:root {
  --bg: #0b0c0f;
  --chrome: #111317;
  --surface: #17191e;
  --outline: #2c2f37;
  --text: #e6e6e8;
  --dim: #8b8e97;
  --accent: #22b8a0;
  --cyan: #4fcdeb;
  --violet: #a68cff;
  --amber: #ffb24a;
  --radius: 14px;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(34, 184, 160, 0.12), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(166, 140, 255, 0.08), transparent 60%),
    var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
  font: 0.85em/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: 6px;
  padding: 0.1em 0.35em;
}

.muted { color: var(--dim); }

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px clamp(20px, 5vw, 64px);
  background: rgba(11, 12, 15, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(44, 47, 55, 0.6);
}

.brand {
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav nav { display: flex; gap: clamp(12px, 3vw, 28px); }
.nav nav a { color: var(--dim); font-size: 0.95rem; }
.nav nav a:hover { color: var(--text); text-decoration: none; }

main { max-width: 1200px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 64px); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  padding: clamp(48px, 9vw, 112px) 0 clamp(40px, 6vw, 80px);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 20px;
  font-size: clamp(2.3rem, 5vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

h2 { font-size: 2rem; letter-spacing: -0.01em; margin: 0 0 8px; }
h3 { margin: 0 0 6px; font-size: 1.05rem; }

.lead { font-size: 1.15rem; color: #c3c5cb; margin: 0 0 28px; }

.cta { display: flex; flex-wrap: wrap; gap: 12px; }

.button {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: #04110e;
  font-weight: 650;
  box-shadow: 0 8px 30px rgba(34, 184, 160, 0.25);
}
.button:hover { text-decoration: none; filter: brightness(1.08); }
.button-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--outline);
  box-shadow: none;
}

.platforms { margin-top: 22px; color: var(--dim); font-size: 0.9rem; }

.screen { margin: 0; }
.screen img, .gallery img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--outline);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.02);
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  padding: 24px 0 56px;
}
.features article {
  padding: 22px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface), var(--chrome));
  border: 1px solid var(--outline);
}
.features p { margin: 0; color: var(--dim); }

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  padding-bottom: 72px;
}
.gallery figure { margin: 0; }
.gallery figcaption { color: var(--dim); font-size: 0.9rem; margin-top: 8px; text-align: center; }

.download { padding-bottom: 80px; }
.download > .muted { max-width: 820px; }

.channel {
  margin-top: 16px;
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  background: var(--chrome);
  overflow: hidden;
}
.channel > summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
}
.channel > summary::-webkit-details-marker { display: none; }
.channel > summary::after { content: "+"; margin-left: auto; color: var(--dim); font-size: 1.3rem; }
.channel[open] > summary::after { content: "–"; }
.channel > p { margin: 0; padding: 0 20px 12px; }
.channel-empty .version { color: var(--dim); }
.version { font-weight: 650; font-variant-numeric: tabular-nums; }
.date { font-size: 0.9rem; }

.badge {
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.badge-stable { background: rgba(34, 184, 160, 0.15); color: var(--accent); }
.badge-beta { background: rgba(166, 140, 255, 0.15); color: var(--violet); }
.badge-alpha { background: rgba(255, 178, 74, 0.15); color: var(--amber); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
th, td { padding: 10px 20px; text-align: left; vertical-align: top; }
thead th { color: var(--dim); font-weight: 500; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; }
tbody tr + tr td { border-top: 1px solid rgba(44, 47, 55, 0.6); }
tr.group th {
  padding-top: 18px;
  color: var(--text);
  font-size: 0.85rem;
  border-top: 1px solid var(--outline);
  background: rgba(23, 25, 30, 0.6);
}
.dl { font-weight: 600; }
.file { color: var(--dim); font-size: 0.82rem; }
.size { white-space: nowrap; color: var(--dim); font-variant-numeric: tabular-nums; }
.sha { display: inline-block; max-width: 34ch; word-break: break-all; font-size: 0.75rem; color: var(--dim); user-select: all; }
.perma a { color: var(--dim); font-size: 0.85rem; }

.notes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.notes p { margin: 0; color: var(--dim); font-size: 0.95rem; }

.nav nav a[aria-current="page"] { color: var(--text); }

.manual {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 64px);
}

.toc {
  position: sticky;
  top: 72px;
  align-self: start;
  max-height: calc(100vh - 88px);
  overflow-y: auto;
  padding: 40px 0 24px;
  font-size: 0.9rem;
}
.toc-title {
  margin: 0 0 10px;
  color: var(--dim);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.toc ol { margin: 0; padding-left: 1.6em; color: var(--dim); }
.toc li { padding: 3px 0; }
.toc a { color: var(--dim); }
.toc a:hover { color: var(--text); text-decoration: none; }

.prose { max-width: 760px; padding: 40px 0 96px; }
.prose h1 { margin-bottom: 12px; }
.prose section { padding-top: 24px; scroll-margin-top: 64px; }
.prose h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 24px 0 12px;
  padding-top: 24px;
  border-top: 1px solid var(--outline);
  font-size: 1.6rem;
}
.prose h2 .num { color: var(--accent); font-size: 1rem; font-variant-numeric: tabular-nums; }
.prose h3 { margin: 24px 0 6px; font-size: 1.05rem; }
.prose p, .prose li, .prose dd { color: #c3c5cb; }
.prose li { margin: 4px 0; }
.prose strong { color: var(--text); }
.prose figure { margin: 24px 0; }
.prose figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--outline);
}
.prose pre {
  margin: 12px 0 16px;
  padding: 14px 16px;
  overflow-x: auto;
  background: var(--chrome);
  border: 1px solid var(--outline);
  border-radius: 10px;
}
.prose pre code { background: none; border: 0; padding: 0; font-size: 0.85rem; }
.prose table {
  margin: 12px 0 20px;
  background: var(--chrome);
  border: 1px solid var(--outline);
  border-radius: 10px;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
}
.prose th, .prose td { padding: 9px 14px; }
.prose tbody td { border-top: 1px solid rgba(44, 47, 55, 0.6); color: #c3c5cb; }
.prose tbody td[rowspan] { color: var(--text); }
.prose dl { margin: 12px 0 16px; }
.prose dt { margin-top: 12px; color: var(--text); font-weight: 650; }
.prose dt.error { color: #ff6b6b; }
.prose dd { margin: 2px 0 0; }
.callout {
  padding: 12px 16px;
  border-left: 3px solid var(--amber);
  border-radius: 6px;
  background: rgba(255, 178, 74, 0.07);
}

kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: 0.05em 0.45em;
  font: 0.82em/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-align: center;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--outline);
  border-bottom-width: 2px;
  border-radius: 5px;
}

footer {
  border-top: 1px solid var(--outline);
  padding: 28px clamp(20px, 5vw, 64px);
  text-align: center;
  color: var(--dim);
  font-size: 0.9rem;
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .nav nav a:not(:last-child) { display: none; }
  th, td { padding: 10px 12px; }
  .sha { max-width: 20ch; }
  .manual { grid-template-columns: 1fr; }
  .toc { position: static; max-height: none; padding-bottom: 0; }
  .toc ol { columns: 2; column-gap: 24px; }
}