:root {
  --ink: #111c2e;
  --ink-soft: #1c2940;
  --paper: #f6f4ee;
  --paper-deep: #ece8dd;
  --paper-light: #fbfaf7;
  --bronze: #b18a56;
  --bronze-dark: #76552d;
  --graphite: #4f5966;
  --line: rgba(17, 28, 46, 0.16);
  --line-light: rgba(246, 244, 238, 0.18);
  --success: #1f6b4f;
  --warning: #8b5d19;
  --danger: #922f35;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shell: min(1180px, calc(100vw - 48px));
  --narrow: min(960px, calc(100vw - 48px));
  --radius: 3px;
  --shadow: 0 24px 64px rgba(17, 28, 46, 0.1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.68;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

::selection {
  color: var(--paper);
  background: var(--bronze-dark);
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.19em;
}

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

button,
a,
input,
select,
summary,
label {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid #d5a967;
  outline-offset: 4px;
}

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

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1,
h2,
h3 {
  margin-top: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

h1 {
  font-size: clamp(3rem, 7vw, 6rem);
}

h2 {
  font-size: clamp(2.15rem, 4vw, 3.8rem);
}

h3 {
  font-size: clamp(1.3rem, 2vw, 1.7rem);
}

p {
  margin-top: 0;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.shell--narrow {
  width: var(--narrow);
}

.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;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-160%);
}

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

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  min-height: 88px;
  color: var(--ink);
  background: rgba(246, 244, 238, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.home .site-header {
  color: var(--paper);
  background: var(--ink);
  border-bottom-color: var(--line-light);
  backdrop-filter: none;
}

.site-header.is-scrolled {
  box-shadow: 0 10px 28px rgba(17, 28, 46, 0.08);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
  gap: 32px;
}

.wordmark {
  display: inline-flex;
  flex: 0 0 auto;
  flex-direction: column;
  text-decoration: none;
  line-height: 1;
}

.wordmark span {
  font-family: var(--serif);
  font-size: 1.42rem;
  letter-spacing: 0.18em;
}

.wordmark small {
  margin-top: 8px;
  color: var(--bronze-dark);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.home .wordmark small,
.wordmark--footer small {
  color: #d2b07e;
}

.site-navigation {
  display: flex;
  align-items: center;
  gap: 32px;
}

.site-navigation__links {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 34px);
}

.site-navigation__links a {
  position: relative;
  font-size: 0.83rem;
  font-weight: 650;
  letter-spacing: 0.03em;
  text-decoration: none;
}

.site-navigation__links a::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 180ms ease, transform 180ms ease;
}

.site-navigation__links a:hover::after,
.site-navigation__links a[aria-current="page"]::after {
  opacity: 1;
  transform: scaleX(1);
}

.menu-button {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px;
  color: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.menu-button__label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.menu-button__lines,
.menu-button__lines::before,
.menu-button__lines::after {
  width: 22px;
  height: 1px;
  background: currentColor;
}

.menu-button__lines {
  position: relative;
}

.menu-button__lines::before,
.menu-button__lines::after {
  position: absolute;
  left: 0;
  content: "";
  transition: transform 180ms ease, top 180ms ease;
}

.menu-button__lines::before {
  top: -6px;
}

.menu-button__lines::after {
  top: 6px;
}

.menu-button[aria-expanded="true"] .menu-button__lines {
  background: transparent;
}

.menu-button[aria-expanded="true"] .menu-button__lines::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-button[aria-expanded="true"] .menu-button__lines::after {
  top: 0;
  transform: rotate(-45deg);
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  color: var(--paper);
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.045em;
  line-height: 1.15;
  text-decoration: none;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.button:hover {
  color: var(--paper);
  background: var(--ink-soft);
  border-color: var(--ink-soft);
  transform: translateY(-1px);
}

.button--small {
  min-height: 42px;
  padding: 10px 17px;
  font-size: 0.76rem;
}

.home .site-header .button {
  color: var(--ink);
  background: var(--paper);
  border-color: var(--paper);
}

.home .site-header .button:hover {
  background: #fff;
}

.button--light {
  color: var(--ink);
  background: var(--paper);
  border-color: var(--paper);
}

.button--light:hover {
  color: var(--ink);
  background: #fff;
  border-color: #fff;
}

.button--ghost-light {
  color: var(--paper);
  background: transparent;
  border-color: rgba(246, 244, 238, 0.42);
}

.button--ghost-light:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--paper);
}

.button--outline {
  color: var(--ink);
  background: transparent;
}

.button--outline:hover {
  color: var(--paper);
  background: var(--ink);
}

.kicker {
  margin-bottom: 18px;
  color: var(--bronze-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  line-height: 1.3;
  text-transform: uppercase;
}

.kicker--gold {
  color: #d8b681;
}

.section {
  margin-block: clamp(88px, 12vw, 156px);
}

.section--intro {
  margin-top: clamp(104px, 13vw, 176px);
}

.section--dark {
  width: 100%;
  margin-block: 0;
  padding-block: clamp(92px, 12vw, 160px);
  color: rgba(246, 244, 238, 0.75);
  background: var(--ink);
}

.section--dark h2,
.section--dark h3,
.section--dark strong {
  color: var(--paper);
}

.section--paper-deep {
  width: 100%;
  margin-block: 0;
  padding-block: clamp(92px, 12vw, 152px);
  background: var(--paper-deep);
}

.section-heading {
  max-width: 730px;
  margin-bottom: clamp(42px, 6vw, 72px);
}

.section-heading h2 {
  margin-bottom: 24px;
}

.section-heading p:last-child {
  max-width: 620px;
  margin-bottom: 0;
  color: var(--graphite);
  font-size: 1.04rem;
}

.section-heading--center {
  margin-inline: auto;
  text-align: center;
}

.section-heading--center p:last-child {
  margin-inline: auto;
}

.center-action {
  display: flex;
  justify-content: center;
  margin-top: 50px;
}

.home-hero {
  position: relative;
  min-height: calc(100svh - 88px);
  overflow: hidden;
  color: var(--paper);
  background: var(--ink);
  isolation: isolate;
}

.home-hero__pattern {
  position: absolute;
  z-index: -1;
  inset: -20% -10%;
  opacity: 0.55;
}

.home-hero__pattern::before,
.home-hero__pattern::after {
  position: absolute;
  border: 1px solid rgba(177, 138, 86, 0.2);
  border-radius: 50%;
  content: "";
}

.home-hero__pattern::before {
  width: min(84vw, 940px);
  aspect-ratio: 1;
  top: -36%;
  left: 50%;
  box-shadow: 0 0 0 56px rgba(177, 138, 86, 0.028), 0 0 0 112px rgba(177, 138, 86, 0.024), 0 0 0 168px rgba(177, 138, 86, 0.02), 0 0 0 224px rgba(177, 138, 86, 0.016);
  transform: translateX(-50%);
}

.home-hero__pattern::after {
  width: 480px;
  height: 480px;
  right: -190px;
  bottom: -220px;
  box-shadow: 0 0 0 36px rgba(177, 138, 86, 0.035), 0 0 0 72px rgba(177, 138, 86, 0.025);
}

.home-hero__inner {
  display: flex;
  min-height: calc(100svh - 88px);
  align-items: center;
  flex-direction: column;
  justify-content: center;
  padding-block: 62px 105px;
  text-align: center;
}

.status-line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: clamp(42px, 6vw, 72px);
  color: rgba(246, 244, 238, 0.66);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.3;
  text-transform: uppercase;
}

.status-line span {
  width: 6px;
  height: 6px;
  background: var(--bronze);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(177, 138, 86, 0.1);
}

.status-line b {
  font-weight: 400;
}

.hero-wordmark {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.8rem, 7vw, 5.9rem);
  letter-spacing: 0.21em;
  line-height: 0.9;
  text-indent: 0.21em;
}

.hero-claim {
  margin: 20px 0 46px;
  color: #d8b681;
  font-size: clamp(0.66rem, 1.3vw, 0.86rem);
  font-weight: 750;
  letter-spacing: 0.32em;
  line-height: 1.3;
  text-indent: 0.32em;
  text-transform: uppercase;
}

.home-hero h1 {
  max-width: 910px;
  margin-bottom: 27px;
  color: var(--paper);
  font-size: clamp(2.6rem, 5.4vw, 5rem);
}

.home-hero__intro {
  max-width: 750px;
  margin-bottom: 35px;
  color: rgba(246, 244, 238, 0.72);
  font-size: clamp(1rem, 1.7vw, 1.22rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.hero-verification {
  width: min(100%, 650px);
  margin-top: clamp(46px, 7vw, 76px);
  padding-top: 24px;
  border-top: 1px solid var(--line-light);
  text-align: left;
}

.hero-verification > p {
  margin-bottom: 11px;
  color: rgba(246, 244, 238, 0.62);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  transform: translateX(-50%);
}

.scroll-cue span {
  width: 1px;
  height: 26px;
  background: rgba(246, 244, 238, 0.4);
}

.scroll-cue span::after {
  display: block;
  width: 7px;
  height: 7px;
  margin: 17px 0 0 -3px;
  border-right: 1px solid rgba(246, 244, 238, 0.7);
  border-bottom: 1px solid rgba(246, 244, 238, 0.7);
  content: "";
  transform: rotate(45deg);
}

.certificate-form label {
  display: block;
  margin-bottom: 9px;
  font-size: 0.82rem;
  font-weight: 700;
}

.field-action {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
}

.field-action input {
  width: 100%;
  min-height: 56px;
  padding: 13px 17px;
  color: var(--ink);
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-right: 0;
  border-radius: var(--radius) 0 0 var(--radius);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.94rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.field-action .button {
  min-width: 118px;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.certificate-form--compact label {
  color: var(--paper);
}

.certificate-form--compact .field-action input {
  min-height: 54px;
  background: rgba(246, 244, 238, 0.98);
  border-color: transparent;
}

.field-hint {
  margin: 9px 0 0;
  color: var(--graphite);
  font-size: 0.74rem;
}

.certificate-form--compact .field-hint {
  color: rgba(246, 244, 238, 0.52);
}

.verification-result {
  margin-top: 16px;
  padding: 18px;
  color: var(--ink);
  background: var(--paper-light);
  border-left: 3px solid var(--bronze);
}

.verification-result[data-state="valid"] {
  border-left-color: var(--success);
}

.verification-result[data-state="revoked"],
.verification-result[data-state="error"] {
  border-left-color: var(--danger);
}

.verification-result strong,
.verification-result span {
  display: block;
}

.verification-result strong {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 600;
}

.verification-result span {
  margin-top: 5px;
  color: var(--graphite);
  font-size: 0.82rem;
}

.evidence-chain {
  display: grid;
  position: relative;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.evidence-chain > div {
  min-height: 230px;
  padding: 30px 28px;
  border-right: 1px solid var(--line);
}

.evidence-chain > div:last-child {
  border-right: 0;
}

.evidence-chain span,
.process-grid > li > span,
.three-cards > article > span {
  display: block;
  margin-bottom: 58px;
  color: var(--bronze-dark);
  font-family: var(--serif);
  font-size: 0.88rem;
  font-style: italic;
}

.evidence-chain strong,
.evidence-chain small {
  display: block;
}

.evidence-chain strong {
  margin-bottom: 9px;
  font-family: var(--serif);
  font-size: 1.27rem;
  font-weight: 600;
  line-height: 1.2;
}

.evidence-chain small {
  color: var(--graphite);
  font-size: 0.8rem;
  line-height: 1.55;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1fr);
  align-items: start;
  gap: clamp(54px, 9vw, 120px);
}

.split--wide {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 0.8fr);
}

.split h2 {
  margin-bottom: 24px;
}

.split > div > p:last-child {
  margin-bottom: 0;
}

.large-copy {
  margin-bottom: 24px;
  color: inherit;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.6vw, 2.15rem);
  line-height: 1.35;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.text-link span {
  transition: transform 180ms ease;
}

.text-link:hover span {
  transform: translateX(4px);
}

.text-link--light {
  color: var(--paper);
}

.process-grid {
  display: grid;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(4, 1fr);
  list-style: none;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.process-grid > li {
  min-height: 315px;
  padding: 32px 25px;
  border-right: 1px solid var(--line);
}

.process-grid > li:last-child {
  border-right: 0;
}

.process-grid > li > span {
  margin-bottom: 76px;
}

.process-grid h3 {
  margin-bottom: 16px;
}

.process-grid p {
  margin-bottom: 0;
  color: var(--graphite);
  font-size: 0.9rem;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.category-grid article {
  min-height: 188px;
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.category-grid span {
  float: right;
  color: var(--bronze-dark);
  font-family: var(--serif);
  font-size: 0.76rem;
  font-style: italic;
}

.category-grid h3 {
  max-width: 80%;
  margin-bottom: 28px;
  font-size: 1.35rem;
}

.category-grid p {
  margin: 0;
  color: var(--graphite);
  font-size: 0.76rem;
  line-height: 1.55;
}

.certificate-story {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.75fr);
  align-items: center;
  gap: clamp(56px, 9vw, 120px);
}

.certificate-story > div:last-child h2 {
  margin-bottom: 25px;
}

.certificate-preview {
  position: relative;
  aspect-ratio: 1.414 / 1;
  overflow: hidden;
  padding: clamp(24px, 4vw, 48px);
  background: var(--paper-light);
  border: 1px solid rgba(118, 85, 45, 0.35);
  box-shadow: var(--shadow);
}

.certificate-preview::before,
.certificate-preview::after {
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(118, 85, 45, 0.24);
  content: "";
}

.certificate-preview::after {
  inset: 17px;
  border-color: rgba(17, 28, 46, 0.1);
}

.certificate-preview__lines {
  position: absolute;
  width: 70%;
  aspect-ratio: 1;
  top: 50%;
  left: 50%;
  border: 1px solid rgba(177, 138, 86, 0.15);
  border-radius: 50%;
  box-shadow: 0 0 0 18px rgba(177, 138, 86, 0.025), 0 0 0 36px rgba(177, 138, 86, 0.02), 0 0 0 54px rgba(177, 138, 86, 0.018);
  transform: translate(-50%, -50%);
}

.certificate-preview__top,
.certificate-preview__foot {
  display: flex;
  position: relative;
  z-index: 1;
  align-items: center;
  justify-content: space-between;
}

.certificate-preview__top span {
  font-family: var(--serif);
  font-size: 1rem;
  letter-spacing: 0.18em;
}

.certificate-preview__top small,
.certificate-preview__foot {
  color: var(--graphite);
  font-size: clamp(0.43rem, 0.8vw, 0.58rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.certificate-preview__center {
  display: flex;
  position: absolute;
  z-index: 1;
  inset: 23% 14% 18%;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.certificate-preview__center small {
  margin-bottom: 17px;
  color: var(--bronze-dark);
  font-size: clamp(0.48rem, 1vw, 0.7rem);
  font-weight: 800;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.certificate-preview__center strong {
  max-width: 360px;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.6vw, 2.35rem);
  font-weight: 500;
  line-height: 1.15;
}

.certificate-preview__center p {
  margin: 19px 0 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: clamp(0.54rem, 0.95vw, 0.7rem);
  letter-spacing: 0.08em;
}

.certificate-preview__foot {
  position: absolute;
  right: clamp(24px, 4vw, 48px);
  bottom: clamp(24px, 4vw, 48px);
  left: clamp(24px, 4vw, 48px);
}

.feature-list {
  margin: 30px 0 34px;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding: 10px 0 10px 25px;
  border-bottom: 1px solid var(--line);
}

.feature-list li::before {
  position: absolute;
  top: 20px;
  left: 2px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--bronze-dark);
  border-radius: 50%;
  content: "";
}

.hash-story {
  overflow: hidden;
}

.hash-story .split {
  position: relative;
}

.hash-demo {
  position: absolute;
  z-index: 0;
  top: -130px;
  left: -55px;
  margin: 0;
  color: rgba(246, 244, 238, 0.03);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: clamp(6rem, 15vw, 13rem);
  font-weight: 700;
  letter-spacing: -0.08em;
  line-height: 1;
  white-space: nowrap;
}

.hash-story .split > div {
  position: relative;
  z-index: 1;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.article-card {
  display: flex;
  min-height: 375px;
  padding: 31px;
  flex-direction: column;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: background 180ms ease;
}

.article-card:hover {
  background: var(--paper-light);
}

.article-card > span {
  margin-bottom: 60px;
  color: var(--bronze-dark);
  font-size: 0.69rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.article-card h3 {
  margin-bottom: 18px;
}

.article-card p {
  color: var(--graphite);
  font-size: 0.86rem;
}

.article-card b {
  margin-top: auto;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}

.article-card i {
  margin-left: 8px;
  font-style: normal;
}

.launch-panel {
  display: grid;
  padding: clamp(34px, 6vw, 66px);
  color: rgba(246, 244, 238, 0.72);
  background: var(--ink);
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 48px;
}

.launch-panel h2 {
  margin-bottom: 18px;
  color: var(--paper);
  font-size: clamp(2rem, 3.6vw, 3.3rem);
}

.launch-panel p:last-child {
  max-width: 690px;
  margin-bottom: 0;
}

.launch-panel--home {
  margin-bottom: clamp(90px, 12vw, 150px);
}

.page-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(90px, 12vw, 158px) clamp(75px, 10vw, 125px);
  background: var(--paper-deep);
}

.page-hero__lines {
  position: absolute;
  width: min(68vw, 760px);
  aspect-ratio: 1;
  top: -78%;
  right: -14%;
  border: 1px solid rgba(118, 85, 45, 0.13);
  border-radius: 50%;
  box-shadow: 0 0 0 50px rgba(118, 85, 45, 0.025), 0 0 0 100px rgba(118, 85, 45, 0.02), 0 0 0 150px rgba(118, 85, 45, 0.015);
}

.page-hero .shell {
  position: relative;
}

.page-hero h1 {
  max-width: 880px;
  margin-bottom: 31px;
  font-size: clamp(3rem, 6.5vw, 5.8rem);
}

.page-hero .shell > p:last-child {
  max-width: 750px;
  margin-bottom: 0;
  color: var(--graphite);
  font-size: clamp(1rem, 1.7vw, 1.2rem);
}

.breadcrumbs {
  padding-top: 24px;
}

.breadcrumbs ol {
  display: flex;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 7px;
  color: var(--graphite);
  font-size: 0.71rem;
  list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
  margin-left: 7px;
  color: var(--bronze-dark);
  content: "/";
}

.breadcrumbs a {
  text-decoration: none;
}

.page-content > .section:first-child,
.page-content > .standard-meta:first-child {
  margin-top: clamp(68px, 9vw, 112px);
}

.metric-list {
  border-top: 1px solid var(--line);
}

.metric-list > div {
  display: grid;
  padding: 19px 0;
  grid-template-columns: 0.55fr 1fr;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.metric-list strong {
  font-family: var(--serif);
  font-size: 1.12rem;
}

.metric-list span {
  color: var(--graphite);
  font-size: 0.86rem;
}

.statement {
  padding-block: clamp(54px, 8vw, 88px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.statement p {
  max-width: 790px;
  margin: 0 auto;
  font-family: var(--serif);
  font-size: clamp(1.65rem, 3vw, 2.6rem);
  line-height: 1.3;
}

.two-cards,
.three-cards {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

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

.three-cards {
  grid-template-columns: repeat(3, 1fr);
}

.link-card,
.three-cards > article {
  padding: clamp(30px, 5vw, 52px);
  background: var(--paper);
}

.link-card {
  position: relative;
  min-height: 300px;
  text-decoration: none;
  transition: background 180ms ease;
}

.link-card:hover {
  background: var(--paper-light);
}

.link-card > span {
  display: block;
  margin-bottom: 58px;
  color: var(--bronze-dark);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.link-card h2 {
  margin-bottom: 17px;
  font-size: clamp(1.65rem, 3vw, 2.3rem);
}

.link-card p {
  max-width: 420px;
  margin-bottom: 0;
  color: var(--graphite);
  font-size: 0.87rem;
}

.link-card b {
  position: absolute;
  right: 34px;
  bottom: 30px;
  font-size: 1.2rem;
  font-weight: 400;
}

.three-cards > article {
  min-height: 285px;
}

.three-cards > article > span {
  margin-bottom: 64px;
}

.three-cards h2 {
  margin-bottom: 17px;
  font-size: clamp(1.55rem, 2.6vw, 2.2rem);
}

.three-cards p {
  margin-bottom: 0;
  color: var(--graphite);
  font-size: 0.86rem;
}

.application-preview {
  padding: clamp(40px, 7vw, 76px);
  background: var(--paper-light);
  border: 1px solid var(--line);
}

.category-picker {
  max-width: 680px;
  margin-inline: auto;
}

.category-picker > label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.78rem;
  font-weight: 750;
}

.category-picker select {
  width: 100%;
  min-height: 56px;
  padding: 12px 44px 12px 16px;
  color: var(--ink);
  background-color: var(--paper);
  border: 1px solid rgba(17, 28, 46, 0.28);
  border-radius: var(--radius);
}

.evidence-panel {
  min-height: 190px;
  margin-top: 18px;
  padding: 30px;
  color: var(--paper);
  background: var(--ink);
}

.evidence-panel p {
  margin-bottom: 16px;
  color: #d8b681;
  font-size: 0.69rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.evidence-panel ul {
  display: grid;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 28px;
  list-style: none;
}

.evidence-panel li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9rem;
}

.evidence-panel li::before {
  position: absolute;
  top: 0.75em;
  left: 0;
  width: 6px;
  height: 1px;
  background: var(--bronze);
  content: "";
}

.compact-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.compact-steps li {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.compact-steps span {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  color: var(--bronze-dark);
  border: 1px solid rgba(118, 85, 45, 0.4);
  border-radius: 50%;
  font-family: var(--serif);
  font-size: 0.76rem;
  font-style: italic;
}

.empty-state {
  padding: clamp(50px, 8vw, 90px);
  background: var(--paper-light);
  border: 1px solid var(--line);
  text-align: center;
}

.empty-state__mark {
  display: grid;
  width: 105px;
  height: 105px;
  margin: 0 auto 35px;
  place-items: center;
  border: 1px solid rgba(118, 85, 45, 0.34);
  border-radius: 50%;
  box-shadow: 0 0 0 9px rgba(177, 138, 86, 0.04), 0 0 0 18px rgba(177, 138, 86, 0.03);
}

.empty-state__mark span {
  width: 32px;
  height: 1px;
  background: var(--bronze-dark);
}

.empty-state h2 {
  margin-bottom: 20px;
}

.empty-state > p:not(.kicker) {
  max-width: 600px;
  margin: 0 auto 28px;
  color: var(--graphite);
}

.standard-meta {
  display: grid;
  margin-bottom: 0;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.standard-meta > div {
  padding: 24px;
  border-right: 1px solid var(--line);
}

.standard-meta > div:last-child {
  border-right: 0;
}

.standard-meta span,
.standard-meta strong {
  display: block;
}

.standard-meta span {
  margin-bottom: 10px;
  color: var(--graphite);
  font-size: 0.66rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.standard-meta strong {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 600;
}

.toc {
  padding: 36px;
  background: var(--paper-light);
  border: 1px solid var(--line);
}

.toc ol {
  display: grid;
  margin: 0;
  padding-left: 23px;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 45px;
}

.toc li {
  padding-left: 7px;
  color: var(--bronze-dark);
  font-family: var(--serif);
  font-style: italic;
}

.toc a {
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.86rem;
  font-style: normal;
  text-decoration: none;
}

.toc a:hover {
  text-decoration: underline;
}

.prose {
  font-family: var(--serif);
  font-size: 1.11rem;
  line-height: 1.76;
}

.prose > section,
.prose > h2,
.prose > h3,
.prose > p,
.prose > ul,
.prose > ol,
.prose > blockquote {
  max-width: 760px;
  margin-right: auto;
  margin-left: auto;
}

.standard-document > section {
  position: relative;
  padding-block: 58px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 105px;
}

.standard-document > section:last-child {
  border-bottom: 1px solid var(--line);
}

.standard-document h2,
.article-body h2,
.prose > h2 {
  margin-top: 0;
  margin-bottom: 25px;
  font-size: clamp(2rem, 3.5vw, 3rem);
}

.standard-document h3,
.article-body h3,
.prose > h3 {
  margin-top: 40px;
  margin-bottom: 15px;
  font-size: 1.45rem;
}

.standard-document li,
.prose > li {
  margin-bottom: 9px;
  padding-left: 7px;
}

.section-number {
  position: absolute;
  top: 66px;
  left: -70px;
  color: var(--bronze-dark);
  font-family: var(--serif);
  font-size: 0.8rem;
  font-style: italic;
}

.version-note,
.cta-band,
.origin-story,
.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1fr);
  gap: 60px;
  padding: clamp(35px, 6vw, 62px);
  background: var(--paper-light);
  border: 1px solid var(--line);
}

.version-note h2,
.cta-band h2,
.origin-story h2 {
  margin-bottom: 0;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.comparison-card {
  padding: clamp(30px, 5vw, 48px);
  background: var(--paper-light);
  border: 1px solid var(--line);
}

.comparison-card--yes {
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}

.comparison-card h3 {
  margin-bottom: 30px;
}

.comparison-card--yes h3 {
  color: var(--paper);
}

.comparison-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.comparison-card li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.comparison-card--yes li {
  border-color: var(--line-light);
}

.rule-spectrum {
  padding: clamp(40px, 7vw, 72px);
  background: var(--paper-light);
  border: 1px solid var(--line);
}

.spectrum {
  display: grid;
  position: relative;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.spectrum::before {
  position: absolute;
  top: 7px;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--line);
  content: "";
}

.spectrum > div {
  position: relative;
  padding-top: 42px;
}

.spectrum__dot {
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  width: 15px;
  height: 15px;
  background: var(--paper-light);
  border: 2px solid var(--bronze-dark);
  border-radius: 50%;
}

.spectrum > div:nth-child(2) .spectrum__dot {
  border-color: var(--warning);
}

.spectrum > div:nth-child(3) .spectrum__dot {
  border-color: var(--danger);
}

.spectrum h3 {
  min-height: 2.2em;
  margin-bottom: 18px;
}

.spectrum p {
  margin: 0;
  color: var(--graphite);
  font-size: 0.84rem;
}

.notice {
  padding: 30px 34px;
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-left: 3px solid var(--bronze-dark);
}

.notice__label {
  display: block;
  margin-bottom: 9px;
  color: var(--bronze-dark);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.notice p {
  margin: 0;
}

.notice--review {
  margin-bottom: -30px;
}

.checklist ol,
.checklist > ol {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.checklist li {
  display: grid;
  padding: 27px 0;
  grid-template-columns: 72px 1fr;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}

.checklist li > span {
  color: var(--bronze-dark);
  font-family: var(--serif);
  font-size: 0.85rem;
  font-style: italic;
}

.checklist h2,
.checklist h3 {
  margin-bottom: 10px;
  font-size: 1.4rem;
}

.checklist p {
  margin: 0;
  color: var(--graphite);
  font-size: 0.9rem;
}

.cta-band {
  align-items: center;
  grid-template-columns: minmax(0, 1fr) auto;
}

.origin-story {
  align-items: center;
}

.origin-word {
  display: grid;
  min-height: 250px;
  place-items: center;
  color: var(--bronze-dark);
  background: var(--paper-deep);
  font-family: var(--serif);
  font-size: clamp(3.8rem, 8vw, 6.5rem);
}

.values-grid,
.security-layers {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.values-grid article,
.security-layers article {
  min-height: 250px;
  padding: clamp(30px, 5vw, 50px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.values-grid h2,
.security-layers h2 {
  margin-bottom: 18px;
  font-size: clamp(1.65rem, 3vw, 2.3rem);
}

.values-grid p,
.security-layers p {
  margin: 0;
  color: var(--graphite);
}

.security-layers span {
  display: block;
  margin-bottom: 45px;
  color: var(--bronze-dark);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  display: flex;
  position: relative;
  min-height: 95px;
  align-items: center;
  justify-content: space-between;
  padding: 24px 65px 24px 0;
  cursor: pointer;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  font-weight: 600;
  line-height: 1.3;
  list-style: none;
}

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

.faq-list summary::before,
.faq-list summary::after {
  position: absolute;
  top: 50%;
  right: 16px;
  width: 18px;
  height: 1px;
  background: var(--ink);
  content: "";
}

.faq-list summary::after {
  transform: rotate(90deg);
  transition: transform 180ms ease;
}

.faq-list details[open] summary::after {
  transform: rotate(0);
}

.faq-list details > div {
  max-width: 700px;
  padding: 0 60px 28px 0;
  color: var(--graphite);
}

.contact-card {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.55fr);
}

.contact-card h2 {
  font-size: clamp(1.8rem, 4vw, 3.1rem);
}

.contact-rules {
  padding: 28px;
  background: var(--paper-deep);
}

.contact-rules h3 {
  margin-bottom: 22px;
  font-size: 1.2rem;
}

.contact-rules ul {
  margin: 0;
  padding-left: 20px;
  color: var(--graphite);
  font-size: 0.88rem;
}

.article-index {
  border-top: 1px solid var(--line);
}

.article-row {
  display: grid;
  position: relative;
  min-height: 260px;
  align-items: start;
  padding: 38px 0;
  grid-template-columns: 75px 1fr 40px;
  gap: 20px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.article-row__number {
  color: var(--bronze-dark);
  font-family: var(--serif);
  font-size: 0.82rem;
  font-style: italic;
}

.article-row h2 {
  margin-bottom: 17px;
  font-size: clamp(1.8rem, 3.7vw, 3rem);
}

.article-row p:last-child {
  max-width: 650px;
  margin-bottom: 0;
  color: var(--graphite);
  font-size: 0.9rem;
}

.article-row > b {
  align-self: center;
  font-size: 1.4rem;
  font-weight: 400;
  transition: transform 180ms ease;
}

.article-row:hover > b {
  transform: translateX(5px);
}

.topic-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  padding: clamp(38px, 6vw, 60px);
  background: var(--paper-light);
  border: 1px solid var(--line);
}

.topic-list h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.topic-list ul {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.topic-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.88rem;
}

.article-body {
  max-width: 760px;
  margin-inline: auto;
}

.article-body .lead {
  margin-bottom: 56px;
  font-size: clamp(1.35rem, 2.5vw, 1.8rem);
  line-height: 1.5;
}

.article-body h2 {
  margin-top: 58px;
}

.article-body blockquote {
  margin-block: 58px;
  padding: 35px 0 35px 38px;
  border-left: 2px solid var(--bronze-dark);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-style: italic;
  line-height: 1.4;
}

.verification-tools {
  border-top: 1px solid var(--line);
}

.verification-tool {
  display: grid;
  padding-block: clamp(45px, 7vw, 74px);
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 30px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 110px;
}

.verification-tool__number {
  color: var(--bronze-dark);
  font-family: var(--serif);
  font-size: 0.88rem;
  font-style: italic;
}

.verification-tool h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.verification-tool > div:last-child > p:not(.kicker) {
  max-width: 650px;
  color: var(--graphite);
}

.verification-tool .certificate-form {
  max-width: 650px;
  margin-top: 35px;
}

.file-verifier {
  max-width: 650px;
  margin-top: 35px;
}

.file-drop {
  display: flex;
  min-height: 230px;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  padding: 32px;
  background: var(--paper-light);
  border: 1px dashed rgba(17, 28, 46, 0.38);
  cursor: pointer;
  text-align: center;
  transition: background 180ms ease, border-color 180ms ease;
}

.file-drop:hover,
.file-drop.is-dragging {
  background: #fff;
  border-color: var(--bronze-dark);
}

.file-drop__icon {
  position: relative;
  width: 38px;
  height: 47px;
  margin-bottom: 20px;
  border: 1px solid var(--bronze-dark);
}

.file-drop__icon::before {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 13px;
  height: 13px;
  border-top: 1px solid var(--bronze-dark);
  border-left: 1px solid var(--bronze-dark);
  content: "";
  transform: translate(-50%, -30%) rotate(45deg);
}

.file-drop__icon::after {
  position: absolute;
  top: 42%;
  left: 50%;
  width: 1px;
  height: 20px;
  background: var(--bronze-dark);
  content: "";
  transform: translateX(-50%);
}

.file-drop strong,
.file-drop small {
  display: block;
}

.file-drop strong {
  font-family: var(--serif);
  font-size: 1.25rem;
}

.file-drop small {
  margin-top: 5px;
  color: var(--graphite);
}

.hash-progress,
.hash-result {
  margin-top: 15px;
  padding: 22px;
  background: var(--paper-light);
  border: 1px solid var(--line);
}

.hash-progress span {
  display: block;
  width: 100%;
  height: 2px;
  margin-bottom: 14px;
  overflow: hidden;
  background: var(--paper-deep);
}

.hash-progress span::after {
  display: block;
  width: 40%;
  height: 100%;
  background: var(--bronze-dark);
  content: "";
  animation: hash-progress 1.2s ease-in-out infinite alternate;
}

.hash-progress p,
.hash-result p {
  margin: 0;
  font-size: 0.84rem;
}

.hash-result code {
  display: block;
  margin-top: 13px;
  overflow-wrap: anywhere;
  color: var(--graphite);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.75rem;
}

.hash-result strong {
  display: block;
  margin-bottom: 7px;
  font-family: var(--serif);
  font-size: 1.2rem;
}

.hash-result[data-state="valid"] {
  border-left: 3px solid var(--success);
}

.hash-result[data-state="missing"] {
  border-left: 3px solid var(--bronze-dark);
}

.file-flow ol {
  display: grid;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(5, 1fr);
  list-style: none;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.file-flow li {
  min-height: 260px;
  padding: 28px 22px;
  border-right: 1px solid var(--line);
}

.file-flow li:last-child {
  border-right: 0;
}

.file-flow span {
  display: block;
  margin-bottom: 60px;
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 600;
}

.file-flow p {
  margin: 0;
  color: var(--graphite);
  font-size: 0.8rem;
}

.site-footer {
  padding-top: clamp(72px, 10vw, 120px);
  color: rgba(246, 244, 238, 0.7);
  background: #0b1422;
}

.site-footer__lead {
  display: grid;
  padding-bottom: clamp(58px, 8vw, 90px);
  grid-template-columns: 0.7fr 1fr;
  align-items: end;
  gap: 50px;
  border-bottom: 1px solid var(--line-light);
}

.wordmark--footer {
  color: var(--paper);
}

.site-footer__lead > p {
  max-width: 580px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.8vw, 2.2rem);
  line-height: 1.4;
}

.site-footer__nav {
  display: grid;
  padding-block: 62px;
  grid-template-columns: repeat(4, 1fr);
  gap: 35px;
}

.site-footer__nav h2 {
  margin-bottom: 24px;
  color: var(--paper);
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-footer__nav a {
  display: block;
  width: fit-content;
  margin: 8px 0;
  font-size: 0.78rem;
  text-decoration: none;
}

.site-footer__nav a:hover {
  color: var(--paper);
  text-decoration: underline;
}

.site-footer__base {
  display: flex;
  min-height: 90px;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  border-top: 1px solid var(--line-light);
  font-size: 0.68rem;
}

.site-footer__base p {
  margin: 0;
}

.site-footer__base > div {
  display: flex;
  gap: 22px;
}

.site-footer__base a {
  text-decoration: none;
}

@keyframes hash-progress {
  from { transform: translateX(-15%); }
  to { transform: translateX(165%); }
}

@media (max-width: 980px) {
  :root {
    --shell: min(100% - 36px, 1180px);
    --narrow: min(100% - 36px, 960px);
  }

  .menu-button {
    display: flex;
  }

  .site-navigation {
    position: fixed;
    z-index: 99;
    top: 88px;
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    visibility: hidden;
    align-items: stretch;
    padding: 30px 18px 45px;
    flex-direction: column;
    gap: 28px;
    color: var(--paper);
    background: var(--ink);
    opacity: 0;
    overflow-y: auto;
    transform: translateY(-12px);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms;
  }

  .site-navigation.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .site-navigation__links {
    align-items: stretch;
    flex-direction: column;
    gap: 0;
  }

  .site-navigation__links a {
    padding: 17px 4px;
    border-bottom: 1px solid var(--line-light);
    font-family: var(--serif);
    font-size: 1.45rem;
    font-weight: 500;
  }

  .site-navigation__links a::after {
    display: none;
  }

  .site-navigation .button {
    color: var(--ink);
    background: var(--paper);
    border-color: var(--paper);
  }

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

  .evidence-chain > div:nth-child(2),
  .process-grid > li:nth-child(2) {
    border-right: 0;
  }

  .evidence-chain > div:nth-child(-n + 2),
  .process-grid > li:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

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

  .certificate-story {
    grid-template-columns: 1fr;
  }

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

  .article-card {
    min-height: 280px;
  }

  .article-card > span {
    margin-bottom: 40px;
  }

  .file-flow ol {
    grid-template-columns: repeat(2, 1fr);
    border-left: 1px solid var(--line);
  }

  .file-flow li {
    min-height: 220px;
    border-bottom: 1px solid var(--line);
  }

  .file-flow li:nth-child(even) {
    border-right: 0;
  }

  .file-flow li:last-child {
    border-right: 1px solid var(--line);
  }
}

@media (max-width: 700px) {
  :root {
    --shell: min(100% - 28px, 1180px);
    --narrow: min(100% - 28px, 960px);
  }

  body {
    font-size: 16px;
  }

  .site-header,
  .site-header__inner {
    min-height: 76px;
  }

  .site-navigation {
    top: 76px;
  }

  .wordmark span {
    font-size: 1.2rem;
  }

  .wordmark small {
    margin-top: 6px;
    font-size: 0.48rem;
  }

  .home-hero,
  .home-hero__inner {
    min-height: calc(100svh - 76px);
  }

  .home-hero__inner {
    padding-block: 45px 90px;
  }

  .status-line {
    gap: 7px;
    margin-bottom: 42px;
    font-size: 0.56rem;
  }

  .hero-wordmark {
    font-size: clamp(2.5rem, 13vw, 4.2rem);
    letter-spacing: 0.16em;
    text-indent: 0.16em;
  }

  .hero-claim {
    margin: 17px 0 35px;
    font-size: 0.57rem;
    letter-spacing: 0.24em;
    text-indent: 0.24em;
  }

  .home-hero h1 {
    font-size: clamp(2.45rem, 12vw, 4rem);
  }

  .home-hero__intro {
    font-size: 0.98rem;
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .hero-verification {
    margin-top: 44px;
  }

  .field-action {
    grid-template-columns: 1fr;
    gap: 9px;
  }

  .field-action input {
    border: 1px solid var(--line);
    border-radius: var(--radius);
  }

  .field-action .button {
    width: 100%;
    border-radius: var(--radius);
  }

  .evidence-chain,
  .process-grid,
  .category-grid,
  .two-cards,
  .three-cards,
  .standard-meta,
  .comparison-grid,
  .spectrum,
  .values-grid,
  .security-layers,
  .topic-list,
  .site-footer__lead,
  .site-footer__nav,
  .version-note,
  .origin-story,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .evidence-chain > div,
  .process-grid > li,
  .evidence-chain > div:nth-child(2),
  .process-grid > li:nth-child(2) {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .evidence-chain > div:last-child,
  .process-grid > li:last-child {
    border-bottom: 0;
  }

  .evidence-chain span,
  .process-grid > li > span,
  .three-cards > article > span {
    margin-bottom: 36px;
  }

  .category-grid {
    border-left: 0;
  }

  .category-grid article {
    min-height: 165px;
    border-right: 0;
  }

  .split,
  .split--wide {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .certificate-preview {
    padding: 28px;
  }

  .certificate-preview__foot {
    right: 28px;
    bottom: 27px;
    left: 28px;
  }

  .certificate-preview__top small,
  .certificate-preview__foot span:nth-child(2) {
    display: none;
  }

  .launch-panel,
  .cta-band {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .launch-panel .button,
  .cta-band .button {
    width: 100%;
  }

  .page-hero {
    padding-block: 76px 72px;
  }

  .page-hero h1 {
    font-size: clamp(2.6rem, 12vw, 4rem);
  }

  .metric-list > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .link-card,
  .three-cards > article {
    min-height: auto;
  }

  .link-card > span {
    margin-bottom: 40px;
  }

  .link-card b {
    position: static;
    display: block;
    margin-top: 28px;
  }

  .standard-meta > div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .standard-meta > div:last-child {
    border-bottom: 0;
  }

  .toc ol {
    grid-template-columns: 1fr;
  }

  .section-number {
    position: static;
    margin-bottom: 18px;
  }

  .spectrum {
    gap: 0;
  }

  .spectrum::before {
    top: 0;
    right: auto;
    bottom: 0;
    left: 7px;
    width: 1px;
    height: auto;
  }

  .spectrum > div {
    padding: 0 0 38px 40px;
  }

  .spectrum__dot {
    top: 5px;
  }

  .spectrum h3 {
    min-height: 0;
  }

  .evidence-panel ul {
    grid-template-columns: 1fr;
  }

  .verification-tool {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .article-row {
    min-height: 0;
    grid-template-columns: 45px 1fr;
  }

  .article-row > b {
    display: none;
  }

  .topic-list {
    gap: 20px;
  }

  .file-flow ol {
    grid-template-columns: 1fr;
  }

  .file-flow li,
  .file-flow li:nth-child(even),
  .file-flow li:last-child {
    min-height: auto;
    border-right: 1px solid var(--line);
  }

  .file-flow span {
    margin-bottom: 25px;
  }

  .site-footer__lead {
    align-items: start;
    gap: 40px;
  }

  .site-footer__nav {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 45px;
  }

  .site-footer__base {
    align-items: flex-start;
    padding-block: 28px;
    flex-direction: column;
  }

  .site-footer__base > div {
    flex-wrap: wrap;
  }
}

@media (max-width: 420px) {
  .site-footer__nav {
    grid-template-columns: 1fr;
  }

  .status-line b,
  .status-line b + * {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .site-header,
  .site-footer,
  .breadcrumbs,
  .button,
  .hero-actions {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
    font-size: 12pt;
  }

  .page-hero {
    padding: 0 0 30px;
    background: #fff;
  }

  .page-content,
  .shell,
  .shell--narrow {
    width: 100%;
  }
}