:root {
  --ink: #181818;
  --brand: #137bc9;
  --paper: #ffffff;
  --surface: #f4f6f8;
  --line: #e3e7ec;
  --muted: #5a6472;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: Arial, "Helvetica Neue", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}
.container { max-width: 920px; margin: 0 auto; padding: 0 20px; }

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.header-inner { display: flex; align-items: center; gap: 16px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
.logo { display: block; height: 41px; width: auto; }
.badge {
  font-size: 14px; font-weight: 700; color: var(--brand);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px;
}

main.container { padding-top: 36px; padding-bottom: 48px; }
.hero h1 { font-size: clamp(26px, 4.5vw, 40px); line-height: 1.12; margin: 0 0 14px; }
.lead { font-size: 17px; color: var(--muted); max-width: 64ch; margin: 0 0 24px; }

.btn-download {
  display: inline-block;
  background: var(--brand); color: #fff; text-decoration: none;
  font-size: 18px; font-weight: 700;
  padding: 14px 26px; border-radius: 12px;
  box-shadow: 0 8px 20px rgba(19,123,201,.25);
}
.btn-download:hover { filter: brightness(1.08); }
.hint { margin: 12px 0 0; font-size: 13px; color: var(--muted); }

section { margin: 34px 0; }
h2 { font-size: 22px; margin: 0 0 12px; }
.steps ol { padding-left: 22px; }
.steps li { margin: 8px 0; }
.warn {
  background: var(--surface); border-left: 4px solid var(--brand);
  padding: 12px 16px; border-radius: 0 10px 10px 0;
}
.support .contacts a { color: var(--brand); font-weight: 700; }
.meta { border-collapse: collapse; width: 100%; }
.meta th, .meta td { text-align: left; vertical-align: top; padding: 8px 10px; border-top: 1px solid var(--line); }
.meta th { width: 180px; color: var(--muted); font-weight: 600; }
code { background: var(--surface); border-radius: 6px; padding: 2px 6px; word-break: break-all; }
.legal p, .legal a { color: var(--muted); }
.legal a { color: var(--brand); }

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted); font-size: 13px;
}
.site-footer .container { padding-top: 18px; padding-bottom: 18px; }

@media (max-width: 560px) {
  .header-inner { justify-content: center; text-align: center; }
  .btn-download { width: 100%; text-align: center; }
}