:root {
  --bg: #0b0e14;
  --bg-elevated: #11151f;
  --bg-elevated-2: #161c2a;
  --border: #1f2632;
  --text: #e7ebf3;
  --text-dim: #9aa4b8;
  --primary: #2E5BFF;
  --primary-light: #6c8bff;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}
a { color: var(--primary-light); }
img { max-width: 100%; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* Navbar */
nav.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
nav.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
  flex-wrap: nowrap;
  padding-top: 10px;
  padding-bottom: 10px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700; font-size: 1.1rem; flex-shrink: 0; }
.brand img { width: 28px; height: 28px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-links a:hover { color: var(--text); background: var(--bg-elevated); }
.nav-links a.active { color: var(--text); background: var(--bg-elevated-2); }
.nav-links a.gh-link { border: 1px solid var(--border); }

/* Hero */
header.hero {
  padding: 72px 0 56px;
  text-align: center;
  background:
    radial-gradient(600px 300px at 50% -10%, rgba(46,91,255,0.25), transparent 70%),
    var(--bg);
}
.logo { width: 84px; height: 84px; }
h1 { font-size: 2.6rem; margin: 20px 0 8px; }
.tagline { font-size: 1.2rem; color: var(--text-dim); margin: 0 0 28px; }

.badges { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-bottom: 28px; }
.badges img { height: 20px; }

.cta-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-weight: 600;
  text-decoration: none; font-size: 0.95rem;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: white; }
.btn-secondary { background: var(--bg-elevated); color: var(--text); border: 1px solid var(--border); }

/* Page header (non-home pages) */
header.page-head { padding: 48px 0 32px; border-bottom: 1px solid var(--border); }
header.page-head h1 { font-size: 2.1rem; margin: 0 0 8px; }
header.page-head p { color: var(--text-dim); margin: 0; font-size: 1.05rem; }

section { padding: 56px 0; }
section.alt { background: var(--bg-elevated); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
main section:first-of-type { padding-top: 40px; }
h2 { font-size: 1.6rem; margin: 0 0 8px; }
h3 { font-size: 1.15rem; }
.section-sub { color: var(--text-dim); margin-top: 0; margin-bottom: 28px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
section.alt .card { background: var(--bg); }
.card h3 { margin: 0 0 8px; }
.card p { margin: 0; color: var(--text-dim); font-size: 0.95rem; }

pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  overflow-x: auto;
  font-size: 0.88rem;
}
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
:not(pre) > code {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 6px;
  font-size: 0.88em;
}

table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 0.9rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--text-dim); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); margin: 16px 0; }
.table-wrap table { margin: 0; }
.table-wrap th, .table-wrap td { border-bottom: 1px solid var(--border); }
.table-wrap tr:last-child td { border-bottom: none; }

.note {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  padding: 14px 18px;
  margin: 20px 0;
  font-size: 0.92rem;
  color: var(--text-dim);
}

.toc { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 22px; margin: 0 0 40px; }
.toc h2 { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-dim); margin-bottom: 12px; }
.toc ul { columns: 2; margin: 0; padding-left: 18px; }
.toc a { text-decoration: none; font-size: 0.92rem; }
.toc a:hover { text-decoration: underline; }

.links { display: flex; gap: 20px; flex-wrap: wrap; }
.links a { text-decoration: none; font-weight: 600; }
.links a:hover { text-decoration: underline; }

footer.site-footer { padding: 40px 0 64px; text-align: center; color: var(--text-dim); font-size: 0.9rem; border-top: 1px solid var(--border); }
footer.site-footer a { color: var(--text-dim); }

.screenshot-pair { grid-template-columns: 1fr 1fr; }

@media (max-width: 640px) {
  .toc ul { columns: 1; }
  h1 { font-size: 2rem; }
  .wrap { padding: 0 16px; }
  .nav-links a { padding: 8px 10px; font-size: 0.85rem; }
  .screenshot-pair { grid-template-columns: 1fr; }
}