:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #16181d;
  --muted: #5d6470;
  --line: #dde1e7;
  --accent: #2f6fed;
  --accent-text: #ffffff;
  --warn: #fff6e0;
  --warn-line: #f0d48a;
  --code: #f0f2f5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121418;
    --card: #1b1e24;
    --text: #e8eaee;
    --muted: #9aa1ad;
    --line: #2c313a;
    --accent: #4f86f7;
    --accent-text: #ffffff;
    --warn: #2d2716;
    --warn-line: #6b5a26;
    --code: #24282f;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
main { max-width: 640px; margin: 0 auto; padding: 24px 16px 40px; }
header { display: flex; gap: 14px; align-items: center; margin-bottom: 18px; }
.logo {
  flex: none; width: 48px; height: 48px; border-radius: 12px;
  background: var(--accent); color: var(--accent-text);
  display: flex; align-items: center; justify-content: center; font-weight: 700; letter-spacing: .5px;
}
h1 { font-size: 22px; margin: 0; line-height: 1.25; }
h2 { font-size: 19px; margin: 0 0 6px; }
h3 { font-size: 16px; margin: 18px 0 10px; }
p { margin: 0 0 10px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 18px; margin: 14px 0;
}
.card.warn, .note.warn { background: var(--warn); border-color: var(--warn-line); }
.note { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin: 10px 0; }
.note p:last-child { margin: 0; }

/* Downloads: a button per file, this device's first and filled. */
.dl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; margin: 12px 0 6px; }
.dl {
  display: flex; flex-direction: column; align-items: flex-start; gap: 2px; min-height: 64px;
  font: inherit; text-align: left; text-decoration: none; cursor: pointer;
  border: 1px solid var(--line); background: var(--code); color: var(--text);
  border-radius: 12px; padding: 11px 14px;
}
.dl:hover { border-color: var(--accent); }
.dl:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.dl-name { font-weight: 600; }
.dl-ext { font-size: 14px; color: var(--muted); }
.dl.primary { grid-column: 1 / -1; align-items: center; text-align: center; background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.dl.primary .dl-name { font-size: 18px; }
.dl.primary .dl-ext { color: var(--accent-text); opacity: .9; }

/* Systems of «Как войти в сеть». */
.tabs { display: flex; gap: 4px; padding: 4px; margin: 12px 0 4px; background: var(--code); border-radius: 12px; overflow-x: auto; }
.tab {
  flex: 1 0 auto; font: inherit; font-size: 15px; font-weight: 600; cursor: pointer;
  border: none; background: none; color: var(--muted); border-radius: 9px; padding: 8px 12px;
}
.tab[aria-selected="true"] { background: var(--card); color: var(--text); box-shadow: 0 1px 3px rgba(0, 0, 0, .15); }
.tab:focus-visible { outline: 3px solid var(--accent); outline-offset: 1px; }
.row { display: flex; flex-wrap: wrap; gap: 10px; }
.btn {
  display: inline-block; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  border-radius: 10px; padding: 10px 16px; margin: 4px 0;
}
.btn.primary {
  background: var(--accent); border-color: var(--accent); color: var(--accent-text);
  font-size: 17px; padding: 13px 22px; display: block; width: 100%; text-align: center;
}
.btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.steps { margin: 12px 0; padding-left: 22px; }
.steps li { margin: 4px 0; }
pre.cmd, code.fp {
  font: 13px/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--code); border-radius: 8px;
}
pre.cmd { padding: 10px 12px; white-space: pre-wrap; word-break: break-all; margin: 8px 0; }
code.fp { padding: 1px 4px; word-break: break-all; }
.steps code.fp { word-break: normal; overflow-wrap: anywhere; }
footer { margin-top: 24px; font-size: 13px; }
#toast {
  position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%);
  max-width: calc(100% - 32px); background: var(--text); color: var(--bg);
  padding: 10px 16px; border-radius: 10px; font-size: 14px;
}
/* The download site (docs/SITE.md): a hero, a card per system. */
body.site main { max-width: 1040px; }
.hero { text-align: center; padding: 28px 0 8px; }
.hero-logo {
  width: 84px; height: 84px; margin: 0 auto 14px; border-radius: 22px;
  background: linear-gradient(135deg, var(--accent), #7a4ff7); color: var(--accent-text);
  display: flex; align-items: center; justify-content: center; font-size: 32px; font-weight: 800; letter-spacing: 1px;
  box-shadow: 0 10px 30px rgba(47, 111, 237, .35);
}
.hero h1 { font-size: 40px; letter-spacing: -.5px; }
.hero-tag { font-size: 18px; max-width: 620px; margin: 10px auto; }
.hero-cta { max-width: 360px; margin: 18px auto 0; }
.btn.get { display: flex; flex-direction: column; align-items: center; gap: 1px; width: 100%; text-align: center; }
.get-main { font-size: 16px; }
.get-sub { font-size: 13px; font-weight: 400; opacity: .8; }
.btn.hero-btn { padding: 15px 22px; border-radius: 14px; }
.btn.hero-btn .get-main { font-size: 19px; }
.platforms { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 26px 0 8px; }
.pcard {
  display: flex; flex-direction: column; gap: 10px; position: relative;
  background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 18px;
}
.pcard.here { padding-top: 36px; border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent) inset; }
.pcard.none { opacity: .7; }
.pcard-head { display: flex; gap: 12px; align-items: center; }
.pcard-head h2 { margin: 0; }
.pcard-head p { margin: 0; }
.icon { flex: none; width: 44px; height: 44px; padding: 9px; border-radius: 12px; background: var(--code); color: var(--text); }
.pcard.here .icon { background: var(--accent); color: var(--accent-text); }
.badge {
  position: absolute; top: 12px; right: 12px; font-size: 12px; font-weight: 600;
  background: var(--accent); color: var(--accent-text); border-radius: 999px; padding: 2px 9px;
}
.pcard-acts { display: flex; flex-direction: column; gap: 8px; margin-top: auto; }
.pcard-acts .btn { margin: 0; }
.pcard .link { font: inherit; cursor: pointer; background: none; border: none; padding: 2px 0; margin: 0; color: var(--accent); font-weight: 600; font-size: 14px; align-self: flex-start; }
.pcard .link:hover { text-decoration: underline; }
body.site #join { max-width: 720px; margin: 22px auto; }
body.site footer { text-align: center; }

@media (max-width: 420px) {
  .hero h1 { font-size: 32px; }
  .hero-tag { font-size: 16px; }
  main { padding: 16px 12px 32px; }
  .card { padding: 14px; border-radius: 12px; }
  .dl-grid { grid-template-columns: 1fr 1fr; }
  .tab { padding: 8px 6px; font-size: 14px; }
  .row .btn { flex: 1 1 100%; text-align: center; }
}
[hidden] { display: none !important; }