/* ---------- tokens ---------- */
:root {
  --bg: #f6f2ec;          /* warm paper */
  --bg-alt: #efe9e0;      /* deeper paper */
  --surface: #fffcf7;     /* card */
  --ink: #17150f;         /* headings */
  --text: #2e2a22;        /* body */
  --muted: #6d665a;
  --line: #ddd4c6;
  --line-strong: #c6bbaa;
  --accent: #c0442a;      /* terracotta */
  --accent-soft: #f2e0d8;
  --radius: 4px;
  --wrap: 1080px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

h1, h2, h3 { font-family: var(--serif); color: var(--ink); line-height: 1.12; margin: 0 0 .5em; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.3rem, 5.6vw, 4.1rem); }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.7rem); }
h3 { font-size: 1.3rem; }
h4 {
  font-family: var(--sans); font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .14em; color: var(--accent);
  margin: 0 0 .5em;
}
p { margin: 0 0 1em; }
code { font-family: var(--mono); font-size: .86em; background: var(--accent-soft); color: #96351f; padding: .1em .4em; border-radius: 3px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
.accent { color: var(--accent); font-style: italic; }
.eyebrow {
  font-family: var(--mono); font-size: .76rem; text-transform: uppercase;
  letter-spacing: .18em; color: var(--muted); margin-bottom: 1.4em;
}
.eyebrow::before {
  content: ""; display: inline-block; width: 26px; height: 1px;
  background: var(--accent); vertical-align: middle; margin-right: 12px;
}
.section { padding: 110px 0; }
.section--alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section__lead { color: var(--muted); max-width: 60ch; font-size: 1.06rem; margin-bottom: 3em; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; padding: 14px 26px; border-radius: var(--radius);
  background: var(--ink); color: #f6f2ec; font-weight: 550; font-size: .95rem;
  border: 1px solid var(--ink); transition: background .18s ease, color .18s ease;
}
.btn:hover { background: var(--accent); border-color: var(--accent); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn--ghost:hover { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn--sm { padding: 9px 17px; font-size: .85rem; }
.btn--lg { padding: 17px 38px; font-size: 1rem; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(246, 242, 236, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; gap: 26px; height: 68px; }
.nav__logo { font-family: var(--serif); font-weight: 600; font-size: 1.25rem; color: var(--ink); }
.nav__logo .dot { color: var(--accent); }
.nav__links { display: flex; gap: 28px; margin-left: auto; font-size: .92rem; color: var(--muted); }
.nav__links a { padding-bottom: 2px; border-bottom: 1px solid transparent; }
.nav__links a:hover { color: var(--ink); border-bottom-color: var(--accent); }
.lang {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: .76rem; letter-spacing: .06em;
  padding-left: 22px; border-left: 1px solid var(--line);
}
.lang__on { color: var(--accent); }
.lang a { color: var(--muted); }
.lang a:hover { color: var(--ink); }

/* ---------- hero ---------- */
.hero {
  padding: 130px 0 100px;
  background:
    linear-gradient(180deg, #fffdf9 0%, var(--bg) 62%);
  border-bottom: 1px solid var(--line);
}
.hero h1 { max-width: 26ch; }
html[lang="ru"] .hero h1 { max-width: 22ch; }
.lead {
  color: var(--text); font-size: 1.16rem; max-width: 56ch; margin-top: 1.3em;
  padding-left: 22px; border-left: 2px solid var(--accent);
}
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; margin: 2.6em 0 0; }
.hero__stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px; list-style: none; padding: 32px 0 0; margin: 5em 0 0;
  border-top: 1px solid var(--line-strong);
}
.hero__stats li { display: flex; flex-direction: column; gap: 4px; }
.hero__stats strong { font-family: var(--serif); font-size: 1.6rem; font-weight: 600; color: var(--ink); }
.hero__stats span { color: var(--muted); font-size: .9rem; line-height: 1.5; }

/* ---------- services ---------- */
.grid { display: grid; gap: 0; margin-top: 2.6em; }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card {
  background: transparent; border-top: 2px solid var(--ink);
  padding: 26px 30px 6px 0;
  transition: border-color .2s ease;
}
.card + .card { padding-left: 30px; border-left: 1px solid var(--line); }
.card:hover { border-top-color: var(--accent); }
.card__num { font-family: var(--mono); font-size: .78rem; color: var(--accent); margin-bottom: 1.6em; }
.card p { color: var(--muted); font-size: .97rem; }
.card__meta { color: var(--ink) !important; font-size: .84rem !important; font-style: italic; margin: 1.4em 0 0; }

/* ---------- cases ---------- */
.cases { display: flex; flex-direction: column; gap: 0; counter-reset: kase; }
.case {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 36px 38px; margin-bottom: 18px;
  position: relative; transition: border-color .2s ease, box-shadow .2s ease;
}
.case:hover { border-color: var(--line-strong); box-shadow: 0 10px 30px -22px rgba(23, 21, 15, .5); }
.case__head { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; margin-bottom: 1.8em; padding-bottom: 1.2em; border-bottom: 1px solid var(--line); }
.case__head h3 { margin: 0; font-size: 1.55rem; counter-increment: kase; }
.case__head h3::before {
  content: counter(kase, decimal-leading-zero);
  font-family: var(--mono); font-size: .72rem; color: var(--accent);
  vertical-align: super; margin-right: 12px; letter-spacing: .1em;
}
.tag {
  margin-left: auto; font-family: var(--mono); font-size: .68rem; text-transform: uppercase;
  letter-spacing: .12em; padding: 4px 10px; border: 1px solid var(--line-strong);
  border-radius: var(--radius); color: var(--muted); white-space: nowrap;
}
.tag--live { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.case__body { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
.case__body p { color: var(--muted); font-size: .95rem; margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 7px; list-style: none; padding: 0; margin: 28px 0 0; }
.chips li {
  font-family: var(--mono); font-size: .73rem; color: var(--muted);
  background: var(--bg-alt); border-radius: 3px; padding: 4px 9px;
}
.chips--big li { font-size: .8rem; padding: 6px 11px; background: var(--surface); border: 1px solid var(--line); }

/* ---------- steps ---------- */
.steps { list-style: none; padding: 0; margin: 2.6em 0 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; }
.steps li { padding: 0 26px; border-left: 1px solid var(--line); }
.steps li:first-child { padding-left: 0; border-left: none; }
.steps__n {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--accent); color: var(--accent);
  font-family: var(--mono); font-size: .82rem; margin-bottom: 1.2em;
}
.steps h3 { font-size: 1.16rem; }
.steps p { color: var(--muted); font-size: .94rem; margin: 0; }

/* ---------- about ---------- */
.about { display: grid; grid-template-columns: 1.5fr 1fr; gap: 60px; align-items: start; }
.about__text p { color: var(--text); max-width: 56ch; }
.about__text p:first-of-type { font-size: 1.1rem; }
.about__side { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.about__side h3 { font-family: var(--sans); font-size: .74rem; text-transform: uppercase; letter-spacing: .14em; color: var(--muted); }

/* ---------- contact ---------- */
.contact { text-align: center; padding-bottom: 130px; background: var(--bg); }
.contact .eyebrow { display: inline-block; }
.contact .section__lead { margin-left: auto; margin-right: auto; }
.contact__links {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0; margin: 0 0 3em; text-align: left;
  border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong);
}
.contact__link {
  padding: 26px 24px; display: flex; flex-direction: column; gap: 5px;
  border-left: 1px solid var(--line); transition: background .2s ease;
}
.contact__link:first-child { border-left: none; }
.contact__link:hover { background: var(--surface); }
.contact__label { font-family: var(--mono); font-size: .7rem; text-transform: uppercase; letter-spacing: .14em; color: var(--muted); }
.contact__value { font-family: var(--serif); font-size: 1.08rem; color: var(--ink); word-break: break-word; }
.contact__link:hover .contact__value { color: var(--accent); }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 30px 0; color: var(--muted); font-size: .86rem; background: var(--bg-alt); }
.footer__inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .grid--3, .case__body, .contact__links { grid-template-columns: 1fr 1fr; }
  .card + .card { padding-left: 30px; }
  .card:nth-child(odd) { padding-left: 0; border-left: none; }
  .steps { grid-template-columns: 1fr 1fr; row-gap: 34px; }
  .steps li:nth-child(odd) { padding-left: 0; border-left: none; }
  .about { grid-template-columns: 1fr; gap: 38px; }
  .nav__links { display: none; }
  .lang { margin-left: auto; }
  .contact__link:nth-child(odd) { border-left: none; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .section { padding: 76px 0; }
  .hero { padding: 80px 0 66px; }
  h1 { font-size: 2.15rem; }
  html[lang="ru"] h1 { font-size: 1.95rem; }
  h2 { font-size: 1.7rem; }
  .lead { font-size: 1.02rem; padding-left: 16px; }
  .eyebrow { letter-spacing: .12em; font-size: .7rem; }
  .eyebrow::before { width: 16px; margin-right: 8px; }
  .grid--3, .case__body, .contact__links, .steps, .hero__stats { grid-template-columns: 1fr; }
  .card, .card + .card { padding-left: 0; border-left: none; padding-right: 0; }
  .case { padding: 26px 22px; }
  .case__head h3 { font-size: 1.3rem; }
  .tag { margin-left: 0; }
  .steps li { padding-left: 0; border-left: none; }
  .contact__link { border-left: none; border-top: 1px solid var(--line); }
  .contact__link:first-child { border-top: none; }
  .hero__stats { gap: 20px; }
}