:root{--glass:#f1fbf7;--ink:#123329;--cell:#0f766e;--card:#ffffff}
*{box-sizing:border-box}body{margin:0;background:#f1fbf7;color:var(--ink);font-family:"Avenir Next","Leelawadee UI",Tahoma,sans-serif;font-size:17px;line-height:1.75}
h1,h2,h3{font-family:"Avenir Next","Leelawadee UI",Tahoma,sans-serif;line-height:1.15;font-weight:600}
.bf-nav a{font-family:"SFMono-Regular",Menlo,monospace;}
.fi-card h2{font-family:"SFMono-Regular",Menlo,monospace;}
.bf-meta{font-family:"SFMono-Regular",Menlo,monospace;}
a{color:#115e59}a:focus-visible{outline:3px solid var(--cell);outline-offset:3px;border-radius:50px}
.bf-skip{position:absolute;left:-9999px}.bf-skip:focus{left:1rem;top:1rem;background:#fff;padding:.5rem}
.bf-top{max-width:980px;margin:1.2rem auto 0;padding:.9rem 1.4rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.8rem;background:var(--card);border-radius:60px;box-shadow:0 8px 24px rgba(18,51,41,.08)}
.bf-brand{color:var(--ink);text-decoration:none;font-weight:700;font-size:1.2rem}
.bf-nav{display:flex;flex-wrap:wrap;gap:.3rem}.bf-nav a{padding:.35rem .8rem;border-radius:30px;color:var(--ink);text-decoration:none}.bf-nav a[aria-current]{background:#ccfbf1}
.bf-main{max-width:980px;margin:0 auto;padding:2.6rem 1.4rem 3rem}
.bf-main h1{font-size:clamp(2.3rem,5.6vw,3.7rem);margin:.4rem 0 1rem}
.bf-th{color:#1f5a4c}
.fi-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin:2.2rem 0}
.fi-card{background:var(--card);border-radius:50%/30%;padding:1.8rem 1.6rem;text-align:center;box-shadow:0 8px 24px rgba(18,51,41,.08)}.fi-card h2{font-size:1.1rem;margin:0 0 .4rem;color:var(--cell)}.fi-card p{margin:0}
.bf-box{background:var(--card);border-radius:28px;padding:1.3rem 1.6rem;margin-top:1.3rem;box-shadow:0 8px 24px rgba(18,51,41,.08)}
.bf-hold[hidden]{display:none}
.bf-foot{max-width:980px;margin:0 auto;padding:1.4rem 1.4rem 2.6rem;font-size:.9rem}.bf-foot p{margin:.2rem 0}.bf-foot-links{display:flex;gap:1rem;flex-wrap:wrap}
.bf-doc section{margin-top:1.8rem}.bf-meta{font-size:.9rem;color:#1f5a4c}.bf-sum{font-size:.95rem;color:#1f5a4c;background:#ccfbf1;border-radius:16px;padding:.5rem .9rem}
@media(max-width:760px){.fi-cards{grid-template-columns:1fr}}