:root {
  --bg: #fafaf7;
  --surface: #ffffff;
  --text: #111827;
  --muted: #5b6472;
  --border: #e5e7eb;
  --accent: #2f7d4f;
  --accent-soft: #ecf6ef;
  --code-bg: #f5f5f1;
  --code-border: #e5e5dc;
  --serif: "Iowan Old Style", "Georgia", "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
a:hover { border-bottom-color: var(--accent); }

code, pre {
  font-family: var(--mono);
  font-size: 0.92em;
}

code {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 4px;
  padding: 1px 6px;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 8px;
  padding: 16px 20px;
  overflow-x: auto;
  line-height: 1.5;
}
pre code {
  background: transparent;
  border: 0;
  padding: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 20px;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
@media (min-width: 640px) {
  .site-header { padding: 18px 32px; }
}
.site-header .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--text);
  border: 0;
}
.site-header .brand-mark {
  width: 22px;
  height: 22px;
  display: block;
}
.site-header nav {
  display: inline-flex;
  align-items: center;
  gap: 16px;
}
.site-header nav a {
  font-size: 14px;
  color: var(--muted);
  border: 0;
  white-space: nowrap;
}
.site-header nav a:hover { color: var(--accent); }
.site-header .icon-link {
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  padding: 4px;
  margin: -4px;
  border-radius: 4px;
}
.site-header .icon-link:hover { color: var(--text); }

.menu {
  position: relative;
}
.menu summary {
  list-style: none;
  cursor: pointer;
  color: var(--muted);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  user-select: none;
}
.menu summary::-webkit-details-marker { display: none; }
.menu summary::after {
  content: "▾";
  font-size: 10px;
  line-height: 1;
  position: relative;
  top: 1px;
  opacity: 0.7;
  transition: transform 120ms ease;
}
.menu[open] summary { color: var(--text); }
.menu[open] summary::after { transform: rotate(180deg); }
.menu summary:hover { color: var(--text); }

.menu-panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 180px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 12px 32px rgba(17, 24, 39, 0.10);
  padding: 6px;
  display: flex;
  flex-direction: column;
  z-index: 20;
}
.menu-panel a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--text);
  border: 0;
  border-radius: 6px;
}
.menu-panel a:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

@media (max-width: 520px) {
  .site-header { padding: 12px 16px; }
  .site-header .brand { font-size: 14px; gap: 8px; }
  .site-header .brand-mark { width: 20px; height: 20px; }
  .site-header nav { gap: 14px; }
  .site-header nav a, .site-header .menu summary { font-size: 13px; }
}

main {
  max-width: 760px;
  padding: 64px 32px 96px;
  margin: 0 auto;
}

.hero {
  padding: 80px 32px 40px;
  max-width: 760px;
  margin: 0 auto;
}
.hero-mark {
  width: 72px;
  height: 72px;
  display: block;
  margin-bottom: 28px;
}
.hero h1 {
  font-family: var(--serif);
  font-size: 48px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  font-weight: 600;
}
.hero p.lead {
  font-size: 19px;
  line-height: 1.55;
  color: var(--muted);
  margin: 0 0 24px;
  max-width: 620px;
}
.hero .meta {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 28px;
}

h1, h2, h3, h4 { font-family: var(--serif); letter-spacing: -0.01em; }
h1 { font-size: 36px; }
h2 { font-size: 24px; margin-top: 48px; margin-bottom: 12px; }
h3 { font-size: 18px; font-family: var(--sans); margin-top: 28px; margin-bottom: 8px; }

p { margin: 12px 0; }

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

.demo {
  margin: 24px auto 0;
  max-width: 520px;
}
.demo video {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #0f1115;
  box-shadow: 0 10px 30px rgba(17, 24, 39, 0.08);
}
.demo figcaption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}
@media (max-width: 600px) {
  .demo { max-width: 100%; }
}

.specs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 24px;
}
@media (min-width: 720px) {
  .specs { grid-template-columns: 1fr 1fr; }
}

.spec-card {
  display: block;
  padding: 24px 24px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: inherit;
  border-bottom: 1px solid var(--border);
  transition: border-color 120ms ease, transform 120ms ease;
}
.spec-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.spec-card .name {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 6px;
}
.spec-card .status {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 2px 10px;
  display: inline-block;
  margin-bottom: 14px;
}
.spec-card .description {
  color: var(--muted);
  font-size: 15px;
  margin: 0;
}
.spec-card .more {
  font-size: 13px;
  color: var(--accent);
  margin-top: 14px;
}

.status-badge {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 3px 12px;
  vertical-align: 3px;
  margin-left: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}
th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th { color: var(--muted); font-weight: 500; }

.callout {
  margin: 24px 0;
  padding: 16px 20px;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
  font-size: 14px;
  color: #234d36;
}

ul.docs-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
}
ul.docs-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
ul.docs-list li:last-child { border-bottom: 0; }
ul.docs-list .file {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  margin-left: 8px;
}

.sponsors {
  border-top: 1px solid var(--border);
  padding: 56px 32px 64px;
  margin-top: 80px;
}
.sponsors-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}
.sponsors-label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 28px;
}
.sponsors-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 64px;
  margin-bottom: 32px;
}
.sponsors-logos a {
  display: inline-flex;
  align-items: center;
  border: 0;
  opacity: 0.75;
  transition: opacity 120ms ease;
}
.sponsors-logos a:hover { opacity: 1; }
.sponsors-logos img {
  /* White SVGs flipped to black for a light page; works for any monochrome-white logo. */
  filter: brightness(0);
  height: 36px;
  width: auto;
  display: block;
}
.sponsors-logos img.is-wordmark {
  /* Wordmark logos sit visually larger than the icon-shaped ones; shrink. */
  height: 22px;
}
.sponsors-note {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}

footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}
footer.site-footer a { color: var(--muted); border: 0; }
footer.site-footer a:hover { color: var(--accent); }