:root {
  --bg: #ffffff; --fg: #202124; --muted: #5f6368; --line: #e8eaed;
  --card: #f8f9fa; --blue: #1a73e8; --blue-fg: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #15171a; --fg: #e8eaed; --muted: #9aa0a6; --line: #2d3035; --card: #1e2125; --blue: #8ab4f8; --blue-fg: #15171a; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
nav { display: flex; align-items: center; gap: 10px; padding: 18px 0; }
nav img { width: 32px; height: 32px; }
nav .brand { font-weight: 700; flex: 1; color: inherit; text-decoration: none; }
nav a { color: var(--muted); text-decoration: none; }
.hero { padding: 56px 0 40px; text-align: center; }
.hero h1 { font-size: clamp(30px, 5vw, 48px); line-height: 1.15; margin: 0 0 16px; }
.hero p { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 auto 28px; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 8px; background: var(--blue); color: var(--blue-fg); font-weight: 700; text-decoration: none; }
.shot { display: block; width: 100%; max-width: 900px; margin: 40px auto 0; border-radius: 12px; border: 1px solid var(--line); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 48px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
h2 { font-size: 26px; margin: 56px 0 16px; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 8px; border-bottom: 1px solid var(--line); text-align: left; }
td:not(:first-child), th:not(:first-child) { text-align: center; width: 120px; }
ol li { margin: 6px 0; }
footer { margin-top: 64px; padding: 24px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer a { color: inherit; }
.prose { max-width: 720px; }
.prose h1 { font-size: 32px; }
.prose h2 { font-size: 20px; margin: 32px 0 8px; }