/* tarihsel-donemler.html — v2.css üzerine ek; yalnızca bu sayfaya özgü kurallar */
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.td-hero{max-width:1200px;margin:0 auto;padding:clamp(96px,14vw,150px) var(--pad) 8px}
.td-hero h1{font-size:clamp(2.4rem,8vw,5rem)}
.td-intro{max-width:680px;margin-top:18px}
.td-hero .td-intro .lede{max-width:none;margin:0 0 14px;font-size:clamp(1rem,2.4vw,1.1rem);line-height:1.65;color:#e4dccb}
.td-hero .td-intro .lede:last-child{margin-bottom:0}
.donemler{padding-top:clamp(28px,5vw,56px)}
.era-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(6,1fr);gap:clamp(12px,2vw,24px)}
.era{position:relative;grid-column:span 2;min-height:clamp(300px,34vw,430px);display:flex;align-items:flex-end;overflow:hidden;text-decoration:none;background:#000;border:1px solid var(--line);isolation:isolate}
.era:nth-child(-n+2){grid-column:span 3}
.era img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:top;z-index:-2;transition:transform .8s cubic-bezier(.2,.7,.2,1);opacity:.78}
.era::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,#0b0a0900 15%,#0b0a09d9 72%,#0b0a09 100%)}
.era:hover img,.era:focus-visible img{transform:scale(1.05)}
.era:hover,.era:focus-visible,.era[aria-current=true]{border-color:var(--gold)}
.era-t{padding:clamp(16px,2.6vw,28px);width:100%}
.era .yil{display:block;font:500 clamp(1.7rem,3.6vw,2.6rem)/1.05 var(--serif);color:var(--gold-l);letter-spacing:.02em}
.era p{margin:8px 0 0;font-size:.9rem;color:#d8d0bd}
.era .cnt{display:inline-block;margin-top:10px;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--gold);border-top:1px solid var(--gold-d);padding-top:8px}
.era-detay{background:var(--bg2);border-top:1px solid var(--line);scroll-margin-top:60px}
.era-detay[hidden]{display:none}
.era-in{max-width:1200px;margin:0 auto}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 26px;padding:0;list-style:none}
.tabs a{display:flex;align-items:center;min-height:44px;padding:0 16px;border:1px solid var(--line);text-decoration:none;font-size:.9rem;color:var(--muted)}
.tabs a:hover{border-color:var(--gold-d);color:var(--ink)}
.tabs a[aria-current=true]{background:var(--gold);border-color:var(--gold);color:#17130a;font-weight:600}
.era-in h2{font-size:clamp(1.8rem,4.6vw,3rem)}
.era-in .alt{display:block;margin:6px 0 28px;font:italic 1rem var(--serif);color:var(--gold-l);letter-spacing:.06em}
.konu{display:flex;flex-direction:column;gap:12px;text-decoration:none;color:inherit}
.konu h3{font-size:1.05rem;line-height:1.25}
.konu .meta{font-size:.82rem;color:var(--muted);letter-spacing:.04em}
.konu .frame{position:relative;border:1px solid var(--line);background:#000;overflow:hidden;aspect-ratio:1800/2572}
.konu .frame img{width:100%;height:100%;object-fit:cover;object-position:top;transition:transform .6s}
.konu .no{position:absolute;left:8px;top:8px;z-index:1;background:#0b0a09d9;border:1px solid var(--gold-d);color:var(--gold-l);font:italic .85rem var(--serif);padding:1px 9px}
.konu .stack{position:absolute;right:8px;top:8px;background:#0b0a09d9;border:1px solid var(--gold-d);color:var(--gold-l);font-size:.72rem;padding:2px 8px;letter-spacing:.06em}
a.konu:hover .frame,a.konu:focus-visible .frame{border-color:var(--gold)}
a.konu:hover img{transform:scale(1.04)}
.konu-grup{grid-column:1/-1;border-top:1px solid var(--line);padding:14px 0 0;margin:6px 0 0}
.konu-grup header{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;margin-bottom:14px}
.konu-grup header .no{font:italic .85rem var(--serif);color:var(--gold-l);border:1px solid var(--gold-d);padding:1px 9px}
.konu-grup header h3{font-size:1.15rem;line-height:1.25}
.konu-grup header .meta{font-size:.82rem;color:var(--muted);letter-spacing:.04em}
.arsiv-not{grid-column:1/-1;margin-top:10px;padding:14px 18px;border-left:2px solid var(--gold-d);background:#ffffff08;max-width:640px}
.arsiv-not .et{display:block;font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold)}
.arsiv-not h3{font-size:1rem;font-weight:400;color:var(--ink);margin:6px 0 4px;line-height:1.3}
.arsiv-not p{margin:0;font-size:.85rem;color:var(--muted)}
@media (max-width:900px){.era-grid{grid-template-columns:repeat(2,1fr)}.era,.era:nth-child(n){grid-column:span 1;min-height:clamp(240px,52vw,340px)}.era:last-child{grid-column:span 2}}
@media (max-width:560px){.era-grid{grid-template-columns:1fr}.era,.era:nth-child(n),.era:last-child{grid-column:span 1;min-height:clamp(220px,62vw,300px)}.tabs a{padding:0 12px;font-size:.85rem}}
@media (prefers-reduced-motion:reduce){.era img,.konu .frame img{transition:none}}