:root{--bg:#fff;--fg:#14232e;--muted:#566574;--line:#dde4ea;--brand:#052b42;--brand-fg:#fff;--accent:#9fcc1f;--soft:#f3f7f9;--mark:#fff1a8;--markfg:#3d3200;--link:#0b5f8a;--logo-ink:#052b42}
@media (prefers-color-scheme:dark){:root{--bg:#07151e;--fg:#e4ecf2;--muted:#9bacba;--line:#1d3140;--brand:#c4f135;--brand-fg:#052b42;--accent:#c4f135;--soft:#0e2230;--mark:#5b4a00;--markfg:#fff3c4;--link:#8fd0f2;--logo-ink:#f2f7fa}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:5rem}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.7 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--link);text-underline-offset:.15em}
a:focus-visible,.card:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-999px;top:0;background:var(--brand);color:var(--brand-fg);padding:.6rem 1rem;z-index:20}
.skip:focus{left:0}
header.site{position:sticky;top:0;z-index:10;background:var(--bg);border-bottom:1px solid var(--line)}
header.site::after{content:"";display:block;height:3px;background:linear-gradient(90deg,#052b42 0,#547e2f 45%,#c4f135 100%)}
.bar{max-width:1080px;margin:0 auto;padding:.65rem 1.25rem;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem 1.5rem}
.brand{display:flex;align-items:center;text-decoration:none}
.logo{display:block;height:1.65rem;width:auto}
.logo .lg-ink{fill:var(--logo-ink)}
.logo .lg-lime{fill:#c4f135}
.logo .lg-grad{fill:url(#lg-gradient)}
header nav{display:flex;flex-wrap:wrap;gap:.25rem 1.1rem;font-size:.94rem}
header nav a{color:var(--fg);text-decoration:none;padding:.25rem 0;border-bottom:2px solid transparent}
header nav a:hover{border-bottom-color:var(--line)}
header nav a[aria-current=page]{border-bottom-color:var(--accent);font-weight:600}
header nav a.lang{color:var(--muted)}
.wrap{max-width:1080px;margin:0 auto;padding:2rem 1.25rem 3rem}
.wrap.narrow{max-width:760px}
.wrap.doc{display:grid;grid-template-columns:260px minmax(0,1fr);gap:3rem;align-items:start}
.toc{position:sticky;top:5.5rem;max-height:calc(100vh - 7rem);overflow:auto;font-size:.9rem;border-left:2px solid var(--line);padding-left:1rem}
.toc-title{margin:0 0 .5rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:.76rem}
.toc ol{list-style:none;margin:0;padding:0}
.toc li{margin:.15rem 0}
.toc a{display:block;padding:.2rem 0;color:var(--fg);text-decoration:none}
.toc a:hover{color:var(--link);text-decoration:underline}
article{max-width:720px}
h1{font-size:clamp(1.6rem,3.2vw,2.15rem);line-height:1.25;margin:0 0 .4rem;color:var(--fg)}
h1 small{font-size:.55em;font-weight:500;color:var(--muted)}
h2{font-size:1.25rem;line-height:1.35;margin:2.4rem 0 .6rem}
h2 .num{color:var(--link);margin-right:.2rem}
.meta{color:var(--muted);margin:0 0 1.5rem;font-size:.92rem}
.lead{font-size:1.1rem;color:var(--muted)}
p,li{overflow-wrap:anywhere}
ul,ol{padding-left:1.4rem}
li{margin:.3rem 0}
mark{background:var(--mark);color:var(--markfg);padding:0 .2em;border-radius:3px}
.cards{list-style:none;margin:2rem 0 0;padding:0;display:grid;gap:1rem}
.card{display:block;padding:1.1rem 1.25rem;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:.8rem;text-decoration:none;color:var(--fg);background:var(--soft)}
.card:hover{border-color:var(--accent)}
.card strong{display:block;font-size:1.1rem;margin-bottom:.2rem}
.card span{display:block;color:var(--muted)}
.card em{display:inline-block;margin-top:.5rem;font-style:normal;color:var(--link);font-weight:600}
footer.site{border-top:1px solid var(--line);background:var(--soft);color:var(--muted);font-size:.88rem;padding:1.75rem 1.25rem}
footer.site>*{max-width:1080px;margin-left:auto;margin-right:auto}
.foot{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:1.5rem 3rem}
.org{margin:0;display:grid;gap:.35rem}
.org div{display:grid;grid-template-columns:8.5rem minmax(0,1fr);gap:.75rem}
.org dt{font-weight:600;color:var(--fg)}
.org dd{margin:0;overflow-wrap:anywhere}
.links{list-style:none;margin:0;padding:0}
.links li{margin:.25rem 0}
.small{margin:.9rem auto 0}
@media (max-width:860px){.wrap.doc{grid-template-columns:1fr;gap:1rem}.toc{position:static;max-height:none;border-left:0;padding:.75rem 1rem;background:var(--soft);border-radius:.6rem}.foot{grid-template-columns:1fr}.org div{grid-template-columns:1fr;gap:0}}
@media print{header.site,.toc,.skip{display:none}footer.site{background:none}body{font-size:11pt;background:#fff;color:#000}.wrap.doc{display:block}a{color:#000}mark{background:none;color:#000;border:1px dashed #666}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}