@font-face {
  font-family: "Onest";
  src: url("./fonts/onest-cyrillic.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
  font-family: "Onest";
  src: url("./fonts/onest-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  color-scheme: light;
  --color-bg: oklch(1 0 0);
  --color-surface: oklch(0.965 0.008 110);
  --color-ink: oklch(0.18 0.025 110);
  --color-primary: oklch(0.35 0.075 110);
  --color-primary-deep: oklch(0.25 0.06 110);
  --color-primary-light: oklch(0.88 0.055 110);
  --color-accent: oklch(0.50 0.16 35);
  --color-accent-light: oklch(0.93 0.035 35);
  --color-muted: oklch(0.43 0.025 110);
  --color-line: oklch(0.84 0.014 110);
  --color-white: oklch(1 0 0);
  --page-padding: clamp(1.25rem, 4vw, 4.5rem);
  --section-space: clamp(5.5rem, 11vw, 11rem);
  --content-width: 90rem;
  --radius-sm: 8px;
  --radius-md: 14px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: "Onest", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

body,
button,
a {
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.24em;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

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

::selection {
  background: var(--color-primary-light);
  color: var(--color-primary-deep);
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  background: var(--color-ink);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  transform: translateY(-150%);
}

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

.site-header,
.hero,
.install-section,
.transformation,
.method,
.prompt-section,
.evidence,
.final-cta,
.site-footer {
  width: min(100%, var(--content-width));
  margin-inline: auto;
  padding-inline: var(--page-padding);
}

.site-header {
  min-height: 5.5rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid var(--color-line);
}

.brand {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--color-primary-deep);
  font-size: 1.15rem;
  font-weight: 760;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 1.8;
}

.header-nav {
  display: flex;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.header-nav a,
.language-switch a,
.site-footer nav a {
  font-size: 0.875rem;
  font-weight: 620;
  text-decoration: none;
}

.header-nav a,
.site-footer nav a {
  color: var(--color-muted);
  transition: color 180ms var(--ease-out);
}

.header-nav a:hover,
.site-footer nav a:hover {
  color: var(--color-accent);
}

.language-switch {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-line);
}

.language-switch a {
  color: var(--color-muted);
}

.language-switch a[aria-current="page"] {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 2px;
}

.hero {
  min-height: calc(100vh - 5.5rem);
  min-height: calc(100svh - 5.5rem);
  padding-block: clamp(4.5rem, 9vw, 9rem);
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(23rem, 5fr);
  gap: clamp(3.5rem, 8vw, 8rem);
  align-items: center;
}

.hero-copy {
  min-width: 0;
  max-width: 56rem;
}

.hero-note {
  width: fit-content;
  max-width: 100%;
  margin: 0 0 1.75rem;
  padding: 0.45rem 0.75rem;
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}

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

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

h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(3.2rem, 7.2vw, 5.8rem);
  font-weight: 820;
  letter-spacing: -0.035em;
  line-height: 0.97;
}

h1 span {
  color: var(--color-primary);
}

.hero-lede {
  max-width: 58ch;
  margin: 2.25rem 0 0;
  color: var(--color-muted);
  font-size: clamp(1.08rem, 1.5vw, 1.3rem);
  line-height: 1.55;
}

.hero-actions {
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.35rem 1.75rem;
}

.button {
  min-height: 3.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.3rem;
  border: 0;
  border-radius: var(--radius-sm);
  font-weight: 720;
  text-decoration: none;
  transition: transform 200ms var(--ease-out), background-color 200ms var(--ease-out);
}

.button:hover {
  transform: translateY(-2px);
}

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

.button-primary:hover {
  background: var(--color-primary-deep);
}

.text-link {
  width: fit-content;
  color: var(--color-primary-deep);
  font-weight: 680;
  text-decoration-color: var(--color-accent);
}

.text-link span {
  display: inline-block;
  margin-left: 0.25rem;
  transition: transform 180ms var(--ease-out);
}

.text-link:hover span {
  transform: translate(2px, -2px);
}

.hero-pyramid {
  margin: 0;
  align-self: center;
}

.pyramid-top {
  position: relative;
  z-index: 2;
  width: 72%;
  margin-inline: auto;
  padding: clamp(1.25rem, 2.5vw, 2.25rem);
  background: var(--color-primary);
  color: var(--color-white);
}

.pyramid-top span,
.pyramid-supports span {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.66rem;
  font-weight: 760;
  letter-spacing: 0.08em;
}

.pyramid-top strong {
  display: block;
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  line-height: 1.2;
}

.pyramid-connectors {
  width: 100%;
  height: clamp(4.25rem, 7vw, 7rem);
  color: var(--color-primary);
  overflow: visible;
}

.pyramid-connectors path {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: draw-structure 1100ms 250ms var(--ease-out) forwards;
}

@keyframes draw-structure {
  to {
    stroke-dashoffset: 0;
  }
}

.pyramid-supports {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.pyramid-supports div {
  min-height: 8.5rem;
  padding: 1.15rem;
  background: var(--color-surface);
  border-top: 2px solid var(--color-primary);
}

.pyramid-supports div + div {
  border-left: 1px solid var(--color-line);
}

.pyramid-supports span {
  color: var(--color-accent);
}

.pyramid-supports strong {
  font-size: clamp(0.84rem, 1.15vw, 1rem);
  line-height: 1.35;
}

.hero-pyramid figcaption,
.scq-figure figcaption {
  margin-top: 1rem;
  color: var(--color-muted);
  font-size: 0.8rem;
}

.install-section {
  padding-block: var(--section-space);
  background: var(--color-primary-deep);
  color: var(--color-white);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(17rem, 4fr);
  gap: clamp(2rem, 6vw, 7rem);
  align-items: end;
}

.section-heading h2,
.evidence h2,
.final-cta h2 {
  margin: 0;
  font-size: clamp(2.35rem, 4.8vw, 4.6rem);
  font-weight: 780;
  letter-spacing: -0.034em;
  line-height: 1.02;
}

.section-heading > p {
  max-width: 52ch;
  margin: 0;
  color: var(--color-muted);
}

.install-section .section-heading > p {
  color: oklch(0.83 0.018 110);
}

.install-board {
  margin-top: clamp(3rem, 6vw, 5.5rem);
  border-top: 1px solid oklch(0.47 0.05 110);
  border-bottom: 1px solid oklch(0.47 0.05 110);
}

.install-track {
  display: grid;
  grid-template-columns: minmax(10rem, 2fr) minmax(0, 8fr);
  column-gap: clamp(2rem, 5vw, 5rem);
  padding-block: clamp(2rem, 4vw, 3.5rem);
}

.install-track + .install-track {
  border-top: 1px solid oklch(0.47 0.05 110);
}

.install-track-heading h3 {
  margin: 0 0 0.25rem;
  font-size: 1.45rem;
}

.install-track-heading span {
  color: oklch(0.78 0.02 110);
  font-size: 0.8rem;
}

.command-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.command-list li {
  min-width: 0;
  display: grid;
  grid-template-columns: 1.5rem minmax(0, 1fr) auto;
  gap: 0.8rem;
  align-items: center;
  padding-block: 0.75rem;
}

.command-list li + li {
  border-top: 1px solid oklch(0.44 0.045 110);
}

.command-number {
  color: oklch(0.75 0.035 110);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}

.command-list code,
.install-use code {
  min-width: 0;
  color: var(--color-white);
  font-family: inherit;
  font-size: clamp(0.78rem, 1.2vw, 0.95rem);
  font-weight: 600;
  overflow-wrap: anywhere;
}

.copy-button {
  padding: 0.48rem 0.72rem;
  border: 1px solid oklch(0.63 0.045 110);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-white);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 680;
  transition: color 180ms var(--ease-out), background-color 180ms var(--ease-out);
}

.copy-button:hover {
  background: var(--color-white);
  color: var(--color-primary-deep);
}

.install-use {
  grid-column: 2;
  margin: 1.15rem 0 0;
  color: oklch(0.81 0.02 110);
  font-size: 0.84rem;
}

.copy-status {
  min-height: 1.6rem;
  margin: 1rem 0 0;
  color: oklch(0.88 0.08 110);
  font-size: 0.84rem;
}

.transformation,
.method,
.prompt-section,
.evidence {
  padding-block: var(--section-space);
}

.before-after {
  margin-top: clamp(3.5rem, 7vw, 7rem);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.draft {
  position: relative;
  padding: clamp(2rem, 5vw, 5rem);
}

.draft + .draft {
  border-left: 1px solid var(--color-line);
}

.draft-label {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 3rem;
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 680;
}

.draft-before > p {
  margin: 0;
  color: var(--color-muted);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
}

.draft-after {
  background: var(--color-surface);
}

.draft-after h3 {
  margin: 0 0 2rem;
  color: var(--color-primary-deep);
  font-size: clamp(1.5rem, 2.6vw, 2.5rem);
  line-height: 1.15;
}

.draft-after ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.draft-after li {
  padding: 0.7rem 0 0.7rem 1.7rem;
  background: linear-gradient(var(--color-accent), var(--color-accent)) 0 1.35rem / 0.65rem 2px no-repeat;
  border-top: 1px solid var(--color-line);
}

.annotation {
  width: fit-content;
  margin-top: 3rem;
  padding: 0.4rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}

.annotation-before {
  background: var(--color-surface);
  color: var(--color-muted);
}

.annotation-after {
  background: var(--color-accent);
  color: var(--color-white);
}

.method {
  border-top: 1px solid var(--color-line);
}

.method-intro {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(24rem, 5fr);
  gap: clamp(4rem, 10vw, 10rem);
}

.method .section-heading {
  display: block;
}

.method .section-heading > p {
  margin-top: 2rem;
}

.mode-list {
  margin: 0;
}

.mode-list > div {
  display: grid;
  grid-template-columns: 6rem minmax(0, 1fr);
  gap: 1.5rem;
  padding-block: 1.3rem;
  border-top: 1px solid var(--color-line);
}

.mode-list > div:last-child {
  border-bottom: 1px solid var(--color-line);
}

.mode-list dt,
.mode-list dd {
  margin: 0;
}

.mode-list dt code {
  color: var(--color-accent);
  font-family: inherit;
  font-weight: 760;
}

.mode-list dd {
  color: var(--color-muted);
}

.scq-figure {
  margin: clamp(5rem, 10vw, 10rem) 0 0;
}

.scq-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.scq-flow li {
  position: relative;
  min-height: 12rem;
  padding: 1.5rem;
  background: var(--color-surface);
  border-top: 2px solid var(--color-primary);
}

.scq-flow li + li {
  border-left: 1px solid var(--color-line);
}

.scq-flow li:not(:last-child)::after {
  content: "→";
  position: absolute;
  z-index: 2;
  top: 50%;
  right: -0.8rem;
  width: 1.6rem;
  height: 1.6rem;
  display: grid;
  place-items: center;
  background: var(--color-bg);
  color: var(--color-accent);
  font-weight: 800;
  transform: translateY(-50%);
}

.scq-flow li:last-child {
  background: var(--color-primary);
  color: var(--color-white);
}

.scq-flow span {
  display: block;
  margin-bottom: 3rem;
  color: var(--color-accent);
  font-size: 0.76rem;
  font-weight: 760;
}

.scq-flow li:last-child span {
  color: oklch(0.9 0.08 110);
}

.scq-flow strong {
  display: block;
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  line-height: 1.35;
}

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

.prompt-list {
  margin-top: clamp(3rem, 6vw, 5.5rem);
  border-top: 1px solid var(--color-line);
}

.prompt-copy {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: center;
  padding: 1.5rem 0;
  border: 0;
  border-bottom: 1px solid var(--color-line);
  background: transparent;
  color: var(--color-ink);
  cursor: pointer;
  text-align: left;
  transition: color 180ms var(--ease-out), padding 220ms var(--ease-out);
}

.prompt-copy:hover {
  padding-inline: 0.75rem;
  color: var(--color-primary);
}

.prompt-copy > span:first-child {
  max-width: 72ch;
  font-size: clamp(1rem, 1.8vw, 1.28rem);
  font-weight: 590;
}

.prompt-action {
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 740;
}

.evidence {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(25rem, 5fr);
  gap: clamp(4rem, 10vw, 10rem);
}

.evidence-statement > p:first-child {
  width: fit-content;
  margin: 0 0 1.5rem;
  padding: 0.42rem 0.68rem;
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 720;
}

.evidence h2 span {
  display: block;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.evidence-statement > p:last-child {
  max-width: 52ch;
  margin: 2rem 0 0;
  color: var(--color-muted);
}

.evidence-detail {
  align-self: end;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

caption {
  padding-bottom: 1rem;
  color: var(--color-muted);
  font-size: 0.8rem;
  text-align: left;
}

th,
td {
  padding: 0.9rem 0.6rem;
  border-bottom: 1px solid var(--color-line);
  text-align: right;
}

th:first-child,
td:first-child {
  padding-left: 0;
  text-align: left;
}

thead th {
  color: var(--color-muted);
  font-size: 0.75rem;
}

tbody th {
  font-weight: 620;
}

.positive {
  color: var(--color-primary);
  font-weight: 740;
}

.negative {
  color: var(--color-accent);
  font-weight: 740;
}

.evidence-caveat {
  margin: 1.5rem 0;
  color: var(--color-muted);
  font-size: 0.85rem;
}

.final-cta {
  width: min(calc(100% - (2 * var(--page-padding))), calc(var(--content-width) - (2 * var(--page-padding))));
  margin-bottom: var(--page-padding);
  padding: clamp(2.5rem, 6vw, 6rem);
  display: flex;
  justify-content: space-between;
  gap: 3rem;
  align-items: end;
  background: var(--color-primary);
  color: var(--color-white);
}

.final-cta > div {
  max-width: 58rem;
}

.final-cta h2 {
  max-width: 14ch;
}

.final-cta p {
  max-width: 55ch;
  margin: 1.5rem 0 0;
  color: oklch(0.9 0.025 110);
}

.button-light {
  flex: 0 0 auto;
  background: var(--color-white);
  color: var(--color-primary-deep);
}

.button-light:hover {
  background: var(--color-primary-light);
}

.site-footer {
  min-height: 9rem;
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 2rem;
  align-items: center;
  border-top: 1px solid var(--color-line);
}

.site-footer p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.84rem;
  text-align: center;
}

.site-footer nav {
  justify-self: end;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.4rem;
}

@media (max-width: 70rem) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-copy {
    max-width: 65rem;
  }

  .hero-pyramid {
    width: min(100%, 42rem);
    margin-inline: auto;
  }

  .method-intro,
  .evidence {
    grid-template-columns: 1fr;
  }

  .method-intro {
    gap: 4rem;
  }

  .evidence {
    gap: 4rem;
  }

  .evidence-detail {
    max-width: 45rem;
  }
}

@media (max-width: 52rem) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .header-nav {
    display: none;
  }

  .section-heading,
  .install-track {
    grid-template-columns: 1fr;
  }

  .section-heading {
    gap: 1.5rem;
  }

  .install-track {
    gap: 1.5rem;
  }

  .install-use {
    grid-column: 1;
  }

  .before-after {
    grid-template-columns: 1fr;
  }

  .draft + .draft {
    border-top: 1px solid var(--color-line);
    border-left: 0;
  }

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

  .scq-flow li:nth-child(3) {
    border-left: 0;
  }

  .scq-flow li:nth-child(n + 3) {
    border-top-width: 1px;
  }

  .scq-flow li::after {
    display: none !important;
  }

  .final-cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-footer {
    grid-template-columns: 1fr;
    padding-block: 2rem;
  }

  .site-footer p {
    text-align: left;
  }

  .site-footer nav {
    justify-self: start;
  }
}

@media (max-width: 37rem) {
  :root {
    --page-padding: 1.1rem;
    --section-space: 5rem;
  }

  .site-header {
    min-height: 4.75rem;
  }

  .hero {
    padding-block: 4.5rem 5.5rem;
  }

  h1 {
    font-size: clamp(2.8rem, 14vw, 4rem);
  }

  html[lang="ru"] h1 {
    max-width: 100%;
    font-size: clamp(2.4rem, 11.8vw, 4rem);
  }

  .pyramid-top {
    width: 86%;
  }

  .pyramid-supports {
    grid-template-columns: 1fr;
    border: 1px solid var(--color-line);
    border-top: 0;
  }

  .pyramid-connectors {
    height: 3rem;
  }

  .pyramid-supports div {
    min-height: auto;
    border-top: 1px solid var(--color-line);
  }

  .pyramid-supports div + div {
    border-left: 0;
  }

  .command-list li {
    grid-template-columns: 1.25rem minmax(0, 1fr);
  }

  .copy-button {
    grid-column: 2;
    justify-self: start;
  }

  .draft {
    padding: 2rem 0;
  }

  .draft-after {
    margin-inline: calc(-1 * var(--page-padding));
    padding-inline: var(--page-padding);
  }

  .mode-list > div {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

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

  .scq-flow li,
  .scq-flow li:nth-child(3) {
    min-height: 9.5rem;
    border-left: 0;
    border-top: 1px solid var(--color-line);
  }

  .prompt-copy {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .evidence-detail {
    min-width: 0;
    overflow-x: auto;
  }

  .final-cta {
    width: calc(100% - (2 * var(--page-padding)));
    border-radius: 0;
  }
}

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

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

  .pyramid-connectors path {
    stroke-dashoffset: 0;
  }
}

/* Minto 2.0: the page behaves like a live argument, not a static report. */

:root {
  --z-base: 0;
  --z-sticky: 10;
  --z-toast: 20;
  --content-inset: max(
    var(--page-padding),
    calc((100vw - var(--content-width)) / 2 + var(--page-padding))
  );
}

main {
  position: relative;
  isolation: isolate;
}

.js [hidden] {
  display: none !important;
}

.site-header {
  position: sticky;
  z-index: var(--z-sticky);
  top: 0;
  min-height: 4.75rem;
  background: var(--color-bg);
}

.header-nav {
  gap: clamp(1rem, 2vw, 2rem);
}

.header-nav a {
  position: relative;
  padding-block: 1.65rem;
}

.header-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms var(--ease-out);
}

.header-nav a:hover::after,
.header-nav a[aria-current]::after {
  transform: scaleX(1);
}

.argument-spine {
  position: absolute;
  z-index: -1;
  top: 8rem;
  bottom: 12rem;
  left: 50%;
  width: 1px;
  background: color-mix(in oklch, var(--color-line) 56%, transparent);
  pointer-events: none;
}

.argument-spine::before,
.argument-spine::after,
.argument-spine span {
  content: "";
  position: absolute;
  left: 50%;
  width: 0.55rem;
  height: 0.55rem;
  border: 1px solid var(--color-accent);
  background: var(--color-bg);
  transform: translate(-50%, -50%) rotate(45deg);
}

.argument-spine::before {
  top: 7%;
}

.argument-spine span {
  top: 47%;
}

.argument-spine::after {
  top: 84%;
}

.hero,
.transformation,
.method,
.evidence {
  background: var(--color-bg);
}

.hero {
  min-height: calc(100svh - 4.75rem);
  padding-block: clamp(4rem, 8vw, 7.5rem);
  grid-template-columns: minmax(0, 6.8fr) minmax(27rem, 5.2fr);
  gap: clamp(3rem, 7vw, 7rem);
}

.hero-copy {
  max-width: 53rem;
}

.hero-question {
  max-width: 40rem;
  display: flex;
  gap: 0.7rem;
  align-items: center;
  margin: 0 0 1.8rem;
  color: var(--color-accent);
  font-size: 0.86rem;
  font-weight: 720;
}

.hero-question > span {
  width: 0.55rem;
  height: 0.55rem;
  flex: 0 0 auto;
  background: var(--color-accent);
  transform: rotate(45deg);
}

h1 {
  max-width: 11.5ch;
  font-size: clamp(3.2rem, 6.8vw, 5.45rem);
  font-weight: 790;
  letter-spacing: -0.032em;
  line-height: 0.98;
}

.hero-lede {
  max-width: 61ch;
  margin-top: 2rem;
}

.argument-map {
  position: relative;
  width: min(100%, 38rem);
  padding-block: 2rem 0;
}

.argument-map::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  right: calc(-1 * var(--page-padding));
  bottom: 1.75rem;
  left: 18%;
  background: var(--color-surface);
}

.argument-answer {
  width: 70%;
  margin-inline: 24% 6%;
  padding: clamp(1.5rem, 3vw, 2.4rem);
}

.pyramid-top span,
.pyramid-supports span {
  text-transform: none;
  letter-spacing: 0.035em;
}

.pyramid-supports {
  position: relative;
}

.pyramid-supports div {
  min-height: 9.4rem;
  padding: 1.25rem;
  background: var(--color-bg);
}

.pyramid-supports div:nth-child(2) {
  transform: translateY(1rem);
}

.pyramid-supports div:nth-child(3) {
  transform: translateY(2rem);
}

.pyramid-supports strong {
  font-size: clamp(0.88rem, 1.15vw, 1.02rem);
}

.argument-map figcaption {
  margin-top: 3rem;
}

.is-ready .argument-answer {
  animation: answer-arrive 700ms 80ms var(--ease-out) both;
}

.is-ready .pyramid-supports div {
  animation: support-arrive 650ms var(--ease-out) both;
}

.is-ready .pyramid-supports div:nth-child(1) {
  animation-delay: 420ms;
}

.is-ready .pyramid-supports div:nth-child(2) {
  animation-delay: 520ms;
}

.is-ready .pyramid-supports div:nth-child(3) {
  animation-delay: 620ms;
}

@keyframes answer-arrive {
  from {
    opacity: 0.82;
    transform: translateY(-1.4rem);
  }
}

@keyframes support-arrive {
  from {
    opacity: 0.78;
    translate: 0 1.2rem;
  }
}

.install-section,
.prompt-section {
  width: 100%;
  max-width: none;
  padding-inline: var(--content-inset);
}

.install-section {
  position: relative;
  overflow: clip;
}

.install-section::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: oklch(0.43 0.045 110);
}

.install-platforms {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(3rem, 6vw, 5.5rem);
  border: 1px solid oklch(0.43 0.045 110);
  background: oklch(0.43 0.045 110);
}

.install-track {
  display: block;
  padding: clamp(1.75rem, 3.5vw, 3.25rem);
  background: var(--color-primary-deep);
}

.install-track + .install-track {
  border-top: 0;
}

.install-track-heading {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  margin-bottom: 2rem;
}

.command-list li {
  grid-template-columns: 1.25rem minmax(0, 1fr) auto;
  padding-block: 1rem;
}

.install-use {
  grid-column: auto;
  margin-top: 1.5rem;
}

.transformation {
  padding-bottom: calc(var(--section-space) * 1.15);
}

.transformation-stage {
  margin-top: clamp(3.5rem, 7vw, 6.5rem);
}

.transform-controls {
  display: none;
}

.js .transform-controls {
  width: fit-content;
  display: flex;
  gap: 0.25rem;
  margin: 0 auto 1.5rem;
  padding: 0.25rem;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: var(--color-surface);
}

.transform-controls button {
  min-height: 2.75rem;
  padding: 0.6rem 1.05rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 700;
  transition:
    background-color 180ms var(--ease-out),
    color 180ms var(--ease-out);
}

.transform-controls button[aria-pressed="true"] {
  background: var(--color-primary);
  color: var(--color-white);
}

.transform-panels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--color-line);
  background: var(--color-line);
  gap: 1px;
}

.js .transform-panels {
  grid-template-columns: 1fr;
}

.transform-document {
  min-height: 33rem;
  display: flex;
  flex-direction: column;
  padding: clamp(1.5rem, 4vw, 4rem);
  background: var(--color-bg);
}

.transform-document header,
.transform-document footer {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  color: var(--color-muted);
  font-size: 0.78rem;
}

.transform-document header {
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--color-line);
}

.transform-document footer {
  margin-top: auto;
  padding-top: 2rem;
}

.document-body {
  width: min(100%, 52rem);
  margin: clamp(2.5rem, 6vw, 5rem) auto;
}

.transform-before .document-body {
  color: var(--color-muted);
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
}

.transform-before .document-body > p {
  margin: 0 0 1rem;
}

.recommendation-line > span,
.mode-output > span {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--color-accent);
  font-size: 0.73rem;
  font-weight: 760;
  letter-spacing: 0.035em;
}

.transform-before .recommendation-line {
  margin-top: 3.5rem;
  padding-top: 1.15rem;
  border-top: 1px solid var(--color-accent);
  color: var(--color-ink);
  font-weight: 620;
}

.transform-after {
  background: var(--color-surface);
}

.transform-after h3 {
  max-width: 20ch;
  margin: 0 0 clamp(2.5rem, 5vw, 4rem);
  color: var(--color-primary-deep);
  font-size: clamp(2rem, 4.5vw, 4.5rem);
  line-height: 1.02;
}

.transform-after ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.transform-after li {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: 1rem;
  padding-block: 1rem;
  border-top: 1px solid var(--color-line);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  font-weight: 590;
}

.transform-after li > span {
  color: var(--accent, var(--color-accent));
  font-size: 0.76rem;
  font-variant-numeric: tabular-nums;
}

.js .transform-after:not([hidden]) .recommendation-line {
  animation: answer-moves-up 680ms var(--ease-out) both;
}

.js .transform-after:not([hidden]) li {
  animation: evidence-collects 520ms var(--ease-out) both;
}

.js .transform-after:not([hidden]) li:nth-child(2) {
  animation-delay: 80ms;
}

.js .transform-after:not([hidden]) li:nth-child(3) {
  animation-delay: 160ms;
}

@keyframes answer-moves-up {
  from {
    opacity: 0.78;
    transform: translateY(5rem);
  }
}

@keyframes evidence-collects {
  from {
    opacity: 0.76;
    transform: translateX(1.25rem);
  }
}

.transform-status {
  min-height: 1.5rem;
  margin: 0.8rem 0 0;
  color: var(--color-muted);
  font-size: 0.78rem;
  text-align: center;
}

.method {
  width: 100%;
  max-width: none;
  padding-inline: var(--content-inset);
  background: var(--color-surface);
  border-top: 0;
}

.method-heading {
  position: relative;
}

.method-heading::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -2rem;
  left: 0;
  height: 1px;
  background: var(--color-line);
}

.mode-explorer {
  margin-top: clamp(4.5rem, 8vw, 7rem);
}

.mode-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--color-line);
}

.mode-tabs a {
  min-width: 0;
  display: grid;
  gap: 0.35rem;
  padding: 1.25rem;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-muted);
  text-decoration: none;
  transition:
    background-color 180ms var(--ease-out),
    color 180ms var(--ease-out);
}

.mode-tabs a + a {
  border-left: 1px solid var(--color-line);
}

.mode-tabs code,
.mode-label code {
  color: var(--color-accent);
  font-family: inherit;
  font-weight: 760;
}

.mode-tabs span {
  font-size: 0.78rem;
}

.mode-tabs a:hover,
.mode-tabs a[aria-selected="true"],
.mode-tabs a[aria-current] {
  background: var(--color-primary);
  color: var(--color-white);
}

.mode-tabs a[aria-selected="true"] code,
.mode-tabs a[aria-current] code {
  color: oklch(0.9 0.075 45);
}

.mode-panels {
  background: var(--color-bg);
}

.mode-panel {
  min-height: 35rem;
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(25rem, 6fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: center;
  padding: clamp(2rem, 6vw, 6rem);
  border-bottom: 1px solid var(--color-line);
}

.mode-panel + .mode-panel {
  border-top: 1px solid var(--color-line);
}

.mode-panel-copy h3 {
  max-width: 18ch;
  margin: 1.2rem 0 1.5rem;
  font-size: clamp(2rem, 3.6vw, 3.5rem);
  line-height: 1.04;
}

.mode-panel-copy > p:last-child {
  max-width: 48ch;
  margin: 0;
  color: var(--color-muted);
}

.mode-label {
  margin: 0;
}

.mode-output {
  min-width: 0;
  padding: clamp(1.5rem, 3.5vw, 3rem);
  border-top: 3px solid var(--color-primary);
  background: var(--color-surface);
}

.intent-output p,
.intent-output strong {
  display: block;
  margin: 0 0 1.8rem;
}

.intent-output strong {
  color: var(--color-primary-deep);
  font-size: clamp(1.35rem, 2.4vw, 2.25rem);
  line-height: 1.16;
}

.audit-output {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: 2rem;
}

.audit-output > div span {
  display: block;
  color: var(--color-primary);
  font-size: 3.5rem;
  font-weight: 780;
  line-height: 1;
}

.audit-output small {
  color: var(--color-muted);
}

.audit-output ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.audit-output li {
  padding-block: 0.8rem;
  border-top: 1px solid var(--color-line);
}

.audit-output li strong {
  display: block;
  color: var(--color-accent);
  font-size: 0.72rem;
}

.write-output {
  background: var(--color-primary);
  color: var(--color-white);
}

.write-output > strong {
  display: block;
  font-size: clamp(1.6rem, 3vw, 3rem);
  line-height: 1.08;
}

.write-output > p {
  margin: 2rem 0 0;
  color: oklch(0.9 0.025 110);
}

.viz-output {
  min-height: 22rem;
  display: grid;
  grid-template-rows: auto 4rem auto;
  align-items: center;
  text-align: center;
}

.viz-output > strong {
  width: min(100%, 20rem);
  justify-self: center;
  padding: 1.25rem;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1.25rem;
}

.viz-output > div {
  width: 1px;
  height: 100%;
  justify-self: center;
  background: var(--color-primary);
}

.viz-output ul {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-primary);
  list-style: none;
}

.viz-output li {
  padding: 1.2rem 0.5rem;
  font-size: 0.82rem;
  font-weight: 650;
}

.viz-output li + li {
  border-left: 1px solid var(--color-line);
}

.scq-figure {
  margin-top: clamp(5rem, 9vw, 8rem);
}

.scq-flow {
  grid-template-columns: 1.2fr 1.1fr 0.9fr 1.2fr;
  border-top: 1px solid var(--color-primary);
}

.scq-flow li {
  min-height: 15rem;
  background: var(--color-bg);
  border-top: 0;
}

.scq-flow li:nth-child(2) {
  background: var(--color-accent-light);
}

.scq-flow li:nth-child(3) {
  background: transparent;
  outline: 1px solid var(--color-primary);
  outline-offset: -1px;
}

.scq-flow li:last-child {
  background: var(--color-primary);
}

.prompt-section {
  background: var(--color-bg);
}

.prompt-list {
  border-top-color: var(--color-primary);
}

.prompt-copy {
  position: relative;
  grid-template-columns: auto minmax(0, 1fr) auto;
  padding-block: 1.8rem;
}

.prompt-copy::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  margin-right: 1rem;
  display: inline-block;
  background: var(--color-accent);
  transform: rotate(45deg);
}

.prompt-copy > span:first-child {
  display: inline;
}

.evidence {
  grid-template-columns: minmax(0, 4fr) minmax(30rem, 6fr);
  align-items: start;
}

.evidence-statement {
  position: sticky;
  top: 8rem;
}

.evidence-statement > p:first-child {
  padding: 0;
  border-radius: 0;
  background: transparent;
}

.evidence h2 span {
  margin-top: 0.2em;
  font-size: 1.35em;
}

.evidence-detail {
  align-self: start;
}

.benchmark-chart {
  margin: 0;
  padding: clamp(1.5rem, 3.5vw, 3rem);
  border: 1px solid var(--color-line);
}

.benchmark-chart figcaption {
  margin-bottom: 2rem;
  color: var(--color-muted);
  font-size: 0.82rem;
}

.score-row {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr) 3.5rem;
  gap: 1rem;
  align-items: center;
  padding-block: 0.7rem;
  font-variant-numeric: tabular-nums;
}

.score-row > span {
  color: var(--color-muted);
  font-size: 0.82rem;
}

.score-row > div {
  height: 1rem;
  background: var(--color-surface);
}

.score-row i {
  height: 100%;
  display: block;
  background: var(--color-muted);
}

.control-score i {
  width: 56.3%;
}

.minto-score i {
  width: 67.5%;
  background: var(--color-primary);
}

.minto-score strong {
  color: var(--color-primary);
}

.effect-plot {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-line);
}

.effect-plot > p {
  margin: 0 0 1.25rem;
  color: var(--color-muted);
  font-size: 0.82rem;
}

.effect-row {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr) 3.5rem;
  gap: 1rem;
  align-items: center;
  min-height: 2.4rem;
  font-variant-numeric: tabular-nums;
}

.effect-row > span {
  font-size: 0.78rem;
}

.effect-row > i {
  position: relative;
  height: 0.55rem;
  display: block;
  background:
    linear-gradient(
      to right,
      transparent calc(50% - 0.5px),
      var(--color-line) calc(50% - 0.5px),
      var(--color-line) calc(50% + 0.5px),
      transparent calc(50% + 0.5px)
    );
}

.effect-row > i::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  background: var(--color-primary);
}

.effect-positive > i::before {
  left: 50%;
}

.effect-negative > i::before {
  right: 50%;
  background: var(--color-accent);
}

.effect-125 > i::before {
  width: 41.7%;
}

.effect-138 > i::before {
  width: 46%;
}

.effect-100 > i::before {
  width: 33.3%;
}

.effect-038 > i::before {
  width: 12.7%;
}

.effect-row > strong {
  text-align: right;
}

.effect-negative > strong {
  color: var(--color-accent);
}

.benchmark-data {
  margin-top: 1rem;
  border-bottom: 1px solid var(--color-line);
}

.benchmark-data summary {
  padding: 1rem 0;
  color: var(--color-primary);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 700;
}

.benchmark-data table {
  margin-bottom: 1rem;
}

.final-cta {
  position: relative;
  overflow: clip;
}

.final-cta::before {
  content: "";
  position: absolute;
  top: 0;
  right: 18%;
  width: 1px;
  height: 45%;
  background: oklch(0.72 0.055 110);
}

.final-cta::after {
  content: "";
  position: absolute;
  top: 45%;
  right: calc(18% - 0.3rem);
  width: 0.6rem;
  height: 0.6rem;
  border: 1px solid oklch(0.85 0.05 110);
  transform: rotate(45deg);
}

@media (max-width: 70rem) {
  .argument-spine {
    left: 63%;
  }

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

  .argument-map {
    width: min(100%, 44rem);
    margin-inline: auto;
  }

  .install-section::before {
    display: none;
  }

  .mode-panel {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .mode-panel-copy h3 {
    max-width: 24ch;
  }

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

  .evidence-statement {
    position: static;
  }
}

@media (max-width: 52rem) {
  .argument-spine {
    display: none;
  }

  .header-nav {
    display: none;
  }

  .install-platforms {
    grid-template-columns: 1fr;
  }

  .install-track + .install-track {
    border-top: 1px solid oklch(0.43 0.045 110);
  }

  .transform-panels {
    grid-template-columns: 1fr;
  }

  .transform-document {
    min-height: auto;
  }

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

  .mode-tabs a:nth-child(3) {
    border-left: 0;
  }

  .mode-panel {
    padding-inline: var(--page-padding);
  }

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

  .scq-flow li:nth-child(3) {
    border-left: 0;
  }

  .score-row {
    grid-template-columns: 6rem minmax(0, 1fr) 3rem;
  }

  .effect-row {
    grid-template-columns: 7.5rem minmax(0, 1fr) 3.5rem;
  }
}

@media (max-width: 37rem) {
  .site-header {
    min-height: 4.5rem;
  }

  .hero {
    padding-block: 3.75rem 5rem;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(2.7rem, 13.2vw, 3.7rem);
  }

  html[lang="ru"] h1 {
    font-size: clamp(2.35rem, 11.4vw, 3.3rem);
  }

  .hero-question {
    align-items: flex-start;
  }

  .argument-map::before {
    right: calc(-1 * var(--page-padding));
    left: 8%;
  }

  .argument-answer {
    width: 84%;
    margin-inline: 12% 4%;
  }

  .pyramid-supports {
    grid-template-columns: 1fr;
  }

  .pyramid-supports div,
  .pyramid-supports div:nth-child(2),
  .pyramid-supports div:nth-child(3) {
    min-height: auto;
    transform: none;
  }

  .argument-map figcaption {
    margin-top: 1.5rem;
  }

  .install-track {
    padding-inline: 1.25rem;
  }

  .install-track-heading {
    display: block;
  }

  .install-track-heading span {
    display: block;
    margin-top: 0.25rem;
  }

  .transform-controls {
    width: 100%;
  }

  .transform-controls button {
    flex: 1;
  }

  .transform-document {
    padding: 1.25rem;
  }

  .document-body {
    margin-block: 2rem;
  }

  .transform-after h3 {
    font-size: clamp(1.8rem, 9vw, 2.75rem);
  }

  .mode-tabs {
    grid-template-columns: 1fr;
  }

  .mode-tabs a + a {
    border-left: 0;
  }

  .mode-panel {
    gap: 2rem;
    padding-block: 3rem;
  }

  .mode-panel-copy h3 {
    font-size: clamp(1.85rem, 9vw, 2.6rem);
  }

  .mode-output {
    padding: 1.25rem;
  }

  .audit-output {
    grid-template-columns: 1fr;
  }

  .viz-output {
    min-height: 19rem;
  }

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

  .scq-flow li,
  .scq-flow li:nth-child(3) {
    min-height: 11rem;
    border-left: 0;
  }

  .prompt-copy {
    display: grid;
    grid-template-columns: 0.5rem minmax(0, 1fr);
    gap: 0 0.75rem;
  }

  .prompt-copy::before {
    margin: 0.5rem 0 0;
  }

  .prompt-action {
    grid-column: 2;
    margin-top: 0.65rem;
  }

  .benchmark-chart {
    padding: 1.1rem;
  }

  .score-row {
    grid-template-columns: 1fr auto;
    gap: 0.45rem 1rem;
  }

  .score-row > div {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .score-row > strong {
    grid-column: 2;
    grid-row: 1;
  }

  .effect-row {
    grid-template-columns: 1fr 3.5rem;
    gap: 0.25rem 1rem;
    padding-block: 0.4rem;
  }

  .effect-row > i {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .effect-row > strong {
    grid-column: 2;
    grid-row: 1;
  }

  .final-cta::before,
  .final-cta::after {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .is-ready .argument-answer,
  .is-ready .pyramid-supports div,
  .js .transform-after:not([hidden]) .recommendation-line,
  .js .transform-after:not([hidden]) li {
    animation: none !important;
  }
}