:root {
  --color-bg: #f6f0e6;
  --color-surface: #fffaf0;
  --color-surface-alt: #ece0cd;
  --color-text: #1f1b18;
  --color-muted: #6f6558;
  --color-primary: #3b2d83;
  --color-primary-dark: #21184f;
  --color-secondary: #a9672d;
  --color-accent: #158f7a;
  --color-border: #d7c8b4;
  --font-heading: Georgia, 'Times New Roman', serif;
  --font-body: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 28px;
  --shadow-soft: 0 18px 45px rgba(43, 33, 18, .12);
  --shadow-ink: 5px 5px 0 rgba(59,45,131,.18);
  --container: 1160px;
  --section: clamp(58px, 8vw, 112px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.65;
  background:
    radial-gradient(circle at 10% 10%, rgba(21,143,122,.08), transparent 28%),
    radial-gradient(circle at 90% 0%, rgba(169,103,45,.11), transparent 22%),
    repeating-linear-gradient(0deg, rgba(31,27,24,.025) 0 1px, transparent 1px 32px),
    var(--color-bg);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(90deg, rgba(31,27,24,.035) 1px, transparent 1px);
  background-size: 72px 100%;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  z-index: -1;
}

img, svg { max-width: 100%; height: auto; }
a { color: var(--color-primary); text-decoration-thickness: .08em; text-underline-offset: .22em; }
a:hover { color: var(--color-secondary); }
:focus-visible { outline: 3px solid rgba(21,143,122,.55); outline-offset: 4px; border-radius: 4px; }

.container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
.section { padding-block: var(--section); }
.section-tight { padding-block: clamp(34px, 5vw, 70px); }
.kicker {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: .79rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-secondary);
}
.kicker::before { content: "▣"; color: var(--color-accent); font-size: .85em; }

h1, h2, h3, .display {
  font-family: var(--font-heading);
  line-height: 1.05;
  letter-spacing: -.035em;
  color: var(--color-text);
}
h1 { font-size: clamp(2.75rem, 8vw, 6.7rem); margin: 0; }
h2 { font-size: clamp(2rem, 4vw, 4rem); margin: 0 0 1.1rem; }
h3 { font-size: clamp(1.3rem, 2vw, 1.9rem); margin: 0 0 .75rem; }
p { margin: 0 0 1rem; }
.lead { font-size: clamp(1.08rem, 2vw, 1.35rem); color: var(--color-muted); max-width: 760px; }
.small { font-size: .92rem; color: var(--color-muted); }
.mono { font-family: var(--font-mono); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 240, 230, .86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(215,200,180,.8);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 76px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: .72rem;
  font-weight: 800;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -.02em;
}
.logo-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-text);
  background: var(--color-surface);
  box-shadow: 4px 4px 0 rgba(21,143,122,.18);
  font-family: var(--font-mono);
  color: var(--color-primary-dark);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(.45rem, 1vw, 1rem);
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-list a {
  display: inline-flex;
  padding: .55rem .7rem;
  color: var(--color-muted);
  text-decoration: none;
  border-radius: 999px;
  font-size: .95rem;
}
.nav-list a:hover, .nav-list a[aria-current="page"] {
  color: var(--color-primary-dark);
  background: rgba(59,45,131,.08);
}
.header-action { display: flex; align-items: center; gap: .75rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  min-height: 46px;
  padding: .82rem 1.05rem;
  border: 1px solid var(--color-text);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 750;
  background: var(--color-surface);
  box-shadow: 4px 4px 0 rgba(31,27,24,.16);
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(31,27,24,.16);
  color: var(--color-text);
}
.btn-primary { background: var(--color-primary); color: #fffaf0; border-color: var(--color-primary-dark); }
.btn-primary:hover { background: var(--color-primary-dark); color: #fffaf0; }
.btn-quiet { box-shadow: none; border-color: var(--color-border); background: transparent; color: var(--color-primary-dark); }
.btn-quiet:hover { box-shadow: 4px 4px 0 rgba(169,103,45,.2); }

.hero-lab {
  position: relative;
  padding: clamp(46px, 7vw, 96px) 0 clamp(52px, 7vw, 86px);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, .78fr);
  gap: clamp(28px, 6vw, 76px);
  align-items: center;
}
.domain-tag {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  margin-bottom: 1.15rem;
  padding: .48rem .7rem;
  border: 1px solid var(--color-border);
  background: rgba(255,250,240,.72);
  font-family: var(--font-mono);
  font-size: .86rem;
  color: var(--color-muted);
}
.domain-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 0 5px rgba(21,143,122,.12); }
.hero-title .caret-word {
  position: relative;
  display: inline-block;
  color: var(--color-primary-dark);
}
.hero-title .caret-word::after {
  content: "";
  display: inline-block;
  width: .08em;
  height: .82em;
  margin-left: .04em;
  background: var(--color-secondary);
  animation: caretBlink 1.05s steps(1) infinite;
}
@keyframes caretBlink { 50% { opacity: 0; } }
.hero-copy { margin-top: 1.35rem; max-width: 790px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 2rem; }
.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .75rem;
  margin-top: 2rem;
  max-width: 800px;
}
.proof-cell {
  padding: .8rem;
  border-left: 2px solid var(--color-secondary);
  background: rgba(255,250,240,.58);
}
.proof-cell strong { display: block; font-family: var(--font-heading); font-size: 1.25rem; line-height: 1.1; }
.proof-cell span { font-size: .86rem; color: var(--color-muted); }

.type-feed {
  position: relative;
  padding: clamp(1rem, 3vw, 1.45rem);
  border: 1px solid var(--color-text);
  background:
    linear-gradient(180deg, rgba(255,250,240,.92), rgba(236,224,205,.88)),
    repeating-linear-gradient(0deg, transparent 0 31px, rgba(31,27,24,.06) 31px 32px);
  box-shadow: var(--shadow-ink);
  transform: rotate(.6deg);
}
.type-feed::before {
  content: "aitext.ru / редакторский прогон";
  display: block;
  margin: -.2rem 0 1rem;
  padding-bottom: .6rem;
  border-bottom: 1px dashed var(--color-border);
  font-family: var(--font-mono);
  color: var(--color-muted);
  font-size: .78rem;
}
.feed-row {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: .9rem;
  padding: .72rem 0;
  border-bottom: 1px solid rgba(215,200,180,.72);
  font-size: .95rem;
}
.feed-row:last-child { border-bottom: 0; }
.feed-label { font-family: var(--font-mono); color: var(--color-secondary); }
.feed-text strong { color: var(--color-primary-dark); }
.feed-stamp {
  position: absolute;
  right: -12px;
  bottom: -15px;
  width: 118px;
  height: 118px;
  display: grid;
  place-items: center;
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  color: var(--color-accent);
  font-family: var(--font-mono);
  text-align: center;
  font-size: .74rem;
  line-height: 1.2;
  transform: rotate(-12deg);
  background: rgba(255,250,240,.78);
}

.split { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(28px, 5vw, 70px); align-items: start; }
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(20px, 3vw, 34px); }
.three-col { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(18px, 2.5vw, 28px); }
.four-col { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(16px, 2vw, 24px); }

.prompt-tape {
  position: relative;
  display: block;
  padding: 1rem 1.1rem 1rem 3.4rem;
  border: 1px dashed var(--color-secondary);
  background: rgba(255,250,240,.72);
  font-family: var(--font-mono);
  color: var(--color-primary-dark);
}
.prompt-tape::before {
  content: ">";
  position: absolute;
  left: 1rem;
  top: .85rem;
  width: 1.6rem;
  height: 1.6rem;
  display: grid;
  place-items: center;
  background: var(--color-secondary);
  color: #fffaf0;
}

.token-ruler {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1px;
  min-height: 40px;
  padding: .4rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.token-ruler span { background: rgba(59,45,131,.12); border-radius: 2px; }
.token-ruler span:nth-child(3n) { background: rgba(21,143,122,.18); }
.token-ruler span:nth-child(5n) { background: rgba(169,103,45,.2); }

.draft-card {
  position: relative;
  padding: clamp(1.1rem, 2.2vw, 1.6rem);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: 0 1px 0 rgba(31,27,24,.07);
}
.draft-card::before {
  content: attr(data-label);
  position: absolute;
  top: -13px;
  left: 1rem;
  padding: .2rem .5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--color-muted);
}
.draft-card.lift { box-shadow: var(--shadow-soft); border-color: rgba(31,27,24,.25); }
.draft-card.angled { transform: rotate(-.45deg); }
.draft-card.angled-alt { transform: rotate(.55deg); }

.human-margin {
  position: relative;
  padding: 1.2rem 1.2rem 1.2rem 4.2rem;
  border: 1px solid var(--color-border);
  background: linear-gradient(90deg, rgba(169,103,45,.09) 0 54px, var(--color-surface) 54px);
}
.human-margin::before {
  content: "ред";
  position: absolute;
  left: 1rem;
  top: 1.1rem;
  font-family: var(--font-mono);
  color: var(--color-secondary);
  writing-mode: vertical-rl;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.cursor-badge {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .42rem .62rem;
  border: 1px solid var(--color-border);
  background: rgba(255,250,240,.72);
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--color-muted);
}
.cursor-badge::after { content: ""; width: 8px; height: 18px; background: var(--color-accent); animation: caretBlink 1.05s steps(1) infinite; }

.text-weave {
  position: relative;
  padding: clamp(1.4rem, 3vw, 2.2rem);
  background: var(--color-primary-dark);
  color: #fffaf0;
  border-radius: var(--radius-lg) var(--radius-sm) var(--radius-lg) var(--radius-sm);
  overflow: hidden;
}
.text-weave::before {
  content: "слова · смысл · факт · тон · запрос · выдача ·";
  position: absolute;
  inset: auto -20px 14px auto;
  font-family: var(--font-mono);
  color: rgba(255,250,240,.12);
  font-size: clamp(2rem, 5vw, 4rem);
  white-space: nowrap;
}
.text-weave h3, .text-weave p { color: #fffaf0; position: relative; }
.text-weave p { color: rgba(255,250,240,.78); }

.link-strip {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.4rem;
}
.link-strip a {
  display: inline-flex;
  padding: .55rem .75rem;
  border: 1px solid var(--color-border);
  background: rgba(255,250,240,.7);
  text-decoration: none;
  color: var(--color-primary-dark);
}
.link-strip a:hover { border-color: var(--color-secondary); transform: translateY(-1px); }

.service-ledger {
  border: 1px solid var(--color-text);
  background: var(--color-surface);
  box-shadow: var(--shadow-ink);
}
.ledger-row {
  display: grid;
  grid-template-columns: 1.05fr .9fr .9fr;
  gap: 1px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-border);
}
.ledger-row > * {
  padding: 1rem;
  background: var(--color-surface);
}
.ledger-row:last-child { border-bottom: 0; }
.ledger-head > * { background: var(--color-primary-dark); color: #fffaf0; font-family: var(--font-mono); font-size: .9rem; }

.pipeline {
  counter-reset: step;
  display: grid;
  gap: 1rem;
}
.pipeline-step {
  counter-increment: step;
  position: relative;
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--color-border);
  background: rgba(255,250,240,.72);
}
.pipeline-step::before {
  content: counter(step, decimal-leading-zero);
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border: 1px solid var(--color-text);
  background: var(--color-surface-alt);
  font-family: var(--font-mono);
  color: var(--color-primary-dark);
}

.article-shell {
  display: grid;
  grid-template-columns: minmax(190px, .28fr) minmax(0, .72fr);
  gap: clamp(24px, 5vw, 70px);
  align-items: start;
}
.article-toc {
  position: sticky;
  top: 100px;
  padding: 1rem;
  border: 1px solid var(--color-border);
  background: rgba(255,250,240,.76);
}
.article-toc a { display: block; padding: .45rem 0; color: var(--color-muted); text-decoration: none; border-bottom: 1px dashed rgba(215,200,180,.8); }
.article-toc a:hover { color: var(--color-primary); }
.article-body article {
  padding: clamp(1.2rem, 4vw, 2.4rem);
  background: rgba(255,250,240,.86);
  border: 1px solid var(--color-border);
}
.article-body h2 { margin-top: 2.6rem; }
.article-body h2:first-child { margin-top: 0; }
.article-body ul, .article-body ol { padding-left: 1.3rem; }
.article-body li { margin-bottom: .55rem; }

.check-list { display: grid; gap: .8rem; padding: 0; margin: 1rem 0; list-style: none; }
.check-list li { position: relative; padding: .8rem 1rem .8rem 2.6rem; background: rgba(236,224,205,.5); border-left: 3px solid var(--color-accent); }
.check-list li::before { content: "✓"; position: absolute; left: .95rem; color: var(--color-accent); font-weight: 800; }

.faq-board {
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: clamp(24px, 5vw, 60px);
}
.faq-stack { display: grid; gap: 1rem; }
details.qa-slip {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: 3px 3px 0 rgba(59,45,131,.08);
}
.qa-slip summary {
  cursor: pointer;
  padding: 1.05rem 1.1rem;
  font-weight: 800;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}
.qa-slip summary::-webkit-details-marker { display: none; }
.qa-slip summary::after { content: "+"; font-family: var(--font-mono); color: var(--color-secondary); }
.qa-slip[open] summary::after { content: "–"; }
.qa-slip div { padding: 0 1.1rem 1.1rem; color: var(--color-muted); }

.brief-grid {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(320px, .7fr);
  gap: clamp(26px, 5vw, 64px);
  align-items: start;
}
.brief-form {
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 1px solid var(--color-text);
  background: var(--color-surface);
  box-shadow: var(--shadow-ink);
}
.form-row { display: grid; gap: .45rem; margin-bottom: 1rem; }
label { font-weight: 750; }
input, textarea, select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--color-border);
  background: #fffdfa;
  padding: .82rem .9rem;
  font: inherit;
  color: var(--color-text);
  border-radius: var(--radius-sm);
}
textarea { min-height: 128px; resize: vertical; }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 4px rgba(21,143,122,.13); }
.form-note { font-size: .88rem; color: var(--color-muted); margin-top: .9rem; }

.contact-card {
  padding: 1.3rem;
  border: 1px solid var(--color-border);
  background: rgba(255,250,240,.78);
}
.contact-card dl { margin: 0; display: grid; gap: .7rem; }
.contact-card dt { font-family: var(--font-mono); color: var(--color-muted); font-size: .82rem; }
.contact-card dd { margin: 0; font-weight: 800; }

.image-frame {
  border: 1px solid var(--color-border);
  background: rgba(255,250,240,.68);
  padding: 1rem;
  box-shadow: 0 8px 26px rgba(43,33,18,.08);
}
.image-frame img { display: block; margin-inline: auto; }
.image-caption { margin-top: .75rem; font-size: .88rem; color: var(--color-muted); font-family: var(--font-mono); }

.breadcrumbs { font-size: .9rem; color: var(--color-muted); padding-top: 1.2rem; }
.breadcrumbs a { color: var(--color-muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--color-primary); }
.page-hero { padding: clamp(42px, 7vw, 82px) 0 clamp(24px, 5vw, 56px); }
.page-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, .48fr); gap: clamp(24px, 5vw, 60px); align-items: end; }

.site-footer {
  padding: 42px 0;
  border-top: 1px solid var(--color-border);
  background: rgba(31,27,24,.04);
}
.footer-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 2rem;
  align-items: start;
}
.footer-links { display: flex; flex-wrap: wrap; gap: .8rem 1.2rem; justify-content: flex-end; }
.footer-links a { color: var(--color-muted); text-decoration: none; }
.footer-links a:hover { color: var(--color-primary); }

@media (max-width: 940px) {
  .header-inner { min-height: auto; padding: .9rem 0; align-items: flex-start; }
  .nav-list { flex-wrap: wrap; justify-content: flex-end; }
  .hero-grid, .split, .two-col, .three-col, .four-col, .faq-board, .brief-grid, .page-hero-grid, .article-shell, .footer-grid { grid-template-columns: 1fr; }
  .article-toc { position: static; }
  .hero-proof { grid-template-columns: 1fr; }
  .ledger-row { grid-template-columns: 1fr; }
  .ledger-head { display: none; }
  .footer-links { justify-content: flex-start; }
}

@media (max-width: 680px) {
  .container { width: min(100% - 28px, var(--container)); }
  h1 { font-size: clamp(2.35rem, 14vw, 4.2rem); }
  .header-inner { flex-direction: column; }
  .nav-list { justify-content: flex-start; gap: .25rem; }
  .nav-list a { padding: .42rem .55rem; }
  .hero-actions, .link-strip { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
  .feed-row { grid-template-columns: 1fr; gap: .2rem; }
  .feed-stamp { width: 92px; height: 92px; font-size: .62rem; right: -8px; bottom: -8px; }
  .pipeline-step { grid-template-columns: 1fr; }
  .human-margin { padding-left: 1.2rem; background: var(--color-surface); }
  .human-margin::before { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}
.mt-18 { margin-top: 18px; }
.mt-34 { margin-top: 34px; }