:root {
  --brand: #009cf3;
  --brand-dark: #007ec6;
  --brand-soft: #eaf6ff;
  --ink: #10151c;
  --ink-soft: #4a5563;
  --line: #e3e8ef;
  --bg: #ffffff;
  --bg-soft: #f6f9fc;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-soft: rgba(0, 156, 243, .14);
    --ink: #e9edf3;
    --ink-soft: #a3adbb;
    --line: #232a35;
    --bg: #0f141a;
    --bg-soft: #141b23;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* --- шапка --- */
header { border-bottom: 1px solid var(--line); }
.head { display: flex; align-items: center; gap: 24px; padding: 18px 0; }
.logo {
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.logo b { color: var(--brand); font-weight: 700; }
.logo em { font-style: normal; font-weight: 600; color: var(--ink-soft); }
.head nav { margin-left: auto; display: flex; gap: 22px; align-items: center; font-size: 15px; }
.head nav a { color: var(--ink-soft); text-decoration: none; }
.head nav a:hover { color: var(--brand); }
@media (max-width: 720px) {
  .head { flex-wrap: wrap; gap: 12px; }
  .head nav { margin-left: 0; width: 100%; gap: 16px; font-size: 14px; flex-wrap: wrap; }
}

.btn {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  padding: 10px 18px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid var(--brand);
}
.btn:hover { background: var(--brand-dark); border-color: var(--brand-dark); }
.btn--ghost { background: transparent; color: var(--brand); }
.btn--ghost:hover { background: var(--brand-soft); color: var(--brand-dark); }
.btn--sm { padding: 7px 15px; font-size: 14px; border-radius: 9px; }

/* --- герой --- */
.hero { padding: 76px 0 60px; }
.hero h1 {
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  max-width: 20ch;
  text-wrap: balance;
}
.hero .lead { font-size: clamp(17px, 2vw, 19px); color: var(--ink-soft); max-width: 60ch; margin: 0 0 28px; }
.hero .actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.hero .beta {
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero .beta::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px var(--brand-soft);
  flex: none;
}

/* --- возможности --- */
.features { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 56px 0; }
.grid { display: grid; gap: 28px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.feature h3 { font-size: 17px; margin: 0 0 6px; }
.feature p { margin: 0; color: var(--ink-soft); font-size: 15px; }
.feature .ico {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--brand-soft); color: var(--brand);
  display: grid; place-items: center; margin-bottom: 12px;
  font-size: 19px;
}

/* --- демо --- */
.demo { padding: 60px 0; }
.demo h2, .about h2 { font-size: 26px; letter-spacing: -0.01em; margin: 0 0 10px; }
.demo .lead { color: var(--ink-soft); max-width: 64ch; margin: 0 0 28px; }
.shots { display: grid; gap: 18px; grid-template-columns: 1fr; }
@media (min-width: 760px) {
  .shots { grid-template-columns: repeat(2, 1fr); }
}
.shot {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-soft);
  padding: 0;
  font: inherit;
  text-align: left;
  color: inherit;
  cursor: zoom-in;
}
.shot:hover { border-color: var(--brand); }
.shot img { display: block; width: 100%; height: auto; border-bottom: 1px solid var(--line); }
.shot span { display: block; padding: 12px 14px; font-size: 14px; color: var(--ink-soft); }
.demo .note {
  margin: 28px 0 0;
  padding: 16px 18px;
  border-radius: 14px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 15px;
  color: var(--ink-soft);
}
.demo .note strong { color: var(--ink); }
.demo .after { margin-top: 24px; }

/* --- лайтбокс --- */
.lightbox {
  position: fixed;
  inset: 0;
  border: 0;
  max-width: none;
  max-height: none;
  z-index: 50;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgba(6, 10, 15, .88);
  cursor: zoom-out;
}
.lightbox[open] { display: grid; }
.lightbox img {
  max-width: 100%;
  max-height: calc(100vh - 48px);
  border-radius: 10px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, .5);
}
.lightbox .close {
  position: absolute;
  top: 14px; right: 18px;
  background: none;
  border: 0;
  color: #fff;
  font-size: 30px;
  line-height: 1;
  cursor: pointer;
  opacity: .75;
}
.lightbox .close:hover { opacity: 1; }

/* --- о компании --- */
.about { padding: 56px 0; }
.about p { color: var(--ink-soft); max-width: 70ch; }

/* --- правовые страницы --- */
.doc { padding: 48px 0 64px; }
.doc h1 { font-size: clamp(26px, 4vw, 34px); letter-spacing: -0.02em; margin: 0 0 6px; text-wrap: balance; }
.doc .meta { color: var(--ink-soft); font-size: 14px; margin: 0 0 36px; }
.doc section { max-width: 76ch; margin-bottom: 34px; }
.doc h2 { font-size: 19px; margin: 0 0 12px; letter-spacing: -0.01em; }
.doc p, .doc li { color: var(--ink-soft); }
.doc p { margin: 0 0 12px; }
.doc ol.items { list-style: none; padding: 0; margin: 0; counter-reset: item; }
.doc ol.items > li { margin: 0 0 12px; padding-left: 42px; position: relative; counter-increment: item; }
.doc ol.items > li::before {
  content: counter(item) '.';
  position: absolute;
  left: 0;
  width: 34px;
  text-align: right;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}
.doc ul { margin: 0 0 12px; padding-left: 22px; }
.doc ul li { margin-bottom: 6px; }
.doc strong { color: var(--ink); }
.doc a:not(.btn) { color: var(--brand); }
.doc .callout {
  border-left: 3px solid var(--brand);
  background: var(--bg-soft);
  padding: 14px 18px;
  border-radius: 0 10px 10px 0;
  margin: 0 0 12px;
}
.doc .callout p:last-child { margin-bottom: 0; }
.doc .back { display: inline-block; margin-bottom: 18px; font-size: 15px; color: var(--ink-soft); text-decoration: none; }
.doc .back:hover { color: var(--brand); }

/* --- подвал --- */
footer { border-top: 1px solid var(--line); padding: 32px 0 48px; font-size: 14px; color: var(--ink-soft); }
footer .cols { display: grid; gap: 24px 20px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
footer strong { color: var(--ink); font-weight: 600; }
footer a { color: var(--brand); text-decoration: none; }
footer a:hover { text-decoration: underline; }
footer .legal { margin-top: 26px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 13px; }

/* --- блог --- */
.posts { display: flex; flex-direction: column; gap: 14px; margin: 28px 0 0; }
.post-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
  text-decoration: none;
  color: inherit;
  background: var(--bg-soft);
}
.post-card:hover { border-color: var(--brand); }
.post-card time { font-size: 13px; color: var(--ink-soft); }
.post-card h2 { font-size: 19px; margin: 6px 0 8px; letter-spacing: -0.01em; }
.post-card p { margin: 0; color: var(--ink-soft); font-size: 15px; }

.article { padding: 40px 0 64px; }
.article > .wrap > time { font-size: 14px; color: var(--ink-soft); }
.article h1 { font-size: clamp(26px, 4vw, 36px); letter-spacing: -0.02em; margin: 8px 0 20px; text-wrap: balance; }
.article .intro { font-size: 18px; color: var(--ink-soft); max-width: 68ch; margin: 0 0 32px; }
.article section { max-width: 72ch; margin: 0 0 36px; }
.article h2 { font-size: 21px; margin: 0 0 10px; letter-spacing: -0.01em; }
.article p { color: var(--ink-soft); margin: 0 0 12px; }
.article ul { margin: 0 0 12px; padding-left: 22px; color: var(--ink-soft); }
.article li { margin-bottom: 6px; }
.article strong { color: var(--ink); }
.article a:not(.btn) { color: var(--brand); }
.article figure { margin: 20px 0 0; max-width: none; }
.article figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
}
.article figcaption { margin-top: 8px; font-size: 13px; color: var(--ink-soft); }
.article .wide { max-width: 1000px; }
.article .cta { margin-top: 8px; }