:root {
  --color-text: #26332f;
  --color-secondary: #63706c;
  --color-supporting: #6c634e;
  --color-surface: #fff;
  --color-canvas: #f7f5f0;
  --color-border: #e3e7e5;
  --color-accent: #d9ff54;
  --color-positive: #00c767;
  --shadow-card: 0 1px 1px rgb(0 0 0 / 14%), 0 6px 18px rgb(0 0 0 / 7%);
  --radius-md: 16px;
  --radius-lg: 24px;
  --page-padding: clamp(20px, 5.56vw, 80px);
  --section-padding: clamp(72px, 8.33vw, 120px);
  --content-width: 1280px;
}
* { box-sizing: border-box; }
html { color-scheme: light; scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--color-canvas); color: var(--color-text); font-family: Inter, Arial, sans-serif; font-size: 16px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { margin: 0; text-wrap: pretty; }
.container { width: min(100%, calc(var(--content-width) + 2 * var(--page-padding))); margin-inline: auto; padding-inline: var(--page-padding); }
.section { padding-block: var(--section-padding); }
.section--surface { background: var(--color-surface); }
.section--canvas { background: var(--color-canvas); }
.stack { display: flex; flex-direction: column; align-items: flex-start; gap: 32px; }
h1 { max-width: 1050px; font-size: clamp(52px, 5vw, 72px); font-weight: 600; line-height: 1.05; letter-spacing: -.025em; }
h2 { max-width: 920px; font-size: clamp(34px, 2.78vw, 40px); font-weight: 600; line-height: 1.2; letter-spacing: -.015em; }
h3 { font-size: 23px; font-weight: 600; line-height: 1.35; }
/* Keep long translated headings and RU non-breaking phrases within narrow columns. */
.case-part__header h3 { overflow-wrap: anywhere; }
.pill { display: inline-flex; padding: 8px 16px; border-radius: 999px; background: var(--color-accent); font-size: 12px; font-weight: 600; line-height: 16px; letter-spacing: .2px; text-transform: uppercase; }
.eyebrow { color: var(--color-secondary); font-size: 12px; font-weight: 600; line-height: 16px; letter-spacing: .2px; text-transform: uppercase; }
.eyebrow--dark { color: var(--color-text); }
.eyebrow--positive { color: var(--color-positive); }
.hero { padding: 0; }
.hero__content { display: flex; flex-direction: column; align-items: flex-start; gap: 32px; padding-block: 120px; }
.hero__lead, .section-lead { max-width: 790px; color: var(--color-secondary); font-size: 18px; line-height: 28px; }
.section-lead--wide { max-width: 880px; }
.meta { font-size: 14px; font-weight: 500; line-height: 20px; }
.meta b { text-transform: uppercase; }
.hero__media { padding-bottom: 120px; }
.hero-illustration { width: 100%; }
.hero-illustration img { width: 100%; height: auto; }
.product-frame { width: 100%; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-card); }
.product-frame__bar { display: flex; min-height: 54px; align-items: center; justify-content: space-between; gap: 24px; padding: 14px 20px; border-bottom: 1px solid var(--color-border); background: #fff; font-size: 13px; line-height: 18px; }
.product-frame__bar b { font-size: 14px; letter-spacing: .02em; text-transform: uppercase; }
.product-frame__bar span { color: var(--color-secondary); text-align: right; }
.product-frame img { width: 100%; height: auto; }
.overview-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 16px; width: 100%; }
.overview-card { display: flex; flex-direction: column; gap: 12px; padding: 32px; border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-card); }
.overview-card--accent { background: var(--color-accent); }
.overview-card > p:last-child { color: var(--color-secondary); font-size: 16px; line-height: 26px; }
.overview-card--accent > p:last-child { color: var(--color-text); }
.use-case-comparison { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: stretch; gap: 16px; width: 100%; }
.comparison-card { display: flex; min-width: 0; min-height: 551px; flex-direction: column; gap: 28px; padding: 32px; overflow: hidden; border-radius: var(--radius-md); background: #fff; box-shadow: var(--shadow-card); }
.comparison-card--use-case { background: var(--color-text); color: #fff; }
.comparison-card__state { color: var(--color-secondary); font-size: 12px; font-weight: 600; line-height: 16px; text-transform: uppercase; }
.comparison-card--use-case .comparison-card__state { color: var(--color-accent); }
.comparison-card h3 { font-size: 32px; line-height: 38px; }
.comparison-formula { display: flex; align-items: center; gap: 16px; min-height: 48px; }
.comparison-formula > div { display: flex; min-width: 0; flex-direction: column; gap: 4px; }
.comparison-formula > div:last-child { flex: 1; }
.comparison-formula small, .comparison-knowledge small { color: #828d8a; font-size: 11px; font-weight: 600; line-height: 14px; text-transform: uppercase; }
.comparison-card--use-case .comparison-formula small, .comparison-card--use-case .comparison-knowledge small { color: #cdcdcd; }
.comparison-formula b { font-size: 16px; line-height: 20px; }
.comparison-formula > span { color: var(--color-secondary); font-size: 24px; line-height: 1; }
.comparison-card--use-case .comparison-formula > span { color: #eaeae8; }
.comparison-knowledge { display: flex; flex-direction: column; gap: 12px; }
.comparison-knowledge h4 { margin: 0; font-size: 24px; font-weight: 600; line-height: 32px; }
.comparison-knowledge__items { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.comparison-knowledge__items > div { display: flex; min-width: 0; flex-direction: column; gap: 4px; }
.comparison-knowledge__items p { display: flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 600; line-height: 20px; }
.comparison-knowledge__items img, .comparison-questions img, .comparison-added img { width: 24px; height: 24px; flex: 0 0 24px; }
.comparison-questions, .comparison-added { display: flex; flex-direction: column; gap: 16px; padding: 16px 18px 20px; border-radius: 12px; }
.comparison-questions { border: 1px dashed #d1d9d6; background: var(--color-canvas); }
.comparison-added { background: var(--color-accent); color: var(--color-text); }
.comparison-questions > p, .comparison-added > p { color: var(--color-secondary); font-size: 11px; font-weight: 600; line-height: 14px; text-transform: uppercase; }
.comparison-questions ul, .comparison-added ul { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 0; padding: 0; list-style: none; }
.comparison-questions li, .comparison-added li { display: flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 600; line-height: 20px; }
.comparison-questions li { color: var(--color-secondary); }
.comparison-card__outcome { margin-top: auto; font-size: 24px; font-weight: 600; line-height: 29px; }
.support-copy { max-width: 980px; font-size: 18px; line-height: 30px; }
.case-part { display: flex; width: 100%; flex-direction: column; gap: 28px; padding-top: 32px; border-top: 1px solid var(--color-border); }
.case-part + .case-part { margin-top: 40px; }
.case-part__header { display: grid; grid-template-columns: 76px minmax(0, 780px); gap: 24px; align-items: start; }
.case-part__number { color: #7a8581; font-size: 48px; font-weight: 600; line-height: 1; letter-spacing: -.04em; }
.case-part__header > div { display: flex; flex-direction: column; gap: 12px; }
.case-part__header h3 { font-size: 28px; line-height: 36px; }
.case-part__header p { color: var(--color-secondary); font-size: 17px; line-height: 27px; }
.evidence-carousel { display: flex; width: 100%; flex-direction: column; gap: 20px; }
.evidence-viewport { width: 100%; touch-action: pan-y; }
.evidence-slide { display: flex; width: 100%; flex-direction: column; gap: 16px; margin: 0; }
.evidence-slide[hidden] { display: none; }
.illustration-frame { display: block; width: 100%; }
.illustration-frame img { width: 100%; height: auto; }
.illustration-frame.is-clickable { cursor: pointer; }
.illustration-frame.is-clickable:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 6px; }
.evidence-slide figcaption { max-width: 880px; color: var(--color-secondary); font-size: 15px; line-height: 23px; }
.evidence-slide figcaption b { color: var(--color-text); }
.evidence-controls { display: flex; align-items: center; gap: 12px; }
.icon-button { display: grid; width: 44px; height: 44px; padding: 0; place-items: center; border: 1px solid var(--color-border); border-radius: 50%; background: #fff; color: var(--color-text); cursor: pointer; }
.icon-button:hover { background: var(--color-accent); }
.icon-button:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 4px; }
.carousel-count { min-width: 60px; color: var(--color-secondary); font-size: 14px; text-align: center; }
.result-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(420px, 520px); gap: 80px; align-items: start; }
.result-copy { display: flex; flex-direction: column; gap: 24px; }
.result-cards { display: grid; gap: 16px; }
.result-card { display: flex; flex-direction: column; gap: 12px; padding: 28px; border-radius: var(--radius-md); background: var(--color-canvas); box-shadow: var(--shadow-card); }
.result-card--dark { background: var(--color-text); color: #fff; }
.result-card > p:last-child { color: var(--color-secondary); line-height: 25px; }
.result-card--dark > p:last-child { color: #d5dad8; }
.next-project--link { color: inherit; text-decoration: none; }
.next-project--link:hover { background: rgb(255 255 255 / 8%); }
.next-project--link:focus-visible { outline: 3px solid var(--color-positive); outline-offset: 4px; }
@media (max-width: 1199px) {
  :root { --page-padding: 32px; --section-padding: 96px; }
  .hero__content { padding-block: 96px; }
  .hero__media { padding-bottom: 96px; }
  .result-layout { grid-template-columns: 1fr; gap: 40px; }
  .result-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1023px) {
  :root { --section-padding: 88px; }
  .hero__content { padding-block: 88px; }
  .hero__media { padding-bottom: 88px; }
  .overview-grid, .use-case-comparison { grid-template-columns: 1fr; }
  .comparison-card { min-height: 0; }
  .case-part__header { grid-template-columns: 64px minmax(0, 1fr); }
  .case-part__number { font-size: 42px; }
}
@media (max-width: 767px) {
  :root { --page-padding: 20px; --section-padding: 72px; }
  .stack { gap: 24px; }
  h1 { font-size: 49px; line-height: 54px; }
  h2 { font-size: 30px; line-height: 38px; }
  h3 { font-size: 21px; line-height: 29px; }
  .hero__content { gap: 24px; padding-block: 72px; }
  .hero__media { padding-bottom: 72px; }
  .overview-grid, .result-cards { grid-template-columns: 1fr; }
  .overview-card { padding: 24px; }
  .hero__lead, .section-lead { font-size: 17px; line-height: 26px; }
  .meta { line-height: 22px; }
  .comparison-card { gap: 24px; padding: 24px; }
  .comparison-card h3 { font-size: 28px; line-height: 34px; }
  .comparison-formula { display: grid; min-height: 0; align-items: start; gap: 8px; }
  .comparison-formula > div:last-child { flex: initial; }
  .comparison-formula > span { justify-self: start; transform: rotate(90deg); font-size: 20px; }
  .comparison-knowledge h4 { font-size: 22px; line-height: 29px; }
  .comparison-knowledge__items { grid-template-columns: 1fr; gap: 12px; }
  .comparison-knowledge__items > div { display: grid; grid-template-columns: 52px minmax(0, 1fr); align-items: center; }
  .comparison-questions, .comparison-added { padding: 16px; }
  .comparison-questions ul, .comparison-added ul { flex-direction: column; align-items: flex-start; }
  .comparison-card__outcome { font-size: 22px; line-height: 28px; }
  .support-copy { font-size: 17px; line-height: 27px; }
  .case-part { gap: 24px; padding-top: 24px; }
  .case-part + .case-part { margin-top: 32px; }
  .case-part__header { grid-template-columns: 48px minmax(0, 1fr); gap: 16px; }
  .case-part__number { font-size: 36px; }
  .case-part__header h3 { font-size: 24px; line-height: 31px; }
  .case-part__header p { font-size: 16px; line-height: 25px; }
  .evidence-carousel { gap: 16px; }
  .evidence-slide { gap: 12px; }
  .evidence-slide figcaption { font-size: 14px; line-height: 21px; }
  .result-card { padding: 24px; }
  .product-frame__bar { align-items: flex-start; flex-direction: column; gap: 2px; }
  .product-frame__bar span { text-align: left; }
  .result-layout { gap: 32px; }
}
@media (max-width: 359px) {
  :root { --page-padding: 16px; }
  h1 { font-size: 42px; line-height: 48px; }
  h2 { font-size: 28px; line-height: 35px; }
  .comparison-card, .overview-card, .result-card { padding: 20px; }
  .case-part__header { grid-template-columns: 42px minmax(0, 1fr); gap: 12px; }
  .case-part__number { font-size: 32px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }