:root {
  --bg: #f3f3f3;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #5d5d5d;
  --border: #e0e0e0;
  --accent: #005fb8;
  --accent-text: #ffffff;
  --code: #f0f0f0;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #202020;
    --surface: #2b2b2b;
    --text: #f3f3f3;
    --muted: #c5c5c5;
    --border: #3d3d3d;
    --accent: #60cdff;
    --accent-text: #003b5c;
    --code: #1c1c1c;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Microsoft YaHei UI",
        "Microsoft JhengHei UI", "Yu Gothic UI", "Malgun Gothic", sans-serif;
}

a { color: var(--accent); }

img { max-width: 100%; height: auto; }

.top {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}

.langs { position: relative; }

.langs summary {
  cursor: pointer;
  list-style: none;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.langs summary::-webkit-details-marker { display: none; }

.langs nav {
  position: absolute;
  right: 0;
  margin-top: 6px;
  display: grid;
  min-width: 190px;
  padding: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgb(0 0 0 / 0.18);
}

.langs nav a {
  padding: 6px 10px;
  border-radius: 4px;
  color: var(--text);
  text-decoration: none;
}

.langs nav a:hover, .langs nav a:focus-visible { background: var(--bg); }

.langs nav a[aria-current="page"] { font-weight: 600; color: var(--accent); }

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 16px 48px;
}

.hero {
  text-align: center;
  padding: 48px 0 24px;
}

.hero h1 {
  margin: 8px 0 4px;
  font-size: 40px;
  line-height: 1.2;
}

.lead {
  max-width: 680px;
  margin: 0 auto 20px;
  font-size: 18px;
  color: var(--muted);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 0 0 10px;
}

.button {
  display: inline-block;
  min-width: 140px;
  padding: 9px 20px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-text);
}

.meta { margin: 0; color: var(--muted); font-size: 13px; }

.status { margin: 16px auto 0; max-width: 680px; }

.readme {
  padding: 8px 32px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-wrap: anywhere;
}

.readme h2 {
  margin: 32px 0 12px;
  padding-bottom: 6px;
  font-size: 24px;
  border-bottom: 1px solid var(--border);
}

.readme h3 { margin: 24px 0 8px; font-size: 18px; }

.readme p[align="center"] { text-align: center; }

.readme table {
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
}

.readme th, .readme td {
  padding: 6px 12px;
  border: 1px solid var(--border);
  text-align: left;
}

.readme code {
  padding: 1px 5px;
  border-radius: 4px;
  background: var(--code);
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 0.92em;
}

.readme pre {
  overflow-x: auto;
  padding: 12px 16px;
  border-radius: 6px;
  background: var(--code);
}

.readme pre code { padding: 0; background: none; }

footer {
  padding: 24px 16px 40px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 600px) {
  .hero { padding-top: 32px; }
  .hero h1 { font-size: 32px; }
  .readme { padding: 4px 16px 16px; }
}