:root {
  --bg: #fbfbfa;
  --fg: #1d1f21;
  --muted: #5f6368;
  --card: #ffffff;
  --line: #e3e3e0;
  --accent: #0f7b6c;
  --code-bg: #f1f1ee;
  --shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 8px 24px rgb(0 0 0 / 6%);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121416;
    --fg: #e6e6e3;
    --muted: #9aa0a6;
    --card: #1a1d20;
    --line: #2b2f33;
    --accent: #4fd1b5;
    --code-bg: #1f2327;
    --shadow: 0 1px 2px rgb(0 0 0 / 40%), 0 8px 24px rgb(0 0 0 / 30%);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
a { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
code, pre { font: 0.9em/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; }
pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  overflow-x: auto;
  margin: 8px 0 16px;
}
pre code { background: none; padding: 0; }

.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 720px; }

header.top { border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; gap: 12px; height: 56px; }
header.top a.brand { display: flex; align-items: center; gap: 8px; color: var(--fg); text-decoration: none; font-weight: 600; }
header.top a.brand img { width: 28px; height: 28px; }
header.top nav { margin-left: auto; display: flex; gap: 16px; font-size: 15px; }
header.top nav a { color: var(--muted); text-decoration: none; }
header.top nav a:hover { color: var(--fg); }

.hero { text-align: center; padding: 56px 0 32px; }
.hero img.icon { width: 112px; height: 112px; margin: 0 auto 16px; }
.hero h1 { font-size: clamp(32px, 6vw, 48px); margin: 0; letter-spacing: -0.02em; }
.hero p.tag { font-size: clamp(17px, 2.6vw, 21px); color: var(--muted); margin: 8px auto 24px; max-width: 34em; }
.buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.button {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--fg);
  text-decoration: none;
  font-weight: 500;
}
.button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
@media (prefers-color-scheme: dark) { .button.primary { color: #0b1512; } }

.shot { border-radius: 10px; border: 1px solid var(--line); box-shadow: var(--shadow); overflow: hidden; }
.hero .shot { margin-top: 40px; }

section { padding: 40px 0; }
section h2 { font-size: 26px; margin: 0 0 16px; letter-spacing: -0.01em; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
@media (max-width: 640px) { .pair { grid-template-columns: 1fr; } }
.pair figcaption { color: var(--muted); font-size: 14px; margin-top: 6px; }
figure { margin: 0; }

.install h3 { margin: 24px 0 4px; }
.install p { margin: 4px 0; }
.note { color: var(--muted); font-size: 14px; }

footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; padding: 24px 0 40px; margin-top: 24px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; }
footer a { color: var(--muted); }

article h1 { font-size: 32px; margin: 40px 0 4px; }
article h2 { font-size: 21px; margin: 32px 0 8px; }
article li { margin: 4px 0; }