.ref-is{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;list-style:none;padding:0;margin:24px 0 0}
.ref-is li{border:1px solid var(--line,#e3e6ec);border-radius:10px;padding:16px 18px;background:#fff}
.ref-is h3{font-size:1rem;line-height:1.3;margin:0 0 6px;color:#1B2B4B}
.ref-is p{font-size:.92rem;line-height:1.55;margin:0;color:#3a4357}
.ref-sss{max-width:900px;margin:8px 0 0}
.ref-sss details{border-bottom:1px solid var(--line,#e3e6ec);padding:14px 0}
.ref-sss summary{font-weight:600;cursor:pointer;color:#1B2B4B;line-height:1.4}
.ref-sss details>div{margin-top:8px;line-height:1.6;color:#3a4357}
.pg-metin{font-size:.9rem;line-height:1.5;margin:6px 0 10px;color:#3a4357}
@media (max-width:980px){.ref-is{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.ref-is{grid-template-columns:1fr}}