:root{--k-bg:#fbfaf7;--k-ink:#1d2024;--k-mute:#5b6168;--k-line:#e3e0d8;--k-accent:#0f6b4f;--k-accent-ink:#fff;--k-warn:#8a3b12}
@media (prefers-color-scheme:dark){:root{--k-bg:#14161a;--k-ink:#eceae4;--k-mute:#a5aab1;--k-line:#2b2f36;--k-accent:#3fb489;--k-accent-ink:#0c1512;--k-warn:#f0a070}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--k-bg);color:var(--k-ink);font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans",sans-serif}
a{color:var(--k-accent)}
.k-skip{position:absolute;left:-999px}.k-skip:focus{left:16px;top:8px}
.k-top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;padding:12px 16px;border-bottom:1px solid var(--k-line)}
.k-brand{display:flex;align-items:center;gap:10px;font-weight:700;text-decoration:none;color:var(--k-ink)}
.k-brand img{border-radius:8px}
.k-menu ul{display:flex;flex-wrap:wrap;gap:4px;margin:0;padding:0;list-style:none}
.k-menu a{display:inline-block;min-height:48px;padding:12px 10px;text-decoration:none;color:var(--k-ink)}
.k-menu a[aria-current]{color:var(--k-accent);font-weight:600}
.k-body{max-width:760px;margin:0 auto;padding:16px}
.k-crumbs ol{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 8px;padding:0;list-style:none;font-size:15px;color:var(--k-mute)}
.k-crumbs li+li:before{content:"/";margin-right:6px}
.k-sheet h1{font-size:1.9rem;line-height:1.25;margin:.4em 0 .6em}
.k-sheet h2{font-size:1.3rem;margin:1.6em 0 .5em}
.k-lead{font-size:1.08rem}
.k-steps li,.k-sheet li{margin:.35em 0}
.k-cta{display:inline-block;min-height:48px;padding:12px 18px;border-radius:10px;background:var(--k-accent);color:var(--k-accent-ink);font-weight:700;text-decoration:none}
.k-card,.k-qa{border:1px solid var(--k-line);border-radius:12px;padding:4px 16px;margin:12px 0}
.k-card h2,.k-qa h2{font-size:1.1rem}
.k-more{border-top:1px solid var(--k-line);margin-top:32px}
code{font-size:.92em}
.k-foot{border-top:1px solid var(--k-line);padding:16px;font-size:15px;color:var(--k-mute);max-width:760px;margin:24px auto 0}
.k-age strong{color:var(--k-warn)}
.k-legal{display:flex;flex-wrap:wrap;gap:4px 14px;padding:0;list-style:none}
.k-legal a{display:inline-block;min-height:44px;padding:10px 0}