px;
  align-content: center;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.nav-popover a:hover,
.nav-popover a[aria-current="page"] {
  color: var(--oxblood);
  background: var(--sand);
}

.nav-popover small {
  margin-top: 0.2rem;
  color: var(--muted);
  font-family: var(--body);
  font-size: var(--type-body-small);
  line-height: 1.25;
}

.mobile-toggle {
  display: none;
  width: 48px;
  height: 48px;
  padding: 0;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--mono);
  font-size: var(--type-label);
}

.mobile-panel {
  display: none;
}

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.82rem 1.2rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--mono);
  font-size: var(--type-label);
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  transition: color 180ms ease-out, background 180ms ease-out, border-color 180ms ease-out;
}

.btn::after {
  content: "→";
  transition: transform 180ms ease-out;
}

.btn:hover::after {
  transform: translateX(0.18rem);
}

.btn[data-back]::before {
  content: "←";
  transition: transform 180ms ease-out;
}

.btn[data-back]::after {
  display: none;
}

.btn[data-back]:hover::before {
  transform: translateX(-0.18rem);
}

.btn-primary {
  color: var(--ivory);
  background: var(--oxblood);
}

.btn-primary:hover {
  color: var(--ivory);
  background: var(--ink);
  text-decoration: none;
}

.btn-secondary {
  color: var(--ink);
  background: transparent;
  border-color: rgb(32 26 19 / 55%);
}

.btn-secondary:hover {
  color: var(--ivory);
  background: var(--ink);
  border-color: var(--ink);
  text-decoration: none;
}

.btn-light {
  color: var(--ink);
  background: var(--ivory);
}

.btn-light:hover {
  color: var(--ivory);
  background: var(--oxblood);
  text-decoration: none;
}

.btn-small {
  min-height: 44px;
  padding: 0.65rem 0.9rem;
  font-size: var(--type-label);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.process-rail + .button-row,
.timeline + .button-row,
.pricing-ledger + .button-row,
.ruled-list + :is(.button-row, .btn),
.decision-anatomy + .button-row,
.split + .formula,
.container:not(.split) > .definition-list + .button-row,
.container.narrow > h2 + :is(.ruled-list, .definition-list, .button-row, .faq-tools) {
  margin-block-start: 2rem;
}

.page-hero {
  position: relative;
  overflow: clip;
  padding-block: clamp(4.5rem, 10vw, 8.5rem) clamp(4.5rem, 8vw, 7rem);
}

.page-hero::after {
  position: absolute;
  right: -8rem;
  bottom: -11rem;
  width: 30rem;
  height: 30rem;
  border: 1px solid rgb(78 21 24 / 14%);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(18rem, 0.82fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: center;
}

.home-hero {
  padding-block: clamp(3rem, 5vw, 4.5rem) clamp(4rem, 7vw, 6.25rem);
}

.home-hero .hero-grid {
  grid-template-columns: minmax(0, 1.32fr) minmax(18rem, 0.68fr);
  gap: clamp(2.5rem, 6vw, 5.5rem);
}

.home-hero h1 {
  max-width: 19ch;
  font-size: clamp(3rem, 5.6vw, 4.5rem);
  line-height: 1;
}

.home-hero .lede {
  margin-block: 1.35rem 1.6rem;
}

.hero-single {
  max-width: 62rem;
}

.hero-kicker,
.meta-line {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1.6rem;
  color: var(--oxblood);
  font-family: var(--mono);
  font-size: var(--type-micro);
  font-weight: 500;
  line-height: 1.35;
}

.hero-kicker::before {
  width: 1.75rem;
  height: 1px;
  background: currentColor;
  content: "";
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--display);
  font-weight: 400;
  text-wrap: balance;
  overflow-wrap: break-word;
}

:where(h1, h2, h3, h4)[id] {
  scroll-margin-top: 6rem;
}

.qualification-section[id] {
  scroll-margin-top: 5.25rem;
}

h1 {
  max-width: 15ch;
  font-size: clamp(3.05rem, 6.8vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.hero-single h1 {
  max-width: 18ch;
}

h2 {
  max-width: 18ch;
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: -0.015em;
}

h3 {
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
}

h4 {
  font-size: 1.35rem;
  line-height: 1.15;
}

p {
  margin-block: 0 1.25rem;
  text-wrap: pretty;
}

.lede {
  max-width: 61ch;
  margin-block: 1.7rem 2rem;
  color: var(--muted);
  font-size: clamp(1.22rem, 2vw, 1.45rem);
  line-height: 1.55;
}

.fine-print {
  max-width: 74ch;
  margin-top: 1.15rem;
  color: var(--muted);
  font-family: var(--body);
  font-size: var(--type-body-small);
  line-height: 1.5;
}

.fine-print a {
  color: var(--ink);
}

.hero-art {
  position: relative;
  min-height: 31rem;
}

.hero-art img {
  display: block;
  width: 100%;
  height: 31rem;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius-lg);
}

.hero-motion {
  display: grid;
  gap: 0.85rem;
  align-content: center;
  align-items: center;
}

.hero-motion-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  padding: 0;
  background: var(--ivory);
  border: 0;
  border-radius: var(--radius-lg);
  cursor: pointer;
}

.hero-motion video {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: auto;
  object-fit: cover;
  object-position: center center;
  background: var(--ivory);
  border-radius: inherit;
}

.art-note {
  position: absolute;
  right: -1.25rem;
  bottom: 2rem;
  width: min(19rem, 75%);
  padding: 1rem 1.1rem;
  color: var(--ivory);
  background: var(--oxblood);
  border-radius: var(--radius-md);
  font-family: var(--mono);
  font-size: var(--type-body-small);
  line-height: 1.5;
}

.hero-motion .art-note {
  position: static;
  width: min(22rem, 100%);
  margin: 0;
  padding: 1rem 0 0;
  color: var(--ink);
  background: transparent;
  border-top: 1px solid var(--border);
  border-radius: 0;
  font-family: var(--display);
  font-size: clamp(1.45rem, 2vw, 1.9rem);
  line-height: 1.15;
  text-align: right;
  justify-self: end;
}

.hero-motion .art-note em {
  color: var(--oxblood);
  font-family: var(--body);
  font-style: italic;
  font-weight: 500;
}

.hero-motion .art-note-line {
  display: block;
}

.section {
  padding-block: var(--section);
}

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

.section-paper {
  background: var(--surface);
}

.section-sand {
  background: var(--sand);
}

.section-dark,
.section-oxblood {
  color: var(--ivory);
}

.section-dark {
  background: var(--ink);
}

.section-oxblood {
  background: var(--oxblood);
}

.section-dark .lede,
.section-dark .muted,
.section-dark .section-intro,
.section-dark .fine-print,
.section-oxblood .lede,
.section-oxblood .muted,
.section-oxblood .section-intro,
.section-oxblood .fine-print {
  color: rgb(243 237 222 / 74%);
}

.section-dark .hero-kicker,
.section-dark .meta-line,
.section-oxblood .hero-kicker,
.section-oxblood .meta-line {
  color: var(--pass-on-dark);
}

.section-dark .btn-secondary,
.section-oxblood .btn-secondary {
  color: var(--ivory);
  border-color: rgb(243 237 222 / 58%);
}

.section-dark .btn-secondary:hover,
.section-oxblood .btn-secondary:hover {
  color: var(--ink);
  background: var(--ivory);
  border-color: var(--ivory);
}

.section-dark a:not(.btn),
.section-oxblood a:not(.btn) {
  color: var(--ivory);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(18rem, 0.65fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: end;
  margin-bottom: clamp(3rem, 6vw, 5.25rem);
}

.section-intro {
  max-width: 54ch;
  margin: 0;
  color: var(--muted);
  font-size: 1.25rem;
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 7vw, 7rem);
}

.split-asymmetric {
  grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.ruled-list,
.definition-list,
.pricing-ledger,
.profile-list,
.article-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid currentColor;
  border-color: rgb(32 26 19 / 22%);
}

.section-dark .ruled-list,
.section-oxblood .ruled-list,
.section-dark .definition-list,
.section-oxblood .definition-list {
  border-color: rgb(243 237 222 / 24%);
}

.ruled-list > li,
.definition-row,
.article-row {
  display: grid;
  grid-template-columns: minmax(10rem, 0.48fr) minmax(0, 1fr);
  gap: 2rem;
  padding-block: 1.45rem;
  border-bottom: 1px solid rgb(32 26 19 / 18%);
}

.section-dark .ruled-list > li,
.section-oxblood .ruled-list > li,
.section-dark .definition-row,
.section-oxblood .definition-row {
  border-color: rgb(243 237 222 / 20%);
}

.ruled-list strong,
.definition-row dt,
.definition-row .term {
  font-family: var(--mono);
  font-size: var(--type-label);
  font-weight: 500;
  line-height: 1.5;
}

.definition-row dd,
.definition-row p,
.ruled-list p {
  margin: 0;
}

.muted {
  color: var(--muted);
}

.mono {
  font-family: var(--mono);
}

.stat-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin-block: 2rem;
  padding-block: 1rem;
  border-block: 1px solid rgb(32 26 19 / 20%);
  font-family: var(--mono);
  font-size: var(--type-label);
}

.section-dark .stat-line,
.section-oxblood .stat-line {
  border-color: rgb(243 237 222 / 22%);
}

.evidence-panel {
  padding: clamp(1.5rem, 4vw, 2.4rem);
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--ring);
}

.evidence-panel h3 {
  margin-bottom: 1rem;
}

.evidence-panel-dark {
  color: var(--ivory);
  background: var(--ink);
  box-shadow: inset 0 0 0 1px rgb(243 237 222 / 14%);
}

.permission-boundary {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.65fr);
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--ring);
}

.permission-pane {
  min-width: 0;
  padding: clamp(1.5rem, 4vw, 2.4rem);
}

.permission-pane h3 {
  margin-bottom: 1.5rem;
}

.permission-access {
  color: var(--ink);
  background: var(--surface);
}

.permission-authority {
  color: var(--ivory);
  background: var(--ink);
}

.permission-boundary .definition-row {
  grid-template-columns: minmax(8rem, 0.42fr) minmax(0, 1fr);
  gap: 1.25rem;
  padding-block: 1.1rem;
}

.permission-boundary .definition-row:last-child {
  border-bottom: 0;
}

.permission-authority .definition-list {
  border-color: rgb(243 237 222 / 24%);
}

.permission-authority .definition-row {
  grid-template-columns: 1fr;
  border-color: rgb(243 237 222 / 20%);
}

.permission-authority .definition-row dt {
  color: var(--pass-on-dark);
}

.permission-authority .definition-row dd {
  font-size: clamp(1.3rem, 2vw, 1.65rem);
  line-height: 1.45;
}

.evidence-panel-oxblood {
  color: var(--ivory);
  background: var(--oxblood);
  box-shadow: inset 0 0 0 1px rgb(243 237 222 / 15%);
}

.evidence-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1rem;
  margin-bottom: 1.4rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: var(--type-micro);
}

.evidence-panel-dark .evidence-meta,
.evidence-panel-oxblood .evidence-meta {
  color: rgb(243 237 222 / 70%);
}

.guarantee-band {
  position: relative;
  overflow: hidden;
}

.guarantee-band::after {
  position: absolute;
  top: -13rem;
  right: -9rem;
  width: 28rem;
  height: 28rem;
  border: 1px solid rgb(243 237 222 / 18%);
  border-radius: 50%;
  content: "";
}

.guarantee-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(16rem, 0.7fr);
  gap: clamp(2.5rem, 8vw, 7rem);
  align-items: end;
}

.guarantee-grid h2 {
  max-width: 14ch;
  font-size: clamp(3rem, 6.5vw, 5rem);
}

.price {
  font-family: var(--display);
  font-size: clamp(2.7rem, 6vw, 4.8rem);
  line-height: 0.95;
  white-space: nowrap;
}

.price .mono {
  display: inline-block;
  margin-left: 0.35rem;
  font-size: clamp(0.78rem, 1.15vw, 0.95rem);
  line-height: 1.2;
  vertical-align: baseline;
  white-space: nowrap;
}

.pricing-ledger {
  border-color: var(--ink);
}

.price-row {
  display: grid;
  grid-template-columns: 0.72fr 1fr 1.2fr;
  gap: 2rem;
  align-items: center;
  padding-block: 1.7rem;
  border-bottom: 1px solid rgb(32 26 19 / 24%);
}

.price-row p {
  margin: 0;
}

.price-row .price-label {
  font-family: var(--mono);
  font-size: var(--type-label);
}

.process-rail {
  counter-reset: process;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid currentColor;
}

.process-step {
  counter-increment: process;
  display: grid;
  grid-template-columns: 4.5rem minmax(10rem, 0.55fr) minmax(0, 1fr);
  gap: 1.5rem;
  padding-block: 1.65rem;
  border-bottom: 1px solid rgb(32 26 19 / 20%);
}

.section-dark .process-step,
.section-oxblood .process-step {
  border-color: rgb(243 237 222 / 21%);
}

.process-step::before {
  content: counter(process, decimal-leading-zero);
  font-family: var(--mono);
  font-size: var(--type-micro);
}

.process-step h3 {
  font-family: var(--mono);
  font-size: var(--type-label);
  line-height: 1.45;
}

.process-step p:last-child {
  margin-bottom: 0;
}

.architecture {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.architecture-group {
  display: grid;
  align-content: start;
  gap: 0.65rem;
  padding: 0.9rem;
  background: rgb(243 237 222 / 5%);
  border: 1px solid rgb(243 237 222 / 18%);
  border-radius: var(--radius-md);
}

.architecture-group > p {
  margin: 0 0 0.4rem;
  color: rgb(243 237 222 / 68%);
  font-family: var(--mono);
  font-size: var(--type-micro);
}

.diagram-node {
  width: 100%;
  min-height: 66px;
  padding: 0.8rem;
  color: var(--ivory);
  text-align: left;
  background: transparent;
  border: 1px solid rgb(243 237 222 / 20%);
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: var(--type-label);
  line-height: 1.35;
  transition: background 180ms ease-out, border-color 180ms ease-out;
}

.diagram-node:hover,
.diagram-node[aria-pressed="true"] {
  background: var(--oxblood);
  border-color: rgb(243 237 222 / 58%);
}

.diagram-detail {
  min-height: 7.2rem;
  margin-top: 1rem;
  padding: 1.2rem;
  color: var(--ink);
  background: var(--ivory);
  border-radius: var(--radius-md);
}

.diagram-detail strong {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--mono);
  font-size: var(--type-label);
}

.decision-anatomy {
  display: grid;
  grid-template-columns: 0.7fr 1fr 0.8fr;
  gap: 1px;
  overflow: hidden;
  color: var(--ink);
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.decision-anatomy > div {
  padding: 1.4rem;
  background: var(--surface);
}

.decision-anatomy h3,
.decision-anatomy h4 {
  margin-bottom: 1rem;
  font-family: var(--mono);
  font-size: var(--type-label);
  line-height: 1.45;
}

.decision-anatomy ul {
  margin: 0;
  padding-left: 1.15rem;
}

.formula {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--ivory);
  background: var(--ink);
  border-radius: var(--radius-md);
  font-family: var(--mono);
  font-size: clamp(0.8rem, 2vw, 1rem);
  line-height: 1.8;
  white-space: pre-line;
}

.formula .pass {
  color: var(--pass-on-dark);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 3rem 0 0;
  padding: 0;
  border-top: 1px solid currentColor;
  list-style: none;
}

.timeline-item {
  position: relative;
  padding: 1.5rem 1rem 0 0;
}

.timeline-item::before {
  position: absolute;
  top: -0.3rem;
  left: 0;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--brass);
  border-radius: 50%;
  content: "";
}

.timeline-item strong {
  display: block;
  margin-bottom: 0.55rem;
  font-family: var(--mono);
  font-size: var(--type-label);
}

.timeline-item p {
  font-size: 0.98rem;
}

.profile-list {
  border-color: var(--ink);
}

.profile-row {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: clamp(1.5rem, 5vw, 4.5rem);
  align-items: start;
  padding-block: 2rem;
  border-bottom: 1px solid rgb(32 26 19 / 22%);
}

.profile-portrait {
  display: block;
  width: 8rem;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center;
  background: var(--sand);
  border-radius: var(--radius-sm);
}

.profile-row p:last-child {
  margin-bottom: 0;
}

.article-list {
  border-color: var(--ink);
}

.article-row {
  grid-template-columns: 0.32fr 1fr 0.18fr;
  align-items: start;
  padding-block: 2rem;
}

.article-row a {
  text-decoration: none;
}

.article-row h3 {
  margin-bottom: 0.65rem;
}

.article-row .topic,
.article-row .read-time {
  font-family: var(--mono);
  font-size: var(--type-micro);
}

.article-layout {
  display: grid;
  grid-template-columns: 14rem minmax(0, 43rem);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: start;
}

.article-toc {
  position: sticky;
  top: 6rem;
  font-family: var(--mono);
  font-size: var(--type-micro);
}

.article-toc ol {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.article-toc li + li {
  margin-top: 0.65rem;
}

.article-toc a {
  color: var(--muted);
  text-decoration: none;
}

.article-body > p:first-of-type {
  font-size: 1.38rem;
}

.article-body h2 {
  margin: 4rem 0 1.2rem;
  font-size: clamp(2rem, 4vw, 2.85rem);
}

.article-body blockquote {
  margin: 3rem 0;
  padding: 2rem 0;
  color: var(--oxblood);
  border-block: 1px solid var(--border);
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  line-height: 1.08;
}

.faq-tools {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  margin-bottom: 2rem;
}

.field,
select,
textarea {
  width: 100%;
  min-height: 52px;
  padding: 0.8rem 0.95rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

textarea {
  min-height: 8rem;
  resize: vertical;
}

.field:focus,
select:focus,
textarea:focus {
  border-color: var(--focus);
  outline: 3px solid rgb(138 77 54 / 22%);
  outline-offset: 2px;
}

.faq-list {
  border-top: 1px solid var(--ink);
}

.faq-item {
  border-bottom: 1px solid rgb(32 26 19 / 22%);
}

.faq-item[hidden] {
  display: none;
}

.faq-item summary {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  min-height: 64px;
  align-items: center;
  padding-block: 1.15rem;
  list-style: none;
  font-family: var(--display);
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  line-height: 1.08;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 1rem;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-answer {
  max-width: 61ch;
  padding: 0 0 1.7rem;
  color: var(--muted);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 2rem;
}

.filter-button {
  min-height: 44px;
  padding: 0.65rem 0.8rem;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 9999px;
  font-family: var(--mono);
  font-size: var(--type-label);
}

.filter-button[aria-pressed="true"] {
  color: var(--ivory);
  background: var(--oxblood);
  border-color: var(--oxblood);
}

.qualification-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: start;
}

.qualification-aside {
  position: sticky;
  top: 6rem;
}

.progress-text {
  margin-bottom: 1rem;
  font-family: var(--mono);
  font-size: var(--type-label);
}

.progress-track {
  height: 3px;
  overflow: hidden;
  background: var(--sand);
}

.progress-bar {
  width: 100%;
  height: 100%;
  transform: scaleX(0.25);
  transform-origin: left center;
  background: var(--oxblood);
  transition: transform 220ms ease-out;
}

.qualification-form {
  min-width: 0;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--ring);
}

.form-utility {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 1rem;
}

.clear-draft {
  min-height: 44px;
  padding: 0.5rem 0;
  color: var(--muted);
  background: transparent;
  border: 0;
  font-family: var(--mono);
  font-size: var(--type-label);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.clear-draft:hover {
  color: var(--oxblood);
}

.form-step[hidden],
.form-result[hidden],
.review-panel[hidden] {
  display: none;
}

.form-step h2,
.review-panel h2,
.form-result h2 {
  margin-bottom: 2rem;
  font-size: clamp(2rem, 4vw, 3rem);
}

.field-group {
  margin: 0 0 2rem;
  padding: 0;
  border: 0;
}

.field-group legend,
.field-label {
  display: block;
  margin-bottom: 0.8rem;
  font-family: var(--mono);
  font-size: var(--type-label);
  font-weight: 500;
  line-height: 1.45;
}

.helper {
  margin: -0.45rem 0 0.85rem;
  color: var(--muted);
  font-size: 0.98rem;
}

.choice-list {
  display: grid;
  gap: 0.55rem;
}

.choice {
  position: relative;
}

.choice input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.choice label {
  display: grid;
  min-height: 50px;
  align-content: center;
  padding: 0.75rem 2.8rem 0.75rem 0.9rem;
  background: var(--ivory);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.choice label::after {
  position: absolute;
  top: 50%;
  right: 1rem;
  width: 0.9rem;
  height: 0.9rem;
  transform: translateY(-50%);
  border: 1px solid var(--muted);
  border-radius: 50%;
  content: "";
}

.choice input[type="checkbox"] + label::after {
  border-radius: var(--radius-sm);
}

.choice input:checked + label {
  background: rgb(78 21 24 / 7%);
  border-color: var(--oxblood);
}

.choice input:checked + label::after {
  background: var(--oxblood);
  border-color: var(--oxblood);
  box-shadow: inset 0 0 0 3px var(--surface);
}

.choice input:focus-visible + label {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.form-control {
  margin-bottom: 1.25rem;
}

.form-control label {
  display: block;
  margin-bottom: 0.45rem;
  font-family: var(--mono);
  font-size: var(--type-label);
}

.error-message {
  min-height: 1.1rem;
  margin: 0.35rem 0 0;
  color: var(--error);
  font-family: var(--mono);
  font-size: var(--type-label);
}

[aria-invalid="true"] {
  border-color: var(--error) !important;
}

[data-required-choice][aria-invalid="true"] .choice label {
  border-color: var(--error);
}

.form-actions {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 2.3rem;
}

.review-list {
  margin: 0;
}

.review-row {
  display: grid;
  grid-template-columns: 0.45fr 1fr;
  gap: 1.5rem;
  padding-block: 0.85rem;
  border-bottom: 1px solid var(--border);
}

.review-row dt {
  font-family: var(--mono);
  font-size: var(--type-label);
}

.review-row dd {
  margin: 0;
}

.result-marker {
  display: inline-block;
  margin-bottom: 1.2rem;
  padding: 0.35rem 0.55rem;
  color: var(--ivory);
  background: var(--success);
  border-radius: 9999px;
  font-family: var(--mono);
  font-size: var(--type-label);
}

.status-message {
  margin-top: 1rem;
  font-family: var(--mono);
  font-size: var(--type-label);
}

.site-footer {
  color: var(--ivory);
  background: var(--ink);
}

.site-footer .btn-secondary {
  color: var(--ivory);
  border-color: rgb(243 237 222 / 58%);
}

.site-footer .btn-secondary:hover {
  color: var(--ink);
  background: var(--ivory);
  border-color: var(--ivory);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.1fr 1.9fr;
  gap: clamp(3rem, 8vw, 8rem);
  padding-block: 5.5rem 4rem;
}

.footer-brand h2 {
  margin-bottom: 1.3rem;
  font-size: clamp(2.2rem, 5vw, 3.7rem);
}

.footer-brand p {
  max-width: 38ch;
  color: rgb(243 237 222 / 72%);
}

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

.footer-nav h3 {
  margin-bottom: 1rem;
  font-family: var(--mono);
  font-size: 0.7rem;
}

.footer-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-nav li + li {
  margin-top: 0.5rem;
}

.footer-nav a {
  color: rgb(243 237 222 / 72%);
  font-size: 1rem;
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--ivory);
}

.footer-base {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 1.2rem 2rem;
  color: rgb(243 237 222 / 55%);
  border-top: 1px solid rgb(243 237 222 / 15%);
  font-family: var(--mono);
  font-size: var(--type-label);
  line-height: 1.5;
}

.footer-base p {
  margin: 0;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.5rem 1rem;
}

.footer-legal a {
  color: inherit;
}

.no-results {
  padding: 2rem 0;
  font-family: var(--mono);
  font-size: 0.75rem;
}

@media (max-width: 68rem) {
  .site-header {
    background: var(--ivory);
  }

  .desktop-nav {
    display: none;
  }

  .mobile-toggle {
    display: inline-grid;
    place-items: center;
  }

  .mobile-panel {
    position: fixed;
    inset: 4.25rem 0 0;
    z-index: var(--z-menu);
    overflow-y: auto;
    padding: 1.25rem var(--gutter) calc(2rem + env(safe-area-inset-bottom));
    overscroll-behavior: contain;
    color: var(--ink);
    background: var(--ivory);
  }

  .mobile-panel[data-open="true"] {
    display: block;
  }

  .mobile-panel a {
    display: flex;
    min-height: 52px;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    font-family: var(--display);
    font-size: 1.65rem;
    text-decoration: none;
  }

  .mobile-panel a[aria-current="page"] {
    color: var(--oxblood);
  }

  .mobile-nav-group {
    border-bottom: 1px solid var(--border);
  }

  .mobile-nav-group summary {
    display: flex;
    min-height: 52px;
    align-items: center;
    justify-content: space-between;
    list-style: none;
    font-family: var(--display);
    font-size: 1.65rem;
  }

  .mobile-nav-group summary::-webkit-details-marker {
    display: none;
  }

  .mobile-nav-group summary::after {
    content: "+";
    font-family: var(--mono);
    font-size: 1rem;
  }

  .mobile-nav-group[open] summary::after {
    content: "−";
  }

  .mobile-nav-submenu {
    padding: 0 0 0.6rem 1rem;
  }

  .mobile-panel .mobile-nav-submenu a {
    min-height: 48px;
    font-size: 1.28rem;
  }

  .mobile-panel .btn {
    margin-top: 1.5rem;
    color: var(--ivory);
    background: var(--oxblood);
    font-family: var(--mono);
    font-size: var(--type-label);
  }

  .mobile-panel .btn[aria-current="page"] {
    color: var(--ivory);
  }

  .hero-grid,
  .section-heading,
  .guarantee-grid,
  .qualification-shell,
  .footer-main {
    grid-template-columns: 1fr;
  }

  .home-hero .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-art {
    width: min(100%, 40rem);
  }

  .qualification-aside {
    position: static;
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .architecture {
    grid-template-columns: 1fr;
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-toc {
    position: static;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
    font-size: var(--type-body-small);
  }

  .article-toc li + li {
    margin-top: 0;
  }

  .article-toc a {
    display: flex;
    min-height: 44px;
    align-items: center;
  }
}

@media (max-width: 48rem) {
  body {
    font-size: 1.0625rem;
  }

  .page-hero::after {
    display: none;
  }

  .page-hero {
    padding-block: 3.5rem 4rem;
  }

  .qualification-section {
    padding-top: 2.5rem;
  }

  .qualification-aside .lede {
    display: none;
  }

  .qualification-aside .hero-kicker {
    display: none;
  }

  .qualification-aside .fine-print {
    display: none;
  }

  .qualification-aside h2 {
    font-size: 1.8rem;
  }

  h1 {
    max-width: none;
    font-size: clamp(2.65rem, 12vw, 3.4rem);
  }

  .home-hero h1 {
    max-width: none;
    font-size: clamp(2.55rem, 11vw, 3.25rem);
  }

  .hero-art,
  .hero-art img {
    min-height: 25rem;
    height: 25rem;
  }

  .hero-art.hero-motion {
    min-height: 0;
    height: auto;
  }

  .art-note {
    right: 0.75rem;
    bottom: 0.75rem;
  }

  .split,
  .split-asymmetric,
  .grid-3,
  .grid-4,
  .form-grid,
  .footer-nav {
    grid-template-columns: 1fr;
  }

  .ruled-list > li,
  .definition-row,
  .article-row,
  .price-row,
  .process-step,
  .profile-row,
  .review-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .process-step {
    padding-block: 1.35rem;
  }

  .profile-row {
    gap: 1.25rem;
  }

  .profile-portrait {
    width: 6.5rem;
  }

  .decision-anatomy {
    grid-template-columns: 1fr;
  }

  .permission-boundary {
    grid-template-columns: 1fr;
  }

  .permission-boundary .definition-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .permission-authority {
    border-top: 1px solid rgb(243 237 222 / 24%);
  }

  .timeline {
    grid-template-columns: 1fr;
    border-top: 0;
    border-left: 1px solid currentColor;
  }

  .timeline-item {
    padding: 0 0 1.7rem 1.3rem;
  }

  .timeline-item::before {
    top: 0.45rem;
    left: -0.32rem;
  }

  .faq-tools {
    grid-template-columns: 1fr;
  }

  .form-actions,
  .footer-base {
    flex-direction: column;
  }

  .footer-legal {
    justify-content: flex-start;
    gap-block: 0;
  }

  .footer-nav li + li {
    margin-top: 0;
  }

  .footer-nav a,
  .footer-legal a {
    display: flex;
    min-height: 44px;
    align-items: center;
  }

  .form-actions .btn {
    width: 100%;
  }

  .footer-main {
    padding-block: 4rem 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (forced-colors: active) {
  .choice input {
    top: 50%;
    right: 1rem;
    width: 1rem;
    height: 1rem;
    transform: translateY(-50%);
    opacity: 1;
  }

  .choice label::after {
    display: none;
  }
}

@media print {
  .site-header,
  .site-footer,
  .button-row,
  .mobile-panel,
  .article-toc {
    display: none !important;
  }

  body {
    color: var(--print-ink);
    background: var(--print-paper);
  }

  .section,
  .page-hero {
    padding-block: 2rem;
  }

  .section-dark,
  .section-oxblood {
    color: var(--print-ink);
    background: var(--print-paper);
  }
}