:root{--bg: #ffffff;--bg-subtle: #f6f6f8;--border: #e4e4e9;--text: #16161a;--text-muted: #5c5c68;--accent: #3b5bdb;--accent-soft: #eef1fd;--radius: 14px;--max-width: 46rem;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #101014;--bg-subtle: #18181d;--border: #2a2a32;--text: #f2f2f5;--text-muted: #a3a3b0;--accent: #8fa4ff;--accent-soft: #1b2140}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3{line-height:1.25;letter-spacing:-.015em;margin:0}h1{font-size:clamp(1.9rem,5vw,2.6rem);font-weight:650}h2{font-size:1.3rem;font-weight:620;margin-top:2.5rem;margin-bottom:.6rem}h3{font-size:1.05rem;font-weight:620;margin-top:1.75rem;margin-bottom:.35rem}p{margin:0 0 1rem}ul{margin:0 0 1rem;padding-inline-start:1.35rem}li{margin-bottom:.4rem}a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:2px}strong{font-weight:620}.muted{color:var(--text-muted)}.small{font-size:.9rem}.lead{font-size:1.1rem;color:var(--text-muted)}.card{background:var(--bg-subtle);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1.25rem;margin-bottom:1rem}.card>:last-child{margin-bottom:0}.callout{background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 25%,transparent);border-radius:var(--radius);padding:1.1rem 1.25rem;margin:1.5rem 0}.callout>:last-child{margin-bottom:0}.button{display:inline-flex;align-items:center;gap:.4rem;background:var(--accent);color:var(--bg);padding:.6rem 1.15rem;border-radius:999px;font-weight:600;font-size:.95rem;text-decoration:none}.button-row{display:flex;flex-wrap:wrap;gap:.6rem;margin:1.5rem 0 1rem}.button.secondary{background:transparent;color:var(--text);border:1px solid var(--border)}