:root {
  --bg: #f6f4ef;
  --surface: #ffffff;
  --text: #16201b;
  --muted: #5d6762;
  --line: #e4e1d8;
  --accent: #0e6b4b;
  --accent-soft: #dcefe5;
  --radius: 20px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111513;
    --surface: #1a201d;
    --text: #eef2ef;
    --muted: #a3ada7;
    --line: #2a322e;
    --accent: #3fbf8a;
    --accent-soft: #1d3329;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 720px; }

header.site { padding: 22px 0; }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { font-weight: 800; font-size: 20px; letter-spacing: -0.02em; color: var(--text); text-decoration: none; }
.brand span { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:hover { color: var(--text); }

.hero { padding-top: 56px; padding-bottom: 40px; }
.hero h1 { font-size: clamp(34px, 6vw, 56px); line-height: 1.08; letter-spacing: -0.03em; margin: 0 0 18px; }
.hero p.lead { font-size: clamp(18px, 2.4vw, 21px); color: var(--muted); max-width: 620px; margin: 0 0 28px; }
.app-hero { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.app-icon { width: 76px; height: 76px; border-radius: 18px; display: block; margin-bottom: 22px; box-shadow: 0 8px 24px rgba(0,0,0,.12); }

.button {
  display: inline-block; padding: 14px 22px; border-radius: 14px; font-weight: 600;
  background: var(--accent); color: #fff; text-decoration: none;
}
.button.soft { background: var(--accent-soft); color: var(--accent); }
.note { color: var(--muted); font-size: 14px; margin-top: 10px; }

.phones { display: flex; gap: 14px; justify-content: center; }
.phones img {
  width: 46%; max-width: 230px; border-radius: 28px; border: 1px solid var(--line);
  box-shadow: 0 18px 40px rgba(0,0,0,.12); background: var(--surface);
}
.phones img:nth-child(2) { margin-top: 48px; }

section { padding: 36px 0; }
h2 { font-size: clamp(26px, 3.6vw, 34px); letter-spacing: -0.02em; line-height: 1.2; margin: 0 0 20px; }
h3 { font-size: 19px; margin: 0 0 6px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.card .tag { display: inline-block; font-size: 13px; font-weight: 600; color: var(--accent); background: var(--accent-soft); padding: 3px 10px; border-radius: 99px; margin-bottom: 12px; }
a.card { text-decoration: none; color: inherit; display: block; }
a.card:hover { border-color: var(--accent); }
.app-row { display: flex; gap: 16px; align-items: center; }
.app-row img { width: 56px; height: 56px; border-radius: 13px; }

.doc { padding: 24px 0 56px; }
.doc h1 { font-size: clamp(30px, 5vw, 40px); letter-spacing: -0.02em; line-height: 1.15; margin: 8px 0 10px; }
.doc h2 { font-size: 22px; margin: 34px 0 10px; }
.doc .meta { color: var(--muted); font-size: 15px; }
.doc table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 16px; }
.doc th, .doc td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc .box { background: var(--accent-soft); border-radius: 14px; padding: 16px 18px; margin: 16px 0; }
.doc details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.doc summary { font-weight: 600; cursor: pointer; }
.breadcrumb { font-size: 15px; color: var(--muted); }
.breadcrumb a { color: var(--muted); }

footer.site { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
footer.site .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; }
footer.site a { color: var(--muted); }

@media (max-width: 760px) {
  .app-hero { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  nav a { margin-left: 12px; }
  .hero { padding-top: 28px; }
}