*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --ink:#1c1917;--body:#44403c;--muted:#78716c;--line:#e7e5e4;
  --amber:#b45309;--amber-soft:#fffbeb;--slate:#334155;--slate-soft:#f1f5f9;
  --rust:#9a3412;--rust-soft:#fff7ed;--header-h:58px;--max:940px;
}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",system-ui,sans-serif;color:var(--body);background:#fff;line-height:1.82;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--amber);text-decoration:none}
a:hover{text-decoration:underline}

.site-header{position:sticky;top:0;z-index:400;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);box-shadow:0 1px 0 var(--amber-soft)}
.header-inner{max-width:1080px;margin:0 auto;padding:0 1.15rem;display:flex;align-items:center;justify-content:space-between;min-height:var(--header-h)}
.brand{display:flex;align-items:center;gap:.75rem;color:var(--ink);font-size:.88rem;text-decoration:none}
.brand:hover{text-decoration:none}
.brand em{font-style:normal;font-weight:700;color:var(--amber)}
.brand span{line-height:1.35;max-width:360px}

.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:.5rem;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);transition:transform .2s,opacity .2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.site-nav ul{display:flex;gap:1rem;list-style:none}
.site-nav a{color:var(--muted);font-size:.86rem;text-decoration:none;padding:.25rem 0;border-bottom:2px solid transparent}
.site-nav a:hover,.site-nav a.active{color:var(--amber);border-bottom-color:var(--rust);font-weight:600}

.ads-top-bar{background:var(--amber-soft);border-bottom:1px solid var(--line);padding:.55rem 0}
#applist{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.applist-title{font-size:.76rem;color:var(--muted);white-space:nowrap}
#ads{display:flex;gap:.75rem;flex-wrap:wrap}
.ads-item figure{margin:0;text-align:center}
.ads-item img{border-radius:10px}
.ads-item .caption{font-size:.66rem;color:var(--muted);margin-top:.2rem;max-width:68px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.hero-fork{
  background:linear-gradient(165deg,var(--slate-soft) 0%,#fff 42%,var(--rust-soft) 100%);
  border-bottom:3px solid var(--line);
  padding:2.6rem 1.15rem 2.2rem;
  position:relative;overflow:hidden;
}
.hero-fork::before{
  content:"";position:absolute;top:-40%;right:-8%;width:320px;height:320px;
  background:radial-gradient(circle,rgba(180,83,9,.08) 0%,transparent 70%);
  pointer-events:none;
}
.fork-grid{
  max-width:1080px;margin:0 auto;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:2.5rem;align-items:stretch;
}
.fork-visual{
  position:relative;border-radius:18px 18px 18px 4px;overflow:hidden;
  border:2px solid #fff;box-shadow:0 16px 44px rgba(51,65,85,.12);
  align-self:center;
}
.fork-visual img{width:100%;aspect-ratio:5/4;object-fit:cover}
.fork-badge{
  position:absolute;top:1rem;right:1rem;
  background:var(--slate);color:#fff;font-size:.7rem;font-weight:600;
  padding:.32rem .78rem;border-radius:4px;letter-spacing:.04em;
}
.fork-copy{display:flex;flex-direction:column;justify-content:center;padding:.4rem 0}
.fork-eyebrow{
  display:inline-flex;align-items:center;gap:.4rem;
  font-size:.74rem;font-weight:700;color:var(--rust);
  background:#fff;border:1px solid #fed7aa;padding:.24rem .7rem;border-radius:4px;
  margin-bottom:.9rem;width:fit-content;
}
.fork-eyebrow::before{content:"";width:6px;height:6px;background:var(--amber);border-radius:50%}
.fork-copy h1{font-size:clamp(1.36rem,2.7vw,1.78rem);line-height:1.32;color:var(--ink);font-weight:700;margin-bottom:.85rem}
.fork-lede{font-size:.97rem;color:var(--body);margin-bottom:.7rem;text-align:justify}
.pane-nav{
  display:grid;grid-template-columns:repeat(3,1fr);gap:.4rem;margin-top:1.1rem;
}
.pane-nav a{
  font-size:.76rem;color:var(--slate);background:#fff;border:1px solid var(--line);
  padding:.42rem .55rem;border-radius:6px;text-align:center;text-decoration:none;
  transition:background .15s,color .15s,border-color .15s;
}
.pane-nav a:hover,.pane-nav a.is-active{background:var(--amber);color:#fff;border-color:var(--amber);text-decoration:none}

.article-flow{max-width:var(--max);margin:0 auto;padding:2.3rem 1.15rem 3.6rem}
.flow-block{margin-bottom:2.4rem;scroll-margin-top:calc(var(--header-h) + 12px)}
.flow-block h2{
  font-size:1.1rem;color:var(--slate);font-weight:700;margin-bottom:.85rem;
  padding-bottom:.45rem;border-bottom:2px dotted var(--line);
}
.flow-block p{margin-bottom:.95rem;text-align:justify;color:#374151}
.flow-block ul,.flow-block ol{margin:.6rem 0 1rem 1.15rem;color:#374151}
.flow-block li{margin-bottom:.4rem}
.flow-block figure{
  margin:1.15rem 0;border-radius:12px;overflow:hidden;
  border:1px solid var(--line);box-shadow:0 3px 16px rgba(28,25,23,.05);
}
.flow-block figcaption{font-size:.79rem;color:var(--muted);padding:.5rem .85rem;background:var(--slate-soft);text-align:center}
.note-bar{
  background:var(--rust-soft);border-left:4px solid var(--rust);
  padding:.82rem 1rem;border-radius:0 8px 8px 0;font-size:.9rem;margin:1rem 0;color:#7c2d12;
}
.signal-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:.65rem;margin:1rem 0;
}
.signal-grid div{
  background:var(--amber-soft);border:1px solid #fde68a;border-radius:8px;
  padding:.65rem .75rem;font-size:.86rem;color:#78350f;
}
.signal-grid strong{display:block;font-size:.78rem;color:var(--amber);margin-bottom:.2rem}

.qa-wrap{background:#fafaf9;border:1px solid var(--line);border-radius:14px;padding:1.3rem 1.2rem;margin-top:.5rem}
.qa-wrap h3{font-size:.96rem;color:var(--ink);margin-bottom:.8rem}
.qa-wrap dl{margin:0}
.qa-wrap dt{font-weight:600;color:var(--amber);margin-top:.8rem;font-size:.92rem}
.qa-wrap dt:first-child{margin-top:0}
.qa-wrap dd{margin:.3rem 0 0 0;color:#57534e;font-size:.89rem;line-height:1.72}
.closing-box{
  margin-top:2rem;padding:1.3rem 1.15rem;
  background:linear-gradient(120deg,var(--slate-soft),#fff);
  border:1px dashed #cbd5e1;border-radius:12px;
}
.closing-box h3{font-size:.98rem;color:var(--ink);margin-bottom:.6rem}
.closing-box p{font-size:.91rem;margin-bottom:.55rem}
.more-links{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.4rem;padding-top:1.2rem;border-top:1px dashed var(--line)}
.more-links a{font-size:.83rem;color:var(--muted);background:#fff;padding:.3rem .75rem;border-radius:6px;border:1px solid var(--line)}
.more-links a:hover{color:var(--amber);border-color:#fcd34d;text-decoration:none}

.prose-page{max-width:var(--max);margin:0 auto;padding:2rem 1.15rem 3rem}
.prose-page h1{font-size:1.45rem;margin-bottom:1rem;color:var(--amber)}
.prose-page p{margin-bottom:.95rem}

.error-page{max-width:var(--max);margin:4rem auto;padding:2rem 1.15rem;text-align:center}
.error-page h1{font-size:3rem;color:var(--amber);margin-bottom:.5rem}

.site-footer{background:#fafaf9;border-top:1px solid var(--line);padding:1.55rem 1rem;text-align:center;font-size:.82rem;color:var(--muted)}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:.45rem 1rem;margin-bottom:.6rem}
.footer-links a{color:var(--muted)}
.footer-sub{font-size:.75rem;margin-top:.35rem;color:#a8a29e}

@media(max-width:820px){
  .fork-grid{grid-template-columns:1fr;gap:1.6rem}
  .fork-visual{order:2}
  .fork-copy{order:1}
  .pane-nav{grid-template-columns:repeat(2,1fr)}
  .signal-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav-toggle{display:flex}
  .site-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:.75rem 1rem;display:none;box-shadow:0 6px 18px rgba(0,0,0,.07)}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:0}
  .site-nav li{border-bottom:1px solid var(--line)}
  .site-nav a{display:block;padding:.65rem 0;border-bottom:none}
  .hero-fork{padding:1.7rem 1rem 1.5rem}
  .pane-nav{grid-template-columns:1fr 1fr}
}