:root {
  --bg: #f7f9fb;
  --surface: #ffffff;
  --text: #16202a;
  --muted: #52606d;
  --accent: #0f766e;
  --accent-text: #ffffff;
  --border: #d9e2ec;
  --code-bg: #eef2f6;
  --hero: #12344d;
  --hero-text: #f0f4f8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1b26;
    --surface: #132634;
    --text: #e3eaf0;
    --muted: #9fb3c8;
    --accent: #5eead4;
    --accent-text: #0d1b26;
    --border: #243b4f;
    --code-bg: #1a3042;
    --hero: #12344d;
    --hero-text: #f0f4f8;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
header.hero { background: var(--hero); color: var(--hero-text); padding: 48px 0 40px; }
header.hero a { color: #5eead4; }
.brand { display: flex; align-items: center; gap: 16px; }
.brand img { width: 72px; height: 72px; border-radius: 16px; flex: none; }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.2; margin: 0; }
.tagline { font-size: 1.15rem; margin: 16px 0 24px; max-width: 46em; color: #d9e2ec; }
.buttons { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  display: inline-block; padding: 10px 18px; border-radius: 8px;
  background: #5eead4; color: #0d1b26; font-weight: 600; text-decoration: none;
}
.button.secondary { background: transparent; color: #f0f4f8; border: 1px solid #7b8ea0; }
header.hero .button { color: #0d1b26; }
header.hero .button.secondary { color: #f0f4f8; }
nav.top { background: var(--hero); padding: 10px 0; }
nav.top a { color: #d9e2ec; text-decoration: none; margin-right: 16px; font-weight: 600; }
main { padding: 32px 0 48px; }
section { margin: 0 0 40px; }
h2 { font-size: 1.5rem; margin: 40px 0 12px; }
h3 { font-size: 1.15rem; margin: 28px 0 8px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; }
.card h3 { margin-top: 0; }
.muted { color: var(--muted); }
figure { margin: 0 0 32px; }
figure img { width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--border); }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; }
code { background: var(--code-bg); padding: 1px 5px; border-radius: 4px; }
pre { background: var(--code-bg); padding: 12px 14px; border-radius: 8px; overflow-x: auto; }
pre code { background: none; padding: 0; }
table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; margin: 12px 0; }
th, td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; vertical-align: top; }
th { background: var(--code-bg); }
footer { border-top: 1px solid var(--border); padding: 24px 0 40px; color: var(--muted); font-size: 0.9rem; }
main > h1 { margin: 8px 0 16px; }