/* Konu merkezleri: hub sayfaları ve konular dizini. */
.hub-page,.hub-index{width:min(calc(100% - 3rem),1180px);margin-inline:auto;padding:3rem 0 5.5rem;min-width:0}
.hub-head,.hub-index__head{margin-bottom:2.6rem}
.hub-head h1,.hub-index__head h1{margin:.55rem 0 1rem;font:650 clamp(2.2rem,5vw,3.6rem)/1.02 var(--serif);letter-spacing:-.03em;text-wrap:balance}
.hub-head>p,.hub-index__head>p{max-width:72ch;color:var(--ink-2);font-size:1.05rem;line-height:1.65;margin:.6rem 0}
.hub-nav{display:flex;flex-wrap:wrap;gap:.45rem;margin:1.4rem 0 0}
.hub-nav a{display:inline-flex;align-items:center;min-height:2.6rem;padding:.5rem .85rem;border:1px solid var(--line);border-radius:999px;background:var(--paper);color:var(--ink);font:600 .78rem/1.25 var(--mono);text-decoration:none}
.hub-nav a:hover{border-color:var(--green);color:var(--green-2)}
.hub-section{padding:2.1rem 0;border-top:1px solid var(--line)}
.hub-section h2{margin:0 0 1.3rem;font:650 1.65rem/1.12 var(--serif);letter-spacing:-.015em}
.hub-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.hub-grid .article-card{min-height:440px}
.hub-timeline{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.hub-milestone{background:var(--paper);padding:1rem 1.15rem;display:grid;grid-template-columns:minmax(120px,auto) 1fr;gap:.4rem 1.3rem;align-items:start}
.hub-milestone__date{font:700 .8rem/1 var(--mono);letter-spacing:.05em;color:var(--green-2);padding-top:.25rem}
.hub-milestone__event{margin:0;color:var(--ink-2);font-size:.95rem;line-height:1.55}
.hub-milestone__file{display:inline-block;margin-top:.45rem;color:var(--green-2);font:600 .78rem/1 var(--mono);text-decoration:none}
.hub-milestone__file:hover{text-decoration:underline}
.hub-glossary{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.hub-glossary div{background:var(--paper);padding:.95rem 1.1rem}
.hub-glossary b{display:block;color:var(--ink);font-size:.95rem;margin-bottom:.25rem}
.hub-glossary span{color:var(--ink-2);font-size:.88rem;line-height:1.55}
.hub-questions{margin:0;padding-left:1.2rem;color:var(--ink-2);max-width:76ch}
.hub-questions li{margin:.55rem 0;line-height:1.6}
.hub-index__grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.hub-index-card{text-decoration:none;color:inherit;display:flex;flex-direction:column;gap:.5rem;padding:1.5rem 1.45rem;border:1px solid var(--line);border-radius:16px;background:var(--paper);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.hub-index-card:hover{transform:translateY(-2px);border-color:var(--green);box-shadow:var(--shadow-hover)}
.hub-index-card__no{color:var(--green-2);font:700 .68rem/1 var(--mono);letter-spacing:.1em;text-transform:uppercase}
.hub-index-card h2{margin:0;font:650 1.45rem/1.12 var(--serif);letter-spacing:-.02em}
.hub-index-card p{margin:0;color:var(--ink-2);font-size:.92rem;line-height:1.55}
.hub-index-card__count{margin-top:auto;padding-top:.7rem;color:var(--ink-3);font:600 .72rem/1 var(--mono);letter-spacing:.06em;text-transform:uppercase}
@media(max-width:720px){
  .hub-page,.hub-index{width:min(calc(100% - 1.6rem),1180px);padding-top:2rem}
  .hub-milestone{grid-template-columns:1fr;gap:.2rem}
  .hub-milestone__date{padding-top:0}
}
@media print{.site-header{position:static}.hub-section{border-top:0}.hub-timeline,.hub-glossary{border:0}}