:root {
  --accent: #1A73E8;
  --accent-dark: #1558B0;
  --accent-soft: #EAF2FE;
  --ink: #1D1D1F;
  --muted: #5F6368;
  --line: #E6E2DA;
  --bg: #FFFFFF;
  --bg-alt: #FAF8F4;
  --warn-bg: #FFF4E5;
  --warn-line: #F0B65A;
  --radius: 14px;
  --max: 1080px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #F2F2F2;
    --muted: #A8ADB3;
    --line: #34312C;
    --bg: #161514;
    --bg-alt: #1E1C1A;
    --accent-soft: #14233B;
    --warn-bg: #2B2214;
    --warn-line: #8A6420;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16.5px;
}
a { color: var(--accent-dark); }
@media (prefers-color-scheme: dark) { a { color: #8AB4F8; } }
img { max-width: 100%; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 22px; }

/* Header */
header.site {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
header.site .wrap { display: flex; align-items: center; gap: 18px; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--ink); text-decoration: none; }
.brand img { width: 32px; height: 32px; }
nav.main { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
nav.main a { color: var(--ink); text-decoration: none; padding: 7px 12px; border-radius: 8px; font-size: 15px; }
nav.main a:hover, nav.main a.active { background: var(--accent-soft); color: var(--accent-dark); }
@media (prefers-color-scheme: dark) { nav.main a:hover, nav.main a.active { color: #8AB4F8; } }
.menu-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; color: var(--ink); font-size: 18px; }
@media (max-width: 760px) {
  .menu-toggle { display: block; }
  nav.main { display: none; position: absolute; top: 62px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--line); flex-direction: column; padding: 8px 16px 14px; }
  nav.main.open { display: flex; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px; border-radius: 11px; font-weight: 600; font-size: 16px;
  text-decoration: none; border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--accent); color: #fff !important; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { border-color: var(--line); color: var(--ink) !important; background: var(--bg); }
.btn-ghost:hover { border-color: var(--accent); }

/* Hero */
.hero { padding: 72px 0 56px; background: linear-gradient(180deg, var(--accent-soft), var(--bg)); }
.hero .wrap { display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(32px, 4.6vw, 50px); line-height: 1.15; margin: 0 0 16px; letter-spacing: -0.5px; }
.hero h1 span { color: var(--accent); }
.hero p.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; }
.hero .meta { font-size: 14px; color: var(--muted); margin-top: 14px; }
.hero .art { text-align: center; }
.hero .art img { width: min(260px, 70%); filter: drop-shadow(0 18px 40px rgba(26,115,232,.35)); }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
@media (max-width: 760px) { .hero .wrap { grid-template-columns: 1fr; } .hero .art { order: -1; } .hero { padding-top: 40px; } }

/* Sections */
section { padding: 60px 0; }
section.alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { font-size: 30px; margin: 0 0 10px; letter-spacing: -0.3px; }
h3 { font-size: 20px; margin: 0 0 8px; }
.section-lead { color: var(--muted); margin: 0 0 32px; max-width: 760px; }

.grid { display: grid; gap: 18px; }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .grid.c3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .grid.c2, .grid.c3 { grid-template-columns: 1fr; } }

.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 22px 18px; }
.card .ico { font-size: 28px; line-height: 1; margin-bottom: 12px; }
.card ul { padding-left: 20px; margin: 8px 0 0; }
.card li { margin-bottom: 5px; }
.card p { margin: 0 0 8px; color: var(--muted); }

.notice { border: 1px solid var(--warn-line); background: var(--warn-bg); border-radius: var(--radius); padding: 18px 20px; margin: 18px 0; }
.notice strong:first-child { display: block; margin-bottom: 4px; }

.yes-no { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 700px) { .yes-no { grid-template-columns: 1fr; } }
.yes h3::before { content: "✅ "; }
.no h3::before { content: "⛔ "; }

/* Download box */
.download-box { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: var(--bg); }
.download-box img { width: 64px; height: 64px; }
.download-box .info { flex: 1; min-width: 220px; }
.download-box .info h3 { margin: 0; }
.download-box .info p { margin: 2px 0 0; color: var(--muted); font-size: 15px; }
code, .hash { font-family: Consolas, "Cascadia Mono", monospace; font-size: 14px; background: var(--bg-alt); border: 1px solid var(--line); border-radius: 6px; padding: 2px 6px; word-break: break-all; }
.hash { display: block; padding: 10px 12px; margin-top: 8px; }

/* Download counter — hidden until the real number has loaded */
.download-stat { display: none; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.download-stat.ready { display: flex; }
.download-stat .num {
  font-size: clamp(44px, 7vw, 68px); font-weight: 800; line-height: 1;
  color: var(--accent); letter-spacing: -1px; font-variant-numeric: tabular-nums;
}
.download-stat .label { font-size: 18px; color: var(--muted); }
.download-stat .label b { color: var(--ink); }
.download-stat.boxed {
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--accent-soft);
  padding: 22px 26px; justify-content: center; text-align: center; margin: 22px 0;
}

ol.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; }
ol.steps > li { counter-increment: s; position: relative; padding: 0 0 18px 50px; }
ol.steps > li::before {
  content: counter(s); position: absolute; left: 0; top: 0;
  width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #fff;
  display: grid; place-items: center; font-weight: 700;
}

table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15.5px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--bg-alt); }

details { border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin-bottom: 10px; background: var(--bg); }
details summary { cursor: pointer; font-weight: 600; }
details p { margin: 10px 0 0; color: var(--muted); }

/* Doc pages */
.doc { padding: 48px 0 70px; }
.doc .wrap { max-width: 820px; }
.doc h1 { font-size: 36px; margin: 0 0 6px; }
.doc .updated { color: var(--muted); margin: 0 0 28px; }
.doc h2 { font-size: 24px; margin: 36px 0 10px; padding-top: 6px; }
.doc h3 { margin-top: 22px; }
.toc { background: var(--bg-alt); border: 1px solid var(--line); border-radius: 12px; padding: 14px 20px; margin-bottom: 26px; }
.toc ul { margin: 6px 0 0; padding-left: 20px; }
.lang-switch { float: right; font-size: 14px; }

/* Byline next to the logo: back link to the main site */
.byline { font-size: 13px; color: var(--muted) !important; text-decoration: none; white-space: nowrap; margin-left: -6px; }
.byline:hover { color: var(--accent-dark) !important; text-decoration: underline; }
@media (max-width: 420px) { .byline { display: none; } }

/* "Other products" block above the footer */
aside.family { padding: 48px 0 52px; border-top: 1px solid var(--line); }
aside.family h2 { font-size: 22px; margin: 0 0 18px; }
.family-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 900px) { .family-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .family-grid { grid-template-columns: 1fr; } }
.family-card {
  display: flex; flex-direction: column; gap: 4px;
  padding: 16px 18px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--bg); color: var(--ink) !important; text-decoration: none;
  transition: border-color .15s, transform .15s;
}
.family-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.family-card .ico { font-size: 24px; line-height: 1; margin-bottom: 4px; }
.family-card b { font-size: 17px; }
.family-card span:not(.ico) { color: var(--muted); font-size: 14.5px; line-height: 1.5; }
.family-card em { font-style: normal; font-size: 13px; color: var(--accent-dark); margin-top: auto; padding-top: 6px; }
@media (prefers-color-scheme: dark) { .family-card em { color: #8AB4F8; } }
.family-card.current { background: var(--accent-soft); border-color: var(--accent); }

footer.site { border-top: 1px solid var(--line); padding: 34px 0; color: var(--muted); font-size: 14.5px; background: var(--bg-alt); }
footer.site .wrap { display: flex; gap: 24px; flex-wrap: wrap; justify-content: space-between; }
footer.site nav a { margin-right: 16px; color: var(--muted); }

/* Phone screenshots */
.shots { display: flex; gap: 18px; overflow-x: auto; padding: 4px 2px 12px; scroll-snap-type: x mandatory; }
.shots figure { margin: 0; flex: 0 0 auto; width: 210px; scroll-snap-align: start; text-align: center; }
.shots img { width: 100%; height: auto; border-radius: 22px; border: 1px solid var(--line); box-shadow: 0 10px 30px rgba(20, 40, 80, .12); display: block; }
.shots figcaption { font-size: 14px; color: var(--muted); margin-top: 8px; }
@media (min-width: 940px) { .shots { justify-content: center; } }
@media (max-width: 760px) { .hero .art img { width: 120px; } }