:root{--floor:#f6f6f4;--ink:#1c1c1a;--led:#52525b;--panel:#ffffff;--rule:#dcdcd6}
*{box-sizing:border-box}body{margin:0;background:#f6f6f4;color:var(--ink);font-family:"Segoe UI","Leelawadee UI",Tahoma,sans-serif;font-size:17px;line-height:1.7}
h1,h2,h3{font-family:"Segoe UI","Leelawadee UI",Tahoma,sans-serif;line-height:1.1;font-weight:700}
.ad-nav a{font-family:"SFMono-Regular",Menlo,monospace;}
.fi-card h2{font-family:"SFMono-Regular",Menlo,monospace;}
.ad-meta{font-family:"SFMono-Regular",Menlo,monospace;}
a{color:#3f3f46}a:focus-visible{outline:3px solid var(--led);outline-offset:2px}
.ad-skip{position:absolute;left:-9999px}.ad-skip:focus{left:1rem;top:1rem;background:#fff;padding:.5rem}
.ad-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;padding:1rem 5vw;border-bottom:1px solid var(--rule);background:var(--panel)}
.ad-brand{color:var(--ink);text-decoration:none;font-weight:700;font-size:1.2rem}
.ad-nav{display:flex;flex-wrap:wrap;gap:.2rem 1.1rem}.ad-nav a{color:var(--ink);font-size:.88rem}.ad-nav a[aria-current]{color:var(--led)}
.ad-main{max-width:1000px;margin:0 auto;padding:2.8rem 5vw 3rem}
.ad-main h1{font-size:clamp(2.5rem,6.5vw,4.3rem);margin:0 0 1rem}
.ad-th{color:#3f3f3a}
.fi-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin:2.4rem 0;border:1px solid var(--rule);background:var(--panel)}
.fi-card{padding:1.3rem 1.2rem}.fi-card+.fi-card{border-left:1px solid var(--rule)}.fi-card h2{font-size:.95rem;margin:0 0 .4rem;color:var(--led);font-weight:400}.fi-card p{margin:0}
.ad-box{background:var(--panel);border:1px solid var(--rule);padding:1.2rem 1.4rem;margin-top:1.3rem}
.ad-hold[hidden]{display:none}
.ad-foot{border-top:1px solid var(--rule);padding:1.4rem 5vw 2.6rem;font-size:.9rem}.ad-foot p{margin:.2rem 0}.ad-foot-links{display:flex;gap:1rem;flex-wrap:wrap}
.ad-doc section{margin-top:1.8rem}.ad-meta{font-size:.85rem;color:#52524c}.ad-sum{font-size:.95rem;color:#3f3f3a;background:#f4f4f5;padding:.5rem .8rem}
@media(max-width:720px){.fi-cards{grid-template-columns:1fr}.fi-card+.fi-card{border-left:0;border-top:1px solid var(--rule)}}