@font-face {
  font-family: "Inter";
  src: url("/assets/inter-cyrillic.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
  font-family: "Inter";
  src: url("/assets/inter-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --ink: #10213d;
  --ink-2: #263851;
  --muted: #526176;
  --muted-2: #56667b;
  --blue: #326fcf;
  --blue-dark: #2659aa;
  --blue-soft: #edf4ff;
  --paper: #f6f8fb;
  --paper-2: #eef2f7;
  --line: #dce3eb;
  --line-dark: #cbd5e1;
  --white: #ffffff;
  --green: #1c7a58;
  --green-soft: #e6f5ee;
  --red: #a53d46;
  --red-soft: #fbecef;
  --shell: 1180px;
  --narrow: 780px;
  --gutter: 24px;
  --shadow: 0 24px 58px rgba(16, 33, 61, 0.12);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

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

h1,
h2,
h3,
p,
ul,
ol,
dl,
dd,
figure {
  margin-top: 0;
}

h1,
h2,
h3,
strong,
b {
  color: var(--ink);
}

h1,
h2,
h3 {
  text-wrap: balance;
}

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

.shell-narrow {
  width: min(var(--narrow), calc(100% - (var(--gutter) * 2)));
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  transform: translateY(-160%);
  border-radius: 8px;
  color: var(--white);
  background: var(--ink);
  padding: 10px 14px;
  font-weight: 750;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(220, 227, 235, 0.92);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
}

.site-header-inner {
  width: min(var(--shell), calc(100% - (var(--gutter) * 2)));
  min-height: 76px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(190px, 1fr) auto minmax(220px, 1fr);
  align-items: center;
  gap: 24px;
}

.site-logo-link {
  width: max-content;
  display: inline-flex;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.site-brand-mark {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: grid;
  place-items: center;
}

.site-brand-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.site-wordmark {
  display: grid;
  gap: 0;
  font-size: 0.86rem;
  font-weight: 760;
  line-height: 1.02;
  letter-spacing: -0.025em;
}

.site-wordmark b {
  color: var(--ink);
}

.site-wordmark span {
  color: var(--blue);
  font-weight: 760;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  border-radius: 8px;
  color: #46566b;
  padding: 10px 11px;
  font-size: 0.82rem;
  font-weight: 700;
  transition: color 140ms ease, background 140ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--blue-dark);
  background: var(--blue-soft);
}

.site-header-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 13px;
}

.site-header-inner > .site-login-link-mobile {
  display: none;
}

.text-link {
  color: #46566b;
  font-size: 0.82rem;
  font-weight: 730;
}

.text-link:hover,
.arrow-link:hover,
.footer-email:hover,
.site-footer-column a:hover {
  color: var(--blue-dark);
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-dark);
  border-radius: 10px;
  padding: 0 20px;
  font-size: 0.88rem;
  font-weight: 790;
  line-height: 1.2;
  transition: transform 140ms ease, background 140ms ease, border-color 140ms ease, color 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-small {
  min-height: 42px;
  padding-inline: 15px;
  font-size: 0.8rem;
}

.button-primary {
  border-color: var(--blue);
  color: var(--white);
  background: var(--blue);
}

.button-primary:hover {
  border-color: var(--blue-dark);
  color: var(--white);
  background: var(--blue-dark);
}

.button-secondary {
  color: var(--ink);
  background: var(--white);
}

.button-secondary:hover {
  border-color: #aab8ca;
  background: var(--paper);
}

.mobile-menu {
  display: none;
}

.eyebrow {
  margin-bottom: 13px;
  color: var(--blue-dark);
  font-size: 0.72rem;
  font-weight: 830;
  letter-spacing: 0.075em;
  line-height: 1.2;
  text-transform: uppercase;
}

.home-hero {
  border-bottom: 1px solid var(--line);
}

.home-hero-clean {
  min-height: 650px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 94px;
  padding-bottom: 74px;
}

.home-hero h1 {
  max-width: 1100px;
  margin-bottom: 0;
  font-size: clamp(4rem, 7.25vw, 6.35rem);
  line-height: 0.94;
  letter-spacing: -0.064em;
}

.home-lead,
.page-lead {
  max-width: 690px;
  color: var(--muted);
  font-size: clamp(1.04rem, 1.6vw, 1.18rem);
  line-height: 1.72;
}

.home-lead {
  margin: 0;
}

.home-hero-bottom {
  display: grid;
  grid-template-columns: minmax(0, 640px) auto;
  align-items: end;
  justify-content: space-between;
  gap: 48px;
  margin-top: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
}

.hero-audience {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 46px 0 0;
  padding: 21px 0 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 650;
  list-style: none;
}

.hero-audience li::before {
  content: "";
  width: 6px;
  height: 6px;
  display: inline-block;
  margin: 0 8px 1px 0;
  border-radius: 50%;
  background: var(--blue);
}

.proof-band {
  background: var(--paper);
}

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

.proof-band article {
  display: grid;
  gap: 5px;
  padding: 27px 28px;
  border-right: 1px solid var(--line);
}

.proof-band article:first-child {
  padding-left: 0;
}

.proof-band article:last-child {
  border-right: 0;
}

.proof-band strong {
  font-size: 1.05rem;
}

.proof-band span {
  color: var(--muted);
  font-size: 0.78rem;
}

.section {
  padding-top: 92px;
  padding-bottom: 92px;
}

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

.section-bordered {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-dark {
  color: #e4ebf5;
  background: var(--ink);
}

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

.section-dark .eyebrow {
  color: #9fc3fb;
}

.section-dark .section-heading > p:last-child,
.section-dark p,
.section-dark dd,
.section-dark small {
  color: #c9d4e3 !important;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-heading h2,
.cta-section h2,
.split-intro h2,
.technical-split h2,
.security-callout h2,
.method-boundary h2,
.metric-warning h2,
.solution-workflow h2,
.solution-outcome h2,
.isolation-diagram h2,
.security-release h2,
.about-evidence h2 {
  margin-bottom: 15px;
  font-size: clamp(2.2rem, 4.2vw, 3.45rem);
  line-height: 1.06;
  letter-spacing: -0.044em;
}

.section-heading > p:last-child,
.split-intro > div:first-child > p:last-child,
.technical-split > div:first-child > p,
.security-callout > div:first-child > p:last-child,
.solution-workflow > div:first-child > p:last-child,
.isolation-diagram > div:first-child > p:last-child,
.about-evidence > div:last-child p {
  color: var(--muted);
  font-size: 0.99rem;
  line-height: 1.72;
}

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

.task-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.task-card {
  min-width: 0;
  min-height: 270px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 25px;
}

.card-index,
.task-card > span,
.layer-grid article > span,
.use-case-grid article > span,
.security-level-grid article > span,
.about-principles article > span {
  color: var(--blue-dark);
  font-size: 0.68rem;
  font-weight: 830;
  letter-spacing: 0.07em;
}

.task-card h3 {
  margin: 36px 0 10px;
  font-size: 1.15rem;
  line-height: 1.3;
}

.task-card p {
  flex: 1;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 0.87rem;
  line-height: 1.65;
}

.task-card a {
  color: var(--blue-dark);
  font-size: 0.78rem;
  font-weight: 760;
}

.task-card:hover {
  background: #fbfcfe;
}

.split-intro,
.technical-split,
.metrics-intro-grid,
.role-outcome,
.method-boundary,
.method-checklist,
.metric-warning,
.editorial-plan,
.isolation-diagram,
.security-release,
.about-evidence {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(46px, 7vw, 92px);
  align-items: start;
}

.direction-list {
  display: grid;
  border-top: 1px solid var(--line-dark);
}

.direction-list a {
  min-width: 0;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 21px 0;
  border-bottom: 1px solid var(--line-dark);
}

.direction-list a > span {
  color: var(--blue-dark);
  font-size: 0.7rem;
  font-weight: 820;
}

.direction-list a > div {
  display: grid;
  gap: 5px;
}

.direction-list strong {
  font-size: 0.98rem;
}

.direction-list small {
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.45;
}

.direction-list em {
  color: var(--blue-dark);
  font-size: 1.1rem;
  font-style: normal;
}

.direction-list a:hover strong {
  color: var(--blue-dark);
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line);
  list-style: none;
}

.workflow-grid li {
  min-height: 225px;
  background: var(--white);
  padding: 24px;
}

.workflow-grid li > span {
  color: var(--blue-dark);
  font-size: 0.68rem;
  font-weight: 830;
}

.workflow-grid h3 {
  margin: 48px 0 9px;
  font-size: 1rem;
}

.workflow-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.section-link-row {
  margin-top: 26px;
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--blue-dark);
  font-size: 0.82rem;
  font-weight: 780;
}

.arrow-link span {
  transition: transform 140ms ease;
}

.arrow-link:hover span {
  transform: translateX(3px);
}

.example-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.example-preview {
  min-width: 0;
  border: 1px solid rgba(203, 213, 225, 0.2);
  background: rgba(255, 255, 255, 0.055);
  padding: 26px;
}

.example-preview-head > span {
  color: #9fc3fb;
  font-size: 0.68rem;
  font-weight: 790;
}

.example-preview h3 {
  margin: 11px 0 5px;
  font-size: 1.3rem;
}

.example-preview-head p {
  margin-bottom: 0;
  font-size: 0.76rem;
}

.example-preview-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 24px 0 20px;
  border-top: 1px solid rgba(203, 213, 225, 0.18);
  border-bottom: 1px solid rgba(203, 213, 225, 0.18);
}

.example-preview-metrics > div {
  display: grid;
  gap: 4px;
  padding: 18px 16px 18px 0;
}

.example-preview-metrics > div + div {
  border-left: 1px solid rgba(203, 213, 225, 0.18);
  padding-left: 16px;
}

.example-preview-metrics strong {
  font-size: 1.72rem;
}

.example-preview-metrics span {
  color: #bdc8d8;
  font-size: 0.7rem;
}

.example-preview > p {
  min-height: 76px;
  margin-bottom: 22px;
  font-size: 0.82rem;
  line-height: 1.62;
}

.section-dark .arrow-link {
  color: #a8c9fb;
}

.metrics-intro-grid > div:first-child .button {
  margin-top: 8px;
}

.metric-definition-list {
  margin-bottom: 0;
  border-top: 1px solid var(--line);
}

.metric-definition-list > div {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 22px;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
}

.metric-definition-list dt {
  font-size: 0.84rem;
  font-weight: 790;
}

.metric-definition-list dd {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.technical-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.technical-points article {
  min-height: 168px;
  background: var(--white);
  padding: 22px;
}

.technical-points strong {
  font-size: 0.86rem;
}

.technical-points p {
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.58;
}

.security-callout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(350px, 0.8fr);
  align-items: center;
  gap: clamp(48px, 7vw, 84px);
  margin-top: 96px;
  margin-bottom: 96px;
  border-radius: 26px;
  color: #f7f9fc;
  background: #142846;
  box-shadow: 0 30px 70px rgba(16, 33, 61, 0.2);
  padding: clamp(34px, 5vw, 50px);
}

.security-callout .eyebrow {
  width: max-content;
  margin-bottom: 18px;
  border-radius: 999px;
  color: #c9ddfc;
  background: rgba(50, 111, 207, 0.24);
  padding: 8px 11px;
}

.security-callout h2 {
  max-width: 690px;
  margin-bottom: 17px;
  color: var(--white);
}

.security-callout > div:first-child > p:last-child {
  max-width: 670px;
  color: #c4cfdd;
}

.security-checks {
  display: grid;
  gap: 10px;
}

.security-checks > div {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  min-height: 64px;
  border: 1px solid rgba(201, 221, 252, 0.16);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.055);
  padding: 11px 13px;
}

.security-checks > div > span {
  color: #eef3fa;
  font-size: 0.8rem;
  line-height: 1.45;
}

.security-checks > a {
  width: max-content;
  margin-top: 7px;
  color: #a9cafb;
}

.security-lock {
  position: relative;
  width: 34px;
  height: 34px;
  display: block;
  border-radius: 9px;
  background: rgba(50, 111, 207, 0.22);
}

.security-lock::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 11px;
  width: 12px;
  height: 10px;
  border: 1.5px solid #8bb8f8;
  border-radius: 2px;
}

.security-lock::after {
  content: "";
  position: absolute;
  top: 8px;
  left: 12px;
  width: 10px;
  height: 9px;
  border: 1.5px solid #8bb8f8;
  border-bottom: 0;
  border-radius: 7px 7px 0 0;
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.material-card {
  min-width: 0;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid var(--line);
  background: var(--white);
  padding: 24px;
}

.material-card-meta {
  width: 100%;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 720;
}

.material-card-meta span:first-child {
  color: var(--blue-dark);
}

.material-card h3 {
  margin: 44px 0 11px;
  font-size: 1.2rem;
  line-height: 1.32;
}

.material-card h3 a:hover {
  color: var(--blue-dark);
}

.material-card p {
  flex: 1;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.64;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 21px;
  color: var(--muted-2);
  font-size: 0.7rem;
}

.breadcrumbs a:hover {
  color: var(--blue-dark);
}

.breadcrumb-separator {
  color: var(--muted-2);
}

.page-hero {
  border-bottom: 1px solid var(--line);
}

.page-hero-grid {
  min-height: 560px;
  display: grid;
  align-items: center;
  padding-top: 70px;
  padding-bottom: 82px;
}

.page-hero-grid.has-aside {
  grid-template-columns: minmax(0, 1.05fr) minmax(350px, 0.62fr);
  gap: clamp(50px, 8vw, 108px);
}

.page-hero-copy h1 {
  max-width: 860px;
  margin-bottom: 23px;
  font-size: clamp(3rem, 5.4vw, 4.75rem);
  line-height: 1;
  letter-spacing: -0.055em;
}

.page-hero-copy .page-lead {
  margin-bottom: 28px;
}

.page-hero-aside {
  min-width: 0;
}

.hero-summary,
.security-shield {
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line-dark);
  padding: 22px 0;
}

.hero-summary > span,
.security-shield > span {
  color: var(--blue-dark);
  font-size: 0.7rem;
  font-weight: 810;
}

.hero-summary ul,
.hero-summary ol,
.security-shield ul {
  display: grid;
  gap: 0;
  margin: 17px 0 0;
  padding: 0;
  list-style: none;
}

.hero-summary li,
.security-shield li {
  padding: 12px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 0.8rem;
  font-weight: 680;
}

.hero-summary li::before,
.security-shield li::before {
  content: "✓";
  margin-right: 9px;
  color: var(--green);
  font-weight: 850;
}

.capability-list {
  padding-top: 36px;
}

.capability-row {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) minmax(240px, 0.38fr);
  gap: clamp(28px, 5vw, 62px);
  padding: 70px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 90px;
}

.capability-number {
  color: var(--blue-dark);
  font-size: 0.72rem;
  font-weight: 850;
}

.capability-copy h2,
.solution-card h2,
.method-steps h2,
.example-detail h2,
.security-principles .section-heading h2,
.about-principles .section-heading h2 {
  margin-bottom: 16px;
  font-size: clamp(1.8rem, 3.3vw, 2.7rem);
  line-height: 1.08;
  letter-spacing: -0.037em;
}

.capability-copy > p:last-of-type,
.solution-card > p,
.method-steps article > div > p,
.capability-row aside p {
  color: var(--muted);
  line-height: 1.7;
}

.capability-copy ul,
.solution-card ul,
.method-steps ul {
  display: grid;
  gap: 9px;
  margin: 24px 0 0;
  padding: 0;
  color: var(--ink-2);
  font-size: 0.84rem;
  line-height: 1.55;
  list-style: none;
}

.capability-copy li,
.solution-card li,
.method-steps li {
  position: relative;
  padding-left: 18px;
}

.capability-copy li::before,
.solution-card li::before,
.method-steps li::before {
  content: "";
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
}

.capability-row aside {
  align-self: start;
  border-top: 2px solid var(--blue);
  background: var(--paper);
  padding: 18px;
}

.capability-row aside strong {
  font-size: 0.76rem;
}

.capability-row aside p {
  margin: 14px 0 0;
  font-size: 0.76rem;
}

.layer-grid,
.use-case-grid,
.security-level-grid,
.about-principles > div {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.layer-grid article,
.use-case-grid article,
.security-level-grid article,
.about-principles article {
  min-height: 220px;
  background: var(--white);
  padding: 23px;
}

.layer-grid h3,
.use-case-grid h3,
.security-level-grid h3,
.about-principles h3 {
  margin: 44px 0 9px;
  font-size: 1rem;
}

.layer-grid p,
.use-case-grid p,
.security-level-grid p,
.about-principles p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.6;
}

.boundary-grid,
.content-principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.boundary-grid article,
.content-principles article {
  border-top: 2px solid var(--ink);
  padding: 20px 2px 0;
}

.boundary-grid h3,
.content-principles h3 {
  margin-bottom: 9px;
  font-size: 1rem;
}

.boundary-grid p,
.content-principles p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.62;
}

.solution-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.solution-card {
  min-height: 310px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid var(--line);
  padding: 26px;
}

.solution-card-large {
  min-height: 430px;
  grid-column: span 3;
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  column-gap: 70px;
}

.solution-card-large .eyebrow,
.solution-card-large h2,
.solution-card-large > p {
  grid-column: 1;
}

.solution-card-large ul,
.solution-card-large .arrow-link {
  grid-column: 2;
}

.solution-card-large ul {
  grid-row: 1 / span 3;
  margin-top: 0;
  padding-top: 10px;
}

.solution-card .arrow-link {
  margin-top: auto;
  padding-top: 22px;
}

.role-outcome dl {
  margin: 0;
  border-top: 1px solid rgba(203, 213, 225, 0.2);
}

.role-outcome dl > div {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 20px;
  padding: 19px 0;
  border-bottom: 1px solid rgba(203, 213, 225, 0.2);
}

.role-outcome dt {
  font-size: 0.82rem;
  font-weight: 760;
}

.role-outcome dd {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.55;
}

.result-stack {
  display: grid;
  gap: 1px;
  background: var(--line);
}

.result-stack article {
  display: grid;
  grid-template-columns: 92px minmax(0, 0.45fr) minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  background: var(--white);
  padding: 20px;
}

.result-stack span {
  color: var(--blue-dark);
  font-size: 0.68rem;
  font-weight: 800;
}

.result-stack strong {
  font-size: 0.84rem;
}

.result-stack p {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.two-column-copy {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 80px;
}

.two-column-copy > div:first-child > p:last-of-type {
  color: var(--muted);
  line-height: 1.7;
}

.note-box {
  border-top: 2px solid var(--ink);
  background: var(--paper);
  padding: 20px;
}

.note-box + .note-box {
  margin-top: 13px;
}

.note-box strong {
  font-size: 0.82rem;
}

.note-box p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.62;
}

.note-blue {
  border-top-color: var(--blue);
  background: var(--blue-soft);
}

.solution-outcome {
  max-width: 900px;
}

.solution-outcome > div {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 28px;
}

.solution-outcome > div span {
  border: 1px solid rgba(203, 213, 225, 0.23);
  color: #d9e4f2;
  padding: 10px 12px;
  font-size: 0.74rem;
}

.method-formula {
  display: grid;
  grid-template-columns: 1fr auto;
  border-top: 2px solid var(--ink);
}

.method-formula span,
.method-formula b {
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.78rem;
}

.method-formula b {
  color: var(--blue-dark);
}

.method-steps {
  padding-top: 30px;
}

.method-steps > article {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 28px;
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}

.method-steps > article > span {
  color: var(--blue-dark);
  font-size: 0.72rem;
  font-weight: 850;
}

.method-steps article > div {
  max-width: 780px;
}

.method-boundary {
  align-items: center;
}

.method-boundary > div:last-child p {
  font-size: 0.9rem;
  line-height: 1.72;
}

.method-checklist {
  align-items: start;
}

.method-checklist ol,
.security-release ol,
.editorial-plan ol,
.evidence-principles ol {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.method-checklist li,
.security-release li,
.editorial-plan li,
.evidence-principles li {
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 0.84rem;
  line-height: 1.55;
}

.method-checklist li {
  counter-increment: checklist;
}

.method-checklist ol {
  counter-reset: checklist;
}

.method-checklist li::before {
  content: counter(checklist, decimal-leading-zero);
  display: inline-block;
  width: 38px;
  color: var(--blue-dark);
  font-size: 0.68rem;
  font-weight: 820;
}

.metric-catalog {
  padding-top: 34px;
}

.metric-catalog > article {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr);
  gap: 25px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.metric-catalog > article > span {
  color: var(--blue-dark);
  font-size: 0.7rem;
  font-weight: 840;
}

.metric-catalog h2 {
  margin-bottom: 9px;
  font-size: 1.35rem;
}

.metric-catalog p {
  margin-bottom: 7px;
  color: var(--ink-2);
  line-height: 1.65;
}

.metric-catalog small {
  color: var(--muted);
  font-size: 0.76rem;
}

.combination-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.combination-grid article {
  min-height: 210px;
  background: var(--white);
  padding: 23px;
}

.combination-grid h3 {
  margin-bottom: 42px;
  font-size: 1rem;
}

.combination-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.62;
}

.metric-warning {
  align-items: start;
}

.metric-warning ul {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.metric-warning li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.65;
}

.metric-warning li strong {
  color: var(--ink);
}

.example-detail-list {
  padding-top: 30px;
}

.example-detail {
  display: grid;
  grid-template-columns: minmax(210px, 0.36fr) minmax(0, 1fr);
  gap: 60px;
  padding: 66px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 90px;
}

.example-detail-side {
  display: grid;
  align-content: start;
  gap: 9px;
}

.example-detail-side > span {
  color: var(--blue-dark);
  font-size: 0.7rem;
  font-weight: 820;
}

.example-detail-side strong {
  font-size: 0.82rem;
}

.example-detail-side small {
  color: var(--muted);
  font-size: 0.72rem;
}

.example-detail-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 23px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.example-detail-metrics > div {
  display: grid;
  gap: 5px;
  padding: 20px 20px 20px 0;
}

.example-detail-metrics > div + div {
  border-left: 1px solid var(--line);
  padding-left: 20px;
}

.example-detail-metrics strong {
  font-size: 2rem;
  letter-spacing: -0.04em;
}

.example-detail-metrics span {
  color: var(--muted);
  font-size: 0.72rem;
}

.example-detail dl {
  margin: 0;
}

.example-detail dl > div {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.example-detail dt {
  font-size: 0.78rem;
  font-weight: 780;
}

.example-detail dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.62;
}

.evidence-principles {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 80px;
}

.evidence-principles ol {
  border-color: rgba(203, 213, 225, 0.2);
}

.evidence-principles li {
  border-color: rgba(203, 213, 225, 0.2);
  color: #d1dbe8;
}

.editorial-plan {
  align-items: start;
}

.editorial-plan li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
}

.editorial-plan li span {
  color: var(--blue-dark);
  font-size: 0.68rem;
  font-weight: 820;
}

.article-page {
  padding-bottom: 70px;
}

.article-header {
  padding-top: 76px;
  padding-bottom: 66px;
  text-align: center;
}

.article-header h1 {
  margin-bottom: 22px;
  font-size: clamp(3rem, 5.5vw, 4.7rem);
  line-height: 1;
  letter-spacing: -0.055em;
}

.article-lead {
  color: var(--muted);
  font-size: 1.14rem;
  line-height: 1.72;
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-top: 27px;
  color: var(--muted-2);
  font-size: 0.7rem;
}

.article-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 720px);
  justify-content: center;
  gap: 66px;
  align-items: start;
}

.article-toc {
  position: sticky;
  top: 106px;
  border-top: 2px solid var(--ink);
  padding-top: 17px;
}

.article-toc > strong {
  font-size: 0.76rem;
}

.article-toc ol {
  display: grid;
  gap: 0;
  margin: 12px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.article-toc li {
  border-bottom: 1px solid var(--line);
}

.article-toc a {
  display: block;
  padding: 11px 0;
  color: var(--muted);
  font-size: 0.7rem;
  line-height: 1.45;
}

.article-toc a:hover {
  color: var(--blue-dark);
}

.article-content {
  min-width: 0;
}

.article-intro {
  margin-bottom: 52px;
  color: var(--ink-2);
  font-size: 1.16rem;
  line-height: 1.78;
}

.article-content section {
  scroll-margin-top: 110px;
  margin-bottom: 48px;
}

.article-content h2 {
  margin-bottom: 17px;
  font-size: 1.75rem;
  line-height: 1.18;
  letter-spacing: -0.03em;
}

.article-content p,
.article-content li {
  color: #394a61;
  font-size: 0.96rem;
  line-height: 1.82;
}

.article-content ul {
  display: grid;
  gap: 8px;
  margin: 18px 0 22px;
  padding-left: 22px;
}

.article-content .note-box {
  margin-top: 56px;
}

.security-shield strong {
  display: block;
  margin-top: 10px;
  font-size: 1.35rem;
}

.security-level-grid article {
  min-height: 250px;
}

.diagram {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  align-items: center;
}

.diagram article {
  min-width: 0;
  border: 1px solid rgba(203, 213, 225, 0.22);
  padding: 22px;
}

.diagram article span {
  color: #9fc3fb;
  font-size: 0.68rem;
  font-weight: 780;
}

.diagram article strong {
  display: block;
  margin: 10px 0 7px;
  overflow-wrap: anywhere;
  font-size: 1rem;
}

.diagram article p {
  margin: 0;
  font-size: 0.74rem;
}

.diagram > i {
  height: 1px;
  display: block;
  background: rgba(203, 213, 225, 0.36);
}

.security-do-dont {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 70px;
}

.security-do-dont h2 {
  margin-bottom: 23px;
  font-size: 1.7rem;
}

.check-list,
.cross-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.check-list li,
.cross-list li {
  position: relative;
  padding: 15px 0 15px 28px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.check-list li::before,
.cross-list li::before {
  position: absolute;
  top: 15px;
  left: 0;
  font-weight: 850;
}

.check-list li::before {
  content: "✓";
  color: var(--green);
}

.cross-list li::before {
  content: "×";
  color: var(--red);
}

.security-release ol {
  counter-reset: release;
}

.security-release li {
  counter-increment: release;
}

.security-release li::before {
  content: counter(release, decimal-leading-zero);
  display: inline-block;
  width: 40px;
  color: var(--blue-dark);
  font-size: 0.68rem;
  font-weight: 820;
}

.platform-map {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 80px;
}

.platform-map > div:first-child > p:last-child {
  color: var(--muted);
  line-height: 1.7;
}

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

.platform-map li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 15px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}

.platform-map li > span {
  color: var(--blue-dark);
  font-size: 0.68rem;
  font-weight: 820;
}

.platform-map li div {
  display: grid;
  gap: 4px;
}

.platform-map li strong {
  font-size: 0.84rem;
}

.platform-map li p {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.cta-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 50px;
  margin-top: 30px;
  margin-bottom: 30px;
  border: 1px solid #cad8ea;
  background: var(--blue-soft);
  padding: 38px 40px;
}

.cta-section > div:first-child {
  max-width: 760px;
}

.cta-section h2 {
  margin-bottom: 10px;
  font-size: clamp(1.8rem, 3.4vw, 2.65rem);
}

.cta-section > div:first-child > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.65;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.site-footer {
  margin-top: 88px;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.site-footer-main {
  display: grid;
  grid-template-columns: minmax(260px, 1.25fr) repeat(3, minmax(150px, 0.75fr));
  gap: 46px;
  padding-top: 54px;
  padding-bottom: 48px;
}

.site-footer-about p {
  max-width: 340px;
  margin: 21px 0 13px;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.62;
}

.site-brand-footer .site-brand-mark {
  width: 38px;
  height: 38px;
  flex-basis: 38px;
}

.site-brand-footer .site-wordmark {
  font-size: 0.78rem;
}

.footer-email {
  color: var(--blue-dark);
  font-size: 0.76rem;
  font-weight: 720;
}

.site-footer-column {
  display: grid;
  align-content: start;
  gap: 10px;
}

.site-footer-column strong {
  margin-bottom: 7px;
  font-size: 0.76rem;
}

.site-footer-column a {
  color: var(--muted);
  font-size: 0.72rem;
}

.site-footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 18px;
  padding-bottom: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted-2);
  font-size: 0.66rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 20px 0 22px;
}

.tag-list span {
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  color: var(--muted);
  background: var(--paper);
  padding: 5px 8px;
  font-size: 0.62rem;
  font-weight: 690;
  line-height: 1.2;
}

.tag-list-centered {
  justify-content: center;
  margin-top: 18px;
  margin-bottom: 0;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

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

.knowledge-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.knowledge-jump a {
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  color: var(--ink-2);
  background: var(--white);
  padding: 8px 12px;
  font-size: 0.72rem;
  font-weight: 720;
}

.knowledge-jump a:hover {
  border-color: var(--blue);
  color: var(--blue-dark);
  background: var(--blue-soft);
}

.knowledge-card {
  min-width: 0;
  min-height: 360px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid var(--line);
  background: var(--white);
  padding: 25px;
}

.knowledge-card-meta {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted-2);
  font-size: 0.66rem;
  font-weight: 720;
}

.knowledge-card-meta span:first-child {
  color: var(--blue-dark);
}

.knowledge-card h3 {
  margin: 44px 0 12px;
  font-size: 1.2rem;
  line-height: 1.3;
  letter-spacing: -0.025em;
}

.knowledge-card h3 a:hover {
  color: var(--blue-dark);
}

.knowledge-card > p {
  flex: 1;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.65;
}

.knowledge-card .tag-list {
  margin-top: 22px;
  margin-bottom: 19px;
}

.knowledge-card-primary {
  grid-column: span 2;
  min-height: 420px;
  border-top: 3px solid var(--blue);
  background: var(--paper);
  padding: clamp(27px, 4vw, 38px);
}

.knowledge-card-primary h3 {
  max-width: 760px;
  margin-top: auto;
  font-size: clamp(1.85rem, 3.25vw, 2.7rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.knowledge-card-primary > p {
  max-width: 720px;
  flex: 0 1 auto;
}

.knowledge-directory {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.knowledge-directory > a {
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border-top: 2px solid var(--ink);
  background: var(--white);
  padding: 28px;
}

.knowledge-directory span {
  color: var(--blue-dark);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
}

.knowledge-directory strong {
  margin: 44px 0 12px;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.knowledge-directory p {
  max-width: 520px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.65;
}

.knowledge-directory em {
  margin-top: auto;
  color: var(--blue-dark);
  font-size: 0.78rem;
  font-style: normal;
  font-weight: 780;
}

.knowledge-thesis {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.7fr);
  align-items: end;
  gap: clamp(45px, 8vw, 94px);
  margin-top: 36px;
  margin-bottom: 36px;
  border-radius: 26px;
  color: var(--white);
  background: #142846;
  box-shadow: 0 30px 70px rgba(16, 33, 61, 0.18);
  padding: clamp(34px, 5vw, 52px);
}

.knowledge-thesis .eyebrow {
  color: #a9cafb;
}

.knowledge-thesis h2 {
  max-width: 720px;
  color: var(--white);
  font-size: clamp(2.2rem, 4.5vw, 3.7rem);
  line-height: 1.02;
  letter-spacing: -0.048em;
}

.knowledge-thesis > div:last-child p {
  color: #c4cfdd;
  font-size: 0.9rem;
  line-height: 1.7;
}

.knowledge-thesis .arrow-link {
  color: #a9cafb;
}

.category-crosslink {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 45px;
}

.category-crosslink h2 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.category-crosslink p:last-child {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

.software-definition {
  width: min(var(--shell), calc(100% - (var(--gutter) * 2)));
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.75fr);
  align-items: end;
  gap: 70px;
  margin: 0 auto 92px;
  border: 1px solid var(--line-dark);
  background: var(--paper);
  padding: clamp(28px, 5vw, 48px);
}

.software-definition h2 {
  margin-bottom: 13px;
  font-size: clamp(2.15rem, 4vw, 3.2rem);
  letter-spacing: -0.045em;
}

.software-definition > div > p:last-child {
  max-width: 660px;
  color: var(--muted);
  line-height: 1.7;
}

.software-definition dl {
  margin: 0;
  border-top: 1px solid var(--line-dark);
}

.software-definition dl > div {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 15px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.software-definition dt,
.software-definition dd {
  margin: 0;
  font-size: 0.74rem;
  line-height: 1.45;
}

.software-definition dt {
  color: var(--muted-2);
}

.software-definition .arrow-link {
  grid-column: 2;
}

@media (max-width: 1100px) {
  .site-header-inner {
    grid-template-columns: minmax(170px, 1fr) auto auto;
  }

  .site-nav {
    display: none;
  }

  .mobile-menu {
    justify-self: end;
    display: block;
    position: relative;
  }

  .mobile-menu summary {
    min-width: 74px;
    min-height: 40px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line-dark);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.76rem;
    font-weight: 760;
    list-style: none;
  }

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

  .mobile-menu[open] summary {
    color: var(--blue-dark);
    background: var(--blue-soft);
  }

  .mobile-menu nav {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: min(320px, calc(100vw - 36px));
    display: grid;
    border: 1px solid var(--line-dark);
    background: var(--white);
    box-shadow: 0 18px 42px rgba(16, 33, 61, 0.14);
    padding: 10px;
  }

  .mobile-menu-link {
    padding: 10px 8px;
    border-bottom: 1px solid var(--line);
    color: var(--ink-2);
    font-size: 0.78rem;
    font-weight: 680;
  }

  .mobile-menu .button {
    margin-top: 10px;
  }

  .home-hero h1 {
    font-size: clamp(3.7rem, 8.4vw, 5.45rem);
  }

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

  .material-grid > :last-child:nth-child(odd) {
    grid-column: 1 / -1;
  }

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

  .workflow-grid,
  .layer-grid,
  .use-case-grid,
  .security-level-grid,
  .about-principles > div {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .solution-card-large {
    grid-column: span 2;
  }
}

@media (max-width: 820px) {
  :root {
    --gutter: 18px;
  }

  html {
    scroll-padding-top: 78px;
  }

  .site-header-inner {
    min-height: 68px;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 10px;
  }

  .site-header-actions {
    display: none;
  }

  .site-header-inner > .site-login-link-mobile {
    min-width: 76px;
    min-height: 44px;
    display: inline-flex;
    justify-self: end;
    padding-inline: 14px;
  }

  .page-hero-grid.has-aside {
    grid-template-columns: 1fr;
  }

  .home-hero-clean {
    min-height: 0;
    padding-top: 60px;
    padding-bottom: 62px;
  }

  .home-hero-bottom {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 26px;
  }

  .hero-audience {
    margin-top: 38px;
  }

  .proof-band-grid {
    grid-template-columns: 1fr;
  }

  .proof-band article,
  .proof-band article:first-child {
    padding: 19px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .proof-band article:last-child {
    border-bottom: 0;
  }

  .section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .split-intro,
  .technical-split,
  .metrics-intro-grid,
  .role-outcome,
  .method-boundary,
  .method-checklist,
  .metric-warning,
  .editorial-plan,
  .isolation-diagram,
  .security-release,
  .about-evidence,
  .security-callout,
  .evidence-principles,
  .platform-map,
  .two-column-copy,
  .knowledge-thesis,
  .software-definition,
  .category-crosslink {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .knowledge-directory {
    grid-template-columns: 1fr;
  }

  .software-definition .arrow-link {
    grid-column: 1;
  }

  .technical-points {
    max-width: 620px;
  }

  .capability-row {
    grid-template-columns: 46px minmax(0, 1fr);
  }

  .capability-row aside {
    grid-column: 2;
  }

  .solution-card-large {
    min-height: 0;
    display: flex;
  }

  .result-stack article {
    grid-template-columns: 80px minmax(0, 1fr);
  }

  .result-stack article p {
    grid-column: 2;
  }

  .example-detail {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .article-layout {
    grid-template-columns: 1fr;
    max-width: 720px;
  }

  .article-toc {
    position: static;
  }

  .cta-section {
    grid-template-columns: 1fr;
  }

  .cta-actions {
    justify-content: flex-start;
  }

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

  .security-callout {
    margin-top: 72px;
    margin-bottom: 72px;
    padding: 32px;
  }
}

@media (max-width: 560px) {
  :root {
    --gutter: 15px;
  }

  .site-brand-mark {
    width: 38px;
    height: 38px;
    flex-basis: 38px;
  }

  .site-wordmark {
    font-size: 0.78rem;
  }

  .home-hero h1,
  .page-hero-copy h1,
  .article-header h1 {
    font-size: clamp(1.9rem, 8.5vw, 2.8rem);
    line-height: 1.02;
    overflow-wrap: break-word;
    word-break: normal;
    hyphens: auto;
  }

  h1,
  h2,
  h3 {
    overflow-wrap: break-word;
    word-break: normal;
    hyphens: auto;
  }

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

  .home-hero-bottom {
    margin-top: 27px;
  }

  .hero-audience {
    display: grid;
    gap: 8px;
    margin-top: 32px;
  }

  .task-grid,
  .material-grid,
  .knowledge-grid,
  .workflow-grid,
  .layer-grid,
  .use-case-grid,
  .security-level-grid,
  .about-principles > div,
  .boundary-grid,
  .content-principles,
  .solution-card-grid,
  .combination-grid,
  .security-do-dont {
    grid-template-columns: 1fr;
  }

  .knowledge-card-primary {
    grid-column: span 1;
    min-height: 390px;
  }

  .knowledge-thesis {
    margin-top: 56px;
    margin-bottom: 56px;
    border-radius: 20px;
    padding: 26px 21px;
  }

  .software-definition dl > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .solution-card-large {
    grid-column: span 1;
  }

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

  .example-preview-metrics,
  .example-detail-metrics {
    grid-template-columns: 1fr;
  }

  .example-preview-metrics > div + div,
  .example-detail-metrics > div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
    padding-left: 0;
  }

  .section-heading h2,
  .cta-section h2,
  .split-intro h2,
  .technical-split h2,
  .security-callout h2,
  .method-boundary h2,
  .metric-warning h2,
  .solution-workflow h2,
  .solution-outcome h2,
  .isolation-diagram h2,
  .security-release h2,
  .about-evidence h2 {
    font-size: clamp(1.65rem, 7.2vw, 2.2rem);
    line-height: 1.08;
    overflow-wrap: break-word;
    word-break: normal;
    hyphens: auto;
  }

  .technical-points {
    grid-template-columns: 1fr;
  }

  .security-callout {
    margin-top: 56px;
    margin-bottom: 56px;
    border-radius: 20px;
    padding: 24px 20px;
  }

  .security-checks > div {
    padding: 10px;
  }

  .metric-definition-list > div,
  .role-outcome dl > div,
  .example-detail dl > div {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .capability-row {
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 52px 0;
  }

  .capability-row aside {
    grid-column: 1;
  }

  .method-steps > article,
  .metric-catalog > article {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .diagram {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .diagram > i {
    width: 1px;
    height: 24px;
    margin-left: 28px;
  }

  .cta-section {
    padding: 28px 22px;
  }

  .site-footer-main {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .site-footer-bottom {
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .site-header,
  .site-footer,
  .cta-section,
  .article-toc,
  .hero-actions {
    display: none !important;
  }

  body {
    color: #000000;
    background: #ffffff;
  }

  .article-layout {
    display: block;
  }
}