:root {
    --bg: #ffffff;
    --panel: #f6f8fa;
    --border: #d0d7de;
    --text: #1f2328;
    --muted: #59636e;
    --accent: #0969da;
    --accent-strong: #0550ae;
    --code-bg: #f2f4f7;
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0d1117;
        --panel: #161b22;
        --border: #30363d;
        --text: #e6edf3;
        --muted: #8b949e;
        --accent: #58a6ff;
        --accent-strong: #79b8ff;
        --code-bg: #1f242c;
    }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); }
body { font: 17px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
a { color: var(--accent); }
img { max-width: 100%; height: auto; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }

.site-header { background: var(--panel); border-bottom: 1px solid var(--border); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); text-decoration: none; }
.brand img { border-radius: 8px; }
.site-header nav { display: flex; align-items: center; gap: 4px 16px; flex-wrap: wrap; font-size: 15px; }
.site-header nav a { color: var(--text); text-decoration: none; }
.site-header nav a:hover { color: var(--accent); }
.site-header nav a.cta { background: var(--accent); color: #fff; padding: 6px 12px; border-radius: 6px; }
.site-header nav a.cta:hover { background: var(--accent-strong); color: #fff; }

.content { padding-top: 32px; padding-bottom: 56px; }
h1 { font-size: 34px; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 24px; line-height: 1.3; margin: 40px 0 12px; }
h3 { font-size: 19px; margin: 24px 0 8px; }
p, ul, ol { margin: 0 0 16px; }
li { margin: 6px 0; }
code { font: 0.9em ui-monospace, "SF Mono", Consolas, monospace; background: var(--code-bg); padding: 2px 5px; border-radius: 4px; overflow-wrap: anywhere; }
pre { background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; overflow-x: auto; font-size: 14px; line-height: 1.5; }
pre code { background: none; padding: 0; overflow-wrap: normal; }
table { width: 100%; border-collapse: collapse; margin: 0 0 20px; font-size: 15px; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--panel); }
blockquote { margin: 0 0 16px; padding: 10px 16px; border-left: 4px solid var(--accent); background: var(--panel); border-radius: 0 6px 6px 0; }

.prose { max-width: 760px; }
.meta { color: var(--muted); font-size: 14px; }
.crumbs { font-size: 14px; color: var(--muted); margin-bottom: 8px; }
.lead { font-size: 20px; color: var(--muted); }

.hero { padding: 24px 0 8px; }
.hero h1 { font-size: 40px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 20px 0; }
.button { display: inline-block; padding: 10px 18px; border-radius: 8px; text-decoration: none; font-weight: 600; border: 1px solid var(--accent); }
.button.primary { background: var(--accent); color: #fff; }
.button.primary:hover { background: var(--accent-strong); }
.button.secondary { color: var(--accent); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 0 0 16px; }
.feature { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; }
.feature h3 { margin-top: 0; }
.feature p { margin: 0; color: var(--muted); font-size: 16px; }

.steps { counter-reset: step; list-style: none; padding: 0; }
.steps li { counter-increment: step; position: relative; padding-left: 44px; margin: 14px 0; }
.steps li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 700; display: grid; place-items: center; font-size: 15px; }

.card-list { list-style: none; padding: 0; display: grid; gap: 14px; }
.card { border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; margin: 0; }
.card a { text-decoration: none; }
.card h3 { margin: 0 0 6px; color: var(--accent); }
.card p { margin: 0 0 6px; }

.faq details { border: 1px solid var(--border); border-radius: 8px; padding: 12px 16px; margin: 0 0 10px; }
.faq summary { font-weight: 600; cursor: pointer; }
.faq details p { margin: 10px 0 0; }

.ad-slot { margin: 40px 0 0; padding-top: 16px; border-top: 1px solid var(--border); min-height: 100px; }

.site-footer { background: var(--panel); border-top: 1px solid var(--border); padding: 28px 0; font-size: 15px; color: var(--muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 12px 0; }
.site-footer nav a { color: var(--muted); }
.site-footer strong { color: var(--text); }
.site-footer .copy { margin: 12px 0 0; font-size: 14px; }

@media (max-width: 600px) {
    body { font-size: 16px; }
    h1, .hero h1 { font-size: 28px; }
    h2 { font-size: 21px; }
}

figure { margin: 24px 0; text-align: center; }
figure img { display: block; margin: 0 auto; border-radius: 12px; border: 1px solid var(--border); background: #f6f8fa; }
figcaption { margin-top: 8px; font-size: 14px; color: var(--muted); }