:root {
  color-scheme: light dark;
  --background: oklch(0.94 0.003 286.32);
  --foreground: oklch(0.21 0.006 285.885);
  --card: oklch(0.98 0.002 286.32);
  --muted-foreground: oklch(0.505 0.016 285.938);
  --accent: oklch(0.9 0.004 286.32);
  --border: oklch(0.888 0.004 286.32);
  --primary: oklch(0.21 0.006 285.885);
  --primary-foreground: oklch(0.985 0 0);
  --radius: 0.45rem;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "Fira Code", "JetBrains Mono", "SFMono-Regular", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --background: oklch(0.141 0.005 285.823);
    --foreground: oklch(0.985 0 0);
    --card: oklch(0.21 0.006 285.885);
    --muted-foreground: oklch(0.705 0.015 286.067);
    --accent: oklch(0.274 0.006 286.033);
    --border: oklch(1 0 0 / 10%);
    --primary: oklch(0.92 0.004 286.32);
    --primary-foreground: oklch(0.21 0.006 285.885);
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--background);
  color: var(--foreground);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
code, kbd { font-family: var(--mono); }

.wrap { max-width: 980px; margin: 0 auto; padding: 0 24px; }

/* ---- top bar: a hairline seam, nothing enclosed ---- */
header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in oklab, var(--background) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
header .wrap { display: flex; align-items: center; gap: 10px; height: 52px; }
header img { width: 20px; height: 20px; }
header .name { font-weight: 600; letter-spacing: -0.01em; }
header nav { margin-left: auto; display: flex; gap: 2px; }
header nav a {
  color: var(--muted-foreground); text-decoration: none;
  font-size: 13.5px; padding: 5px 10px; border-radius: var(--radius);
}
header nav a:hover { background: color-mix(in oklab, var(--accent) 55%, transparent); color: var(--foreground); }

/* ---- hero ---- */
.hero { padding: 76px 0 44px; text-align: center; }
.hero img.mark { width: 72px; height: 72px; margin: 0 auto 22px; }
.hero h1 {
  font-size: clamp(30px, 5vw, 42px); line-height: 1.2;
  letter-spacing: -0.03em; font-weight: 600; max-width: 26ch; margin: 0 auto;
}
/* CJK has no spaces, so a 26ch measure breaks the title mid-word. Every glyph
   is one em wide, which makes an em measure exact here. */
html[lang="zh-CN"] .hero h1 { max-width: 21em; }
.hero p.lede {
  margin: 18px auto 0; max-width: 60ch;
  color: var(--muted-foreground); font-size: 16px;
}
.cta { margin-top: 30px; display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 16px; border-radius: var(--radius);
  font-size: 14px; font-weight: 500; text-decoration: none;
  background: var(--primary); color: var(--primary-foreground);
}
.btn.ghost { background: transparent; color: var(--muted-foreground); }
.btn.ghost:hover { background: color-mix(in oklab, var(--accent) 55%, transparent); color: var(--foreground); }

.install {
  margin: 26px auto 0; max-width: 720px;
  display: flex; align-items: flex-start; gap: 10px;
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 11px 12px 11px 14px; background: var(--card);
  font-family: var(--mono); font-size: 13px; text-align: left;
}
.install span { flex: 1; overflow-wrap: anywhere; }
.install span::before { content: "$ "; color: var(--muted-foreground); }
.install button {
  flex: none; font: inherit; font-size: 12px; cursor: pointer;
  border: 0; border-radius: 6px; padding: 4px 9px;
  background: transparent; color: var(--muted-foreground);
}
.install button:hover { background: var(--accent); color: var(--foreground); }
.hero .note { margin-top: 12px; font-size: 12.5px; color: var(--muted-foreground); }

/* ---- shots ---- */
figure { margin: 0; }
figure img { border: 1px solid var(--border); border-radius: var(--radius); }
figure figcaption {
  margin-top: 10px; font-size: 12.5px; color: var(--muted-foreground); text-align: center;
}
.shot-hero { margin: 40px 0 0; }

/* ---- sections ---- */
section { padding: 68px 0; border-top: 1px solid var(--border); }
section.flush { border-top: 0; padding-top: 0; }
h2 {
  font-size: 22px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 8px;
}
.section-lede { color: var(--muted-foreground); max-width: 62ch; }

.features { display: grid; gap: 34px; grid-template-columns: repeat(2, 1fr); margin-top: 34px; }
.feature h3 { font-size: 15px; font-weight: 600; margin-bottom: 5px; }
.feature p { color: var(--muted-foreground); font-size: 14px; }
.feature code { font-size: 12.5px; color: var(--foreground); }

.gallery { display: grid; gap: 40px; margin-top: 36px; }

/* ---- table ---- */
table { width: 100%; border-collapse: collapse; margin-top: 26px; font-size: 14px; }
th, td { text-align: left; padding: 11px 12px 11px 0; vertical-align: top; }
th {
  font-size: 11.5px; font-weight: 500; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--muted-foreground);
}
tbody tr { border-top: 1px solid var(--border); }
td:first-child { white-space: nowrap; font-weight: 500; }
td .exp { font-weight: 400; color: var(--muted-foreground); font-style: italic; }
td:last-child { color: var(--muted-foreground); }
a.link { color: inherit; text-decoration-color: var(--border); text-underline-offset: 3px; }
a.link:hover { text-decoration-color: currentColor; }

/* ---- footer ---- */
footer { border-top: 1px solid var(--border); padding: 30px 0 60px; }
footer .wrap { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
footer p { font-size: 13px; color: var(--muted-foreground); }
footer nav { margin-left: auto; display: flex; gap: 16px; font-size: 13px; }
footer nav a { color: var(--muted-foreground); text-decoration: none; }
footer nav a:hover { color: var(--foreground); }

@media (max-width: 720px) {
  .features { grid-template-columns: 1fr; }
  .hero { padding-top: 52px; }
  header nav a:not(.gh):not(.lang) { display: none; }
}