:root {
  --vdai-bg: #f5f0e8;
  --vdai-paper: #fffdf8;
  --vdai-ink: #151513;
  --vdai-muted: #69665e;
  --vdai-line: #d7d0c4;
  --vdai-accent: #dfff53;
  --vdai-terra: #b85638;
  --vdai-green: #1e6f4b;
  --vdai-blue: #2e5f91;
  --vdai-max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.canonical-site {
  margin: 0;
  overflow-x: hidden;
  background: var(--vdai-bg);
  color: var(--vdai-ink);
  font: 16px/1.55 Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.canonical-site a { color: inherit; }
.site-skip { position: fixed; left: 14px; top: 10px; z-index: 100; transform: translateY(-180%); background: var(--vdai-ink); color: white; padding: 9px 13px; }
.site-skip:focus { transform: translateY(0); }
.site-wrap { width: min(calc(100% - 40px), var(--vdai-max)); margin-inline: auto; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid var(--vdai-line);
  background: color-mix(in srgb, var(--vdai-bg) 94%, transparent);
  backdrop-filter: blur(16px);
}
.site-header__inner { min-height: 70px; display: flex; align-items: center; gap: 24px; }
.site-brand { flex: 0 0 auto; font-size: 21px; font-weight: 900; letter-spacing: -.055em; text-decoration: none; }
.site-brand span { color: var(--vdai-terra); }
.site-nav { display: flex; align-items: center; gap: 20px; margin-left: auto; }
.site-nav a { color: #4b4943; font-size: 14px; font-weight: 650; text-decoration: none; white-space: nowrap; }
.site-nav a[aria-current="page"] { color: var(--vdai-ink); text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 7px; }
.site-cta, .site-button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 11px 17px; border: 1px solid var(--vdai-ink); background: var(--vdai-ink); color: white !important; font-weight: 800; text-decoration: none; cursor: pointer; }
.site-button--accent { background: var(--vdai-accent); color: var(--vdai-ink) !important; }
.site-button--ghost { background: transparent; color: var(--vdai-ink) !important; }
.site-main { display: block; }
.site-hero { position: relative; overflow: hidden; padding: clamp(72px, 10vw, 132px) 0 76px; border-bottom: 1px solid var(--vdai-line); }
.site-hero:before, .site-hero:after { content: ""; position: absolute; pointer-events: none; border-radius: 50%; filter: blur(90px); opacity: .62; }
.site-hero:before { width: 330px; height: 330px; right: 2%; top: -120px; background: rgba(216, 255, 73, .42); }
.site-hero:after { width: 250px; height: 250px; right: 26%; bottom: -130px; background: rgba(184, 86, 56, .18); }
.site-hero__grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(34px, 6vw, 82px); align-items: end; }
.site-kicker { margin: 0 0 18px; color: var(--vdai-terra); font-size: 12px; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
.site-hero h1, .page-hero h1 { max-width: 900px; margin: 0; font-size: clamp(45px, 7.4vw, 88px); line-height: .95; letter-spacing: -.073em; }
.site-hero h1 span { display: block; color: var(--vdai-terra); }
.site-lede { max-width: 720px; margin: 28px 0 0; color: #3f3d38; font-size: clamp(19px, 2.3vw, 26px); line-height: 1.35; }
.site-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 31px; }
.hero-proof { display: grid; gap: 1px; border: 1px solid var(--vdai-ink); background: var(--vdai-ink); }
.hero-proof div { padding: 21px; background: var(--vdai-paper); }
.hero-proof b { display: block; margin-bottom: 4px; font-size: 18px; }
.hero-proof span { color: var(--vdai-muted); font-size: 13px; }
.site-section { padding: clamp(68px, 9vw, 112px) 0; border-bottom: 1px solid var(--vdai-line); }
.site-section--paper { background: var(--vdai-paper); }
.site-section--dark { background: var(--vdai-ink); color: #f7f3ea; }
.site-section__head { display: grid; grid-template-columns: .55fr 1.45fr; gap: 30px; align-items: start; margin-bottom: 42px; }
.site-section__head h2 { max-width: 800px; margin: 0; font-size: clamp(34px, 5.4vw, 64px); line-height: 1; letter-spacing: -.062em; }
.site-section__head p { max-width: 660px; margin: 15px 0 0; color: var(--vdai-muted); font-size: 18px; }
.site-section--dark .site-section__head p { color: #c8c5bd; }
.site-index { color: var(--vdai-terra); font: 800 12px/1.3 "JetBrains Mono", monospace; letter-spacing: .08em; text-transform: uppercase; }
.outcome-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; border: 1px solid var(--vdai-line); background: var(--vdai-line); }
.outcome-card { min-height: 300px; display: flex; flex-direction: column; padding: 25px; background: var(--vdai-paper); text-decoration: none; transition: background .18s ease, transform .18s ease; }
.outcome-card:hover { position: relative; z-index: 2; background: #f1f7d7; transform: translateY(-4px); }
.outcome-card small { color: var(--vdai-terra); font: 800 11px/1.3 "JetBrains Mono", monospace; }
.outcome-card h3 { margin: auto 0 12px; font-size: 25px; line-height: 1.05; letter-spacing: -.045em; }
.outcome-card p { margin: 0; color: var(--vdai-muted); font-size: 14px; }
.outcome-card strong { display: block; margin-top: 18px; font-size: 13px; }
.value-flow { display: grid; grid-template-columns: repeat(5, 1fr); border: 1px solid #44433e; }
.value-flow div { min-height: 170px; padding: 23px 18px; border-right: 1px solid #44433e; }
.value-flow div:last-child { border-right: 0; }
.value-flow b { display: block; color: var(--vdai-accent); font-size: 27px; letter-spacing: -.05em; }
.value-flow span { display: block; margin-top: 28px; color: #d2cfc7; font-size: 14px; }
.problemos-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; border: 1px solid var(--vdai-line); background: var(--vdai-line); }
.problemos-grid article { min-height: 245px; padding: 23px; background: var(--vdai-paper); }
.problemos-grid article > b { display: inline-flex; width: 44px; height: 44px; align-items: center; justify-content: center; border: 1px solid var(--vdai-ink); background: var(--vdai-accent); font: 900 18px/1 "JetBrains Mono", monospace; }
.problemos-grid h3 { margin: 56px 0 9px; font-size: 22px; letter-spacing: -.04em; }
.problemos-grid p { margin: 0; color: var(--vdai-muted); font-size: 14px; }
.page-hero { padding: 78px 0 66px; border-bottom: 1px solid var(--vdai-line); background: var(--vdai-paper); }
.page-hero h1 { max-width: 980px; font-size: clamp(43px, 7vw, 80px); }
.page-hero p { max-width: 760px; margin: 24px 0 0; color: #46433e; font-size: 20px; }
.product-list { display: grid; gap: 18px; }
.product-row { display: grid; grid-template-columns: .5fr 1.1fr 1.2fr .65fr; gap: 24px; align-items: start; padding: 28px; border: 1px solid var(--vdai-line); background: var(--vdai-paper); scroll-margin-top: 92px; }
.product-row__code { color: var(--vdai-terra); font: 800 12px/1.4 "JetBrains Mono", monospace; }
.product-row h2 { margin: 0 0 8px; font-size: 31px; line-height: 1.05; letter-spacing: -.045em; }
.product-row p { margin: 0; color: var(--vdai-muted); }
.product-output { display: grid; gap: 9px; }
.product-output span { padding-left: 16px; position: relative; font-size: 14px; }
.product-output span:before { content: "→"; position: absolute; left: 0; color: var(--vdai-terra); }
.product-row__action { display: grid; gap: 9px; }
.test-shell { display: grid; grid-template-columns: .65fr 1.35fr; gap: 24px; align-items: start; }
.test-picker { position: sticky; top: 92px; display: grid; gap: 8px; }
.test-picker button { width: 100%; padding: 15px; border: 1px solid var(--vdai-line); background: var(--vdai-paper); color: var(--vdai-ink); font: 750 14px/1.3 inherit; text-align: left; cursor: pointer; }
.test-picker button[aria-pressed="true"] { border-color: var(--vdai-ink); background: var(--vdai-ink); color: white; }
.test-panel { padding: clamp(24px, 4vw, 44px); border: 1px solid var(--vdai-ink); background: var(--vdai-paper); }
.test-panel h2 { margin: 0; font-size: clamp(31px, 4vw, 49px); line-height: 1; letter-spacing: -.055em; }
.test-panel__intro { color: var(--vdai-muted); font-size: 17px; }
.test-question { padding: 22px 0; border-top: 1px solid var(--vdai-line); }
.test-question legend { margin-bottom: 13px; font-weight: 800; }
.test-options { display: grid; gap: 8px; }
.test-options label { display: flex; gap: 10px; align-items: flex-start; padding: 11px 12px; border: 1px solid var(--vdai-line); cursor: pointer; }
.test-options label:has(input:checked) { border-color: var(--vdai-ink); background: #eef6cf; }
.test-result { margin-top: 28px; padding: 26px; border: 1px solid var(--vdai-ink); background: var(--vdai-ink); color: white; }
.test-result[hidden] { display: none; }
.test-result h3 { margin: 0 0 8px; font-size: 29px; }
.test-result p { color: #d6d2c8; }
.artifact-card { margin: 19px 0; padding: 18px; background: white; color: var(--vdai-ink); }
.artifact-card b { display: block; margin-bottom: 8px; }
.proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.proof-card { min-height: 240px; padding: 25px; border: 1px solid var(--vdai-line); background: var(--vdai-paper); }
.proof-card .status { display: inline-flex; padding: 5px 8px; background: #ece8df; font: 800 10px/1.2 "JetBrains Mono", monospace; text-transform: uppercase; }
.proof-card .status--verified { background: #dff1d8; color: #215d33; }
.proof-card h2, .proof-card h3 { margin: 42px 0 10px; font-size: 24px; line-height: 1.08; letter-spacing: -.04em; }
.proof-card p { color: var(--vdai-muted); font-size: 14px; }
.site-footer { padding: 34px 0; background: var(--vdai-ink); color: #ebe7de; }
.site-footer__inner { display: flex; justify-content: space-between; gap: 28px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 16px; }
.site-footer a { color: #d2cec5; font-size: 13px; text-decoration: none; }
.site-note { padding: 15px 17px; border-left: 3px solid var(--vdai-terra); background: #eee8de; color: #4a4740; font-size: 14px; }

@media (max-width: 980px) {
  .site-header__inner { align-items: flex-start; flex-wrap: wrap; padding-block: 11px; gap: 10px 18px; }
  .site-nav { order: 3; width: 100%; overflow-x: auto; padding-bottom: 7px; }
  .site-cta { margin-left: auto; min-height: 42px; }
  .site-hero__grid, .test-shell { grid-template-columns: 1fr; }
  .outcome-grid { grid-template-columns: repeat(2, 1fr); }
  .outcome-card:last-child { grid-column: 1 / -1; }
  .value-flow { grid-template-columns: 1fr; }
  .value-flow div { min-height: 0; border-right: 0; border-bottom: 1px solid #44433e; }
  .problemos-grid { grid-template-columns: repeat(2, 1fr); }
  .problemos-grid article:last-child { grid-column: 1 / -1; }
  .product-row { grid-template-columns: .35fr 1.15fr 1fr; }
  .product-row__action { grid-column: 2 / -1; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .test-picker { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .site-wrap { width: min(calc(100% - 28px), var(--vdai-max)); }
  .site-brand { font-size: 19px; }
  .site-nav { gap: 15px; }
  .site-nav a { font-size: 12px; }
  .site-cta { padding: 8px 11px; font-size: 12px; }
  .site-hero { padding-top: 56px; }
  .site-hero h1, .page-hero h1 { font-size: clamp(42px, 13vw, 58px); }
  .site-section__head { grid-template-columns: 1fr; gap: 12px; }
  .outcome-grid, .proof-grid { grid-template-columns: 1fr; }
  .problemos-grid { grid-template-columns: 1fr; }
  .problemos-grid article, .problemos-grid article:last-child { min-height: 210px; grid-column: auto; }
  .outcome-card, .outcome-card:last-child { min-height: 230px; grid-column: auto; }
  .product-row { grid-template-columns: 1fr; gap: 13px; padding: 22px; }
  .product-row__action { grid-column: auto; grid-template-columns: 1fr; }
  .test-picker { grid-template-columns: 1fr; }
  .site-footer__inner { display: grid; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *:before, *:after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}