/* صفحه‌های سپرده — هم‌خوان با مقالات/اپ */
.dp-main{max-width:720px;padding-bottom:40px}
.dp-crumb{font-size:12px;color:var(--secondary,#64748b);margin:14px 0 4px}.dp-crumb a{color:var(--primary);text-decoration:none}
.dp-hero{text-align:center;padding:14px 0 6px}
.dp-ic{width:64px;height:64px;margin:0 auto 8px;display:grid;place-items:center;font-size:30px;border-radius:20px;background:linear-gradient(145deg,var(--c),color-mix(in srgb,var(--c) 60%,#312e81));box-shadow:0 14px 24px -14px var(--c)}
.dp-hero h1{font-size:25px;line-height:1.5;margin:6px 0}
.dp-hero p{font-size:13.5px;line-height:2;color:var(--secondary,#64748b);max-width:560px;margin:0 auto}
.dp-card{margin-top:16px;padding:16px;border-radius:20px;background:var(--surface,#fff);border:1px solid color-mix(in srgb,var(--c) 25%,var(--border,#e2e8f0));box-shadow:0 1px 2px rgba(15,23,42,.06),0 12px 20px -14px rgba(15,23,42,.35)}
.dp-card label{display:block;font-size:12px;font-weight:800;margin-bottom:10px;color:var(--text,#0f172a)}
.dp-card input{display:block;width:100%;margin-top:5px;padding:11px 12px;border-radius:12px;border:1px solid var(--border,#e2e8f0);background:var(--card,#f8fafc);font:inherit;font-size:14px;color:inherit;text-align:right}
.dp-card input:focus{outline:2px solid var(--c);outline-offset:1px}
.dp-2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.dp-toggle{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:12px}
.dp-toggle button{padding:10px;border-radius:12px;border:1px solid var(--border,#e2e8f0);background:var(--card,#f8fafc);font:inherit;font-size:12.5px;font-weight:800;cursor:pointer;color:inherit}
.dp-toggle button.on{color:#fff;border-color:transparent;background:linear-gradient(135deg,#4f46e5,#7c3aed)}
.dp-sch{padding:12px;border-radius:14px;margin-bottom:10px;border:1px solid var(--border,#e2e8f0)}.dp-sch>b{display:block;margin-bottom:8px;font-size:13px}
.dp-sch.a{background:rgba(99,102,241,.06)}.dp-sch.b{background:rgba(245,158,11,.07)}
.dp-go{width:100%;margin-top:4px;padding:13px;border:0;border-radius:14px;font:inherit;font-size:15px;font-weight:900;color:#fff;cursor:pointer;background:linear-gradient(135deg,#4f46e5,#7c3aed);box-shadow:0 12px 20px -12px rgba(79,70,229,.8)}
.dp-go:active{transform:scale(.98)}
.dp-out{margin-top:14px;padding:14px;border-radius:16px;border-right:4px solid var(--c);background:color-mix(in srgb,var(--c) 8%,var(--surface,#fff))}
.dp-out-t{font-weight:900;font-size:14px;margin-bottom:8px;color:var(--c)}
.dp-row{display:flex;justify-content:space-between;gap:10px;padding:7px 0;font-size:13px;border-top:1px dashed var(--border,#e2e8f0)}.dp-row:first-of-type{border-top:0}
.dp-row .strong{font-weight:900;color:var(--c)}
.dp-err{margin-top:12px;color:#dc2626;font-size:13px;font-weight:700}
.dp-app{display:block;margin-top:12px;padding:13px 14px;border-radius:16px;text-align:center;text-decoration:none;font-weight:800;font-size:13px;color:var(--primary);background:color-mix(in srgb,var(--primary,#6366f1) 9%,var(--surface,#fff));border:1px solid color-mix(in srgb,var(--primary,#6366f1) 25%,var(--border,#e2e8f0))}
.dp-sec{margin-top:26px}.dp-sec h2{font-size:18px;margin:0 0 10px}.dp-sec p{font-size:14px;line-height:2.05;margin:0 0 10px}
.dp-formula{list-style:none;margin:0;padding:0;display:grid;gap:8px}.dp-formula li{padding:12px 14px;border-radius:14px;background:var(--card,#f1f5f9);border:1px solid var(--border,#e2e8f0);font-size:13px;line-height:1.9;font-weight:700}
.dp-example{padding:14px;border-radius:16px;font-size:13.5px;line-height:2.05;background:color-mix(in srgb,var(--c) 8%,var(--surface,#fff));border:1px solid color-mix(in srgb,var(--c) 22%,var(--border,#e2e8f0))}
.dp-page details{border:1px solid var(--border,#e2e8f0);border-radius:14px;margin-bottom:8px;background:var(--surface,#fff);overflow:hidden}
.dp-page summary{cursor:pointer;padding:13px 14px;font-weight:800;font-size:13.5px;line-height:1.8}
.dp-page details p{padding:0 14px 12px;margin:0;font-size:13px}
.dp-rels{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.dp-rel{display:flex;flex-direction:column;gap:3px;padding:13px;border-radius:16px;text-decoration:none;color:inherit;border:1px solid color-mix(in srgb,var(--c) 22%,var(--border,#e2e8f0));background:linear-gradient(165deg,color-mix(in srgb,var(--c) 9%,var(--surface,#fff)),var(--surface,#fff) 70%)}
.dp-rel span{font-size:24px}.dp-rel b{font-size:13px;line-height:1.7}.dp-rel i{font-style:normal;font-size:11.5px;color:var(--secondary,#64748b);line-height:1.7}
.dp-rel.big{padding:16px}
.dp-disc{margin-top:24px;font-size:11.5px;color:var(--secondary,#64748b);text-align:center;line-height:1.9}
@media (max-width:560px){.dp-hero h1{font-size:21px}.dp-2{grid-template-columns:1fr 1fr;gap:8px}.dp-rels{grid-template-columns:1fr 1fr}}
.dp-arts{display:grid;gap:8px}.dp-arts a{padding:12px 14px;border-radius:14px;background:var(--surface,#fff);border:1px solid var(--border,#e2e8f0);text-decoration:none;color:inherit;font-weight:700;font-size:13px;line-height:1.8}.dp-arts a:active{transform:scale(.99)}
.dp-card select{display:block;width:100%;margin-top:5px;padding:11px 12px;border-radius:12px;border:1px solid var(--border,#e2e8f0);background:var(--card,#f8fafc);font:inherit;font-size:14px;color:inherit}.dp-hint{display:block;margin:-4px 0 10px;font-size:11.5px;color:var(--secondary,#64748b)}.dp-br{margin-top:4px}