:root{
  --fa-ink:#1f2530; --fa-mut:#5c6675; --fa-line:#e3e7ee; --fa-bg:#f6f7f9;
  --fa-accent:#e8620a; --fa-accent-dk:#c9500a; --fa-tag:#fff2e8; --fa-card:#fff;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--fa-ink);background:var(--fa-bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--fa-accent-dk);text-decoration:none}
a:hover{text-decoration:underline}
code{font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace}

.fa-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.5rem;
  max-width:900px;margin:0 auto;padding:1rem 1.2rem;border-bottom:2px solid var(--fa-accent)}
.fa-brand{font-weight:800;font-size:1.15rem;color:var(--fa-ink)}
.fa-nav a{margin-left:1rem;color:var(--fa-mut);font-weight:600}
.fa-main{max-width:900px;margin:0 auto;padding:1.4rem 1.2rem 2.5rem}
.fa-footer{max-width:900px;margin:0 auto;padding:1.4rem 1.2rem 2.5rem;border-top:1px solid var(--fa-line);
  color:var(--fa-mut);font-size:.9rem}

.fa-hero h1{font-size:2rem;margin:.3rem 0 .6rem}
.fa-lead{font-size:1.08rem;color:var(--fa-mut);max-width:70ch}

.fa-cards{list-style:none;padding:0;margin:1.4rem 0 0;display:grid;gap:.8rem;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.fa-cards.small{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.fa-card{background:var(--fa-card);border:1px solid var(--fa-line);border-radius:10px;transition:.12s}
.fa-card:hover{border-color:var(--fa-accent);box-shadow:0 2px 10px rgba(232,98,10,.08)}
.fa-card a{display:block;padding:.9rem 1rem;color:var(--fa-ink)}
.fa-card-title{display:block;font-weight:700}
.fa-card-desc{display:block;color:var(--fa-mut);font-size:.9rem;margin-top:.25rem}

.fa-crumb{font-size:.85rem;color:var(--fa-mut);margin-bottom:.6rem}
.fa-page h1{font-size:1.7rem;margin:.2rem 0 .5rem}
.fa-page h2{font-size:1.25rem;margin:2rem 0 .6rem}

.fa-codes{display:grid;gap:.7rem;margin-top:1.2rem}
.fa-code{background:var(--fa-card);border:1px solid var(--fa-line);border-left:4px solid var(--fa-accent);
  border-radius:8px;padding:.85rem 1rem}
.fa-code-head{display:flex;align-items:center;gap:.7rem;flex-wrap:wrap}
.fa-code-tag{background:var(--fa-tag);color:var(--fa-accent-dk);font-weight:800;font-size:1.05rem;
  padding:.15rem .55rem;border-radius:6px}
.fa-code-mean,.fa-code-fix{margin:.5rem 0 0}
.fa-code-fix{color:var(--fa-ink)}
.fa-code-mean{color:var(--fa-mut)}

.copy-btn{margin-left:auto;background:var(--fa-accent);color:#fff;border:0;border-radius:6px;
  padding:.35rem .7rem;font-size:.82rem;font-weight:600;cursor:pointer}
.copy-btn:hover{background:var(--fa-accent-dk)}
.copy-btn.copied{background:#2e7d32}

.fa-notes{background:#fff;border:1px solid var(--fa-line);border-radius:8px;padding:.3rem 1rem}
.fa-faq details{background:#fff;border:1px solid var(--fa-line);border-radius:8px;padding:.7rem 1rem;margin:.5rem 0}
.fa-faq summary{font-weight:600;cursor:pointer}
.fa-faq p{color:var(--fa-mut);margin:.6rem 0 0}