/* Shared header chrome (main site nav on article pages) */
:root{
  --paper: var(--paper-0);
  --ink: var(--ink-1);
  --pine: var(--sage-ink);
  --pine-mid: var(--sage);
  --amber: var(--clay);
  --amber-deep: var(--clay-ink);
  --mist: var(--ink-3);
  --line: var(--paper-3);
}
.crossing{display:inline-flex;align-items:center;gap:7px;height:14px}
.crossing .node{width:9px;height:9px;border-radius:50%;background:var(--pine);flex:none}
.crossing .node.end{width:13px;height:13px}
.crossing .node.amber{background:var(--amber)}
.crossing .seg{height:1.5px;background:var(--line);width:34px;position:relative;overflow:visible}
.crossing .seg::after{content:"";position:absolute;top:50%;left:0;width:7px;height:7px;border-radius:50%;background:var(--amber);transform:translate(-50%,-50%);animation:travel 3.4s cubic-bezier(.6,.05,.4,.95) infinite}
.crossing .seg:nth-child(4)::after{animation-delay:.4s}
@keyframes travel{0%{left:0;opacity:0}10%{opacity:1}90%{opacity:1}100%{left:100%;opacity:0}}
.nav-link{color:var(--mist);font-size:.9rem;font-weight:500;position:relative;padding:.3rem 0;transition:color .18s ease;text-decoration:none}
.nav-link:hover{color:var(--ink)}
.nav-link-active{color:var(--ink)}
.nav-link-active::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--amber);border-radius:2px}
.btn-primary{background:var(--amber);color:#FBF8F3;border-radius:12px;padding:.85rem 1.4rem;font-weight:500;font-size:.92rem;display:inline-flex;align-items:center;gap:.5rem;text-decoration:none;border:none;transition:transform .18s ease,box-shadow .18s ease,background .18s ease;cursor:pointer;box-shadow:0 1px 2px rgba(31,26,23,.10)}
.btn-primary:hover{transform:translateY(-1px);background:var(--amber-deep);box-shadow:0 8px 18px -8px rgba(217,78,38,.45)}
.display{font-family:var(--font-serif);letter-spacing:.04em;font-weight:var(--w-regular)}
html[lang="ko"] .nav-link{word-break:keep-all}

/* Mobile menu */
.site-header{position:sticky}
.mobile-nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;margin-right:-8px;border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--ink);cursor:pointer;transition:border-color .18s ease,background .18s ease}
.mobile-nav-toggle:hover{border-color:var(--pine);background:rgba(47,90,58,.04)}
.mobile-nav-toggle:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(217,78,38,.2)}
.mobile-nav-panel{
  position:absolute;left:0;right:0;top:100%;z-index:50;
  background:rgba(252,251,248,.98);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  box-shadow:0 18px 40px -24px rgba(31,26,23,.22);
  padding:8px 20px 20px;
  max-height:min(78vh,520px);overflow-y:auto;
}
.mobile-nav-panel[hidden]{display:none}
.mobile-nav-links{display:flex;flex-direction:column}
.mobile-nav-link{
  display:block;padding:14px 4px;font-size:1.05rem;font-weight:500;color:var(--ink);
  text-decoration:none;border-bottom:1px solid var(--line);
  transition:color .18s ease,padding-left .18s ease;
}
.mobile-nav-link:last-child{border-bottom:none}
.mobile-nav-links .nav-to{cursor:pointer}
.mobile-nav-link:hover{color:var(--pine);padding-left:8px}
.mobile-nav-link-active{color:var(--pine);font-weight:600}
.mobile-nav-footer{display:flex;flex-direction:column;gap:12px;margin-top:16px;padding-top:4px}
.mobile-nav-backdrop{
  position:fixed;inset:0;top:70px;z-index:35;
  background:rgba(31,26,23,.35);
}
.mobile-nav-backdrop[hidden]{display:none}
body.mobile-nav-open{overflow:hidden}
@media (min-width:768px){
  .mobile-nav-panel,.mobile-nav-backdrop{display:none!important}
}