.sr-clean{--c-ink:#0f172a;--c-muted:#64748b;--c-line:#e2e8f0;--c-bg:#fff;--c-soft:#f8fafc;--c-brand:#2563eb;--c-radius:14px;color:var(--c-ink);font-family:Tahoma,"Vazirmatn",system-ui,sans-serif;line-height:1.8}.sr-clean *{box-sizing:border-box}.sr-clean a{color:var(--c-brand)}.sr-clean__progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:99999;background:var(--c-brand)}.sr-clean__hero{padding:20px 16px 8px;max-width:1100px;margin:0 auto}.sr-clean__bc{display:flex;flex-wrap:wrap;gap:6px;font-size:12px;color:var(--c-muted);margin-bottom:12px}.sr-clean__bc a{color:var(--c-muted);text-decoration:none}.sr-clean__title{margin:0 0 10px;font-size:clamp(1.3rem,2.6vw,1.85rem);line-height:1.4;font-weight:800}.sr-clean__meta-row{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;font-size:12.5px;color:var(--c-muted);margin-bottom:8px}.sr-clean__meta-row .dot{opacity:.4}.sr-clean__chips{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}.sr-clean__chip{display:inline-block;padding:3px 10px;border-radius:999px;background:#eff6ff;color:#1d4ed8;font-size:11px;font-weight:700;text-decoration:none}.sr-clean__cover{max-width:720px;margin:12px auto 0;padding:0 16px}.sr-clean__cover img{width:100%;max-height:380px;object-fit:cover;display:block;border-radius:var(--c-radius);box-shadow:0 8px 28px rgb(15 23 42 / .08)}@media(max-width:600px){.sr-clean__cover img{max-height:220px}}.sr-clean__wrap{max-width:1100px;margin:0 auto;padding:16px 16px 48px;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}@media(max-width:960px){.sr-clean__wrap{grid-template-columns:1fr}.sr-clean__aside{order:-1}}.sr-clean__lead{font-size:1.05rem;color:#334155;background:var(--c-soft);border-right:3px solid var(--c-brand);padding:12px 14px;border-radius:0 12px 12px 0;margin:0 0 18px}.sr-clean__body{font-size:1.02rem;line-height:1.95;color:#1e293b;overflow-wrap:anywhere}.sr-clean__body h2{font-size:1.25rem;margin:1.7em 0 .55em;padding-top:8px;border-top:1px solid #f1f5f9;scroll-margin-top:80px}.sr-clean__body h3{font-size:1.08rem;margin:1.3em 0 .45em;scroll-margin-top:80px}.sr-clean__body p{margin:0 0 1em}.sr-clean__body img,.sr-clean__body video,.sr-clean__body iframe{max-width:100%;height:auto;border-radius:12px}.sr-clean__body table{width:100%;border-collapse:collapse;margin:1em 0;font-size:.92rem}.sr-clean__body th,.sr-clean__body td{border:1px solid var(--c-line);padding:8px 10px}.sr-clean__body th{background:var(--c-soft)}.sr-clean__body blockquote{margin:1em 0;padding:10px 14px;border-right:3px solid var(--c-brand);background:var(--c-soft);border-radius:0 10px 10px 0}.sr-clean__body hr{border:0;border-top:1px solid var(--c-line);margin:1.5em 0}.sr-clean__player{margin:0 0 16px;border-radius:var(--c-radius);overflow:hidden;background:#0b1220;border:1px solid #1e293b;box-shadow:0 12px 36px rgb(15 23 42 / .15)}.sr-clean__player-frame{position:relative;width:100%;padding-top:56.25%;background:#000}.sr-clean__player-frame iframe,.sr-clean__player-frame video,.sr-clean__player-frame>*{position:absolute;inset:0;width:100%;height:100%;border:0}.sr-clean__player-fallback{padding:28px 16px;text-align:center;color:#e2e8f0}.sr-clean__toc-box{background:var(--c-soft);border:1px solid var(--c-line);border-radius:var(--c-radius);padding:12px 14px;margin:0 0 18px}.sr-clean__toc-box strong{display:block;font-size:13px;margin-bottom:8px}.sr-clean__toc{list-style:none;margin:0;padding:0}.sr-clean__toc a{display:block;padding:5px 0;font-size:13px;color:#334155;text-decoration:none;border-bottom:1px dashed #e2e8f0}.sr-clean__toc a:hover,.sr-clean__toc a.is-active{color:var(--c-brand);font-weight:700}.sr-clean__toc .lv3{padding-right:12px;font-size:12px}.sr-clean__tools{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 4px}.sr-clean__tool{padding:7px 11px;border-radius:10px;border:1px solid var(--c-line);background:#fff;font:700 12px Tahoma;cursor:pointer;color:var(--c-ink)}.sr-clean__tool:hover{border-color:#bfdbfe;color:var(--c-brand)}.sr-clean__share{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:18px 0;padding:12px;background:var(--c-soft);border:1px solid var(--c-line);border-radius:var(--c-radius)}.sr-clean__share a,.sr-clean__share button{padding:7px 11px;border-radius:10px;border:1px solid var(--c-line);background:#fff;font:700 12px Tahoma;text-decoration:none;color:var(--c-ink);cursor:pointer}.sr-clean__tags{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0;font-size:12px}.sr-clean__tags a{padding:4px 10px;border-radius:999px;background:var(--c-soft);border:1px solid var(--c-line);text-decoration:none;color:#334155}.sr-clean__author{display:flex;gap:12px;padding:14px;border:1px solid var(--c-line);border-radius:var(--c-radius);margin:18px 0;background:#fff}.sr-clean__author img{width:56px;height:56px;border-radius:50%}.sr-clean__author strong{display:block;font-size:14px}.sr-clean__author p{margin:4px 0 0;font-size:12px;color:var(--c-muted)}.sr-clean__nav{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:16px 0}@media(max-width:600px){.sr-clean__nav{grid-template-columns:1fr}}.sr-clean__nav a{display:block;padding:12px;border:1px solid var(--c-line);border-radius:12px;text-decoration:none;color:var(--c-ink);background:#fff}.sr-clean__nav small{display:block;font-size:11px;color:var(--c-muted)}.sr-clean__related{margin:22px 0}.sr-clean__related h2{margin:0 0 10px;font-size:1.1rem}.sr-clean__related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}@media(max-width:800px){.sr-clean__related-grid{grid-template-columns:1fr}}.sr-clean__card{display:flex;flex-direction:column;border:1px solid var(--c-line);border-radius:12px;overflow:hidden;text-decoration:none;color:var(--c-ink);background:#fff}.sr-clean__card img{width:100%;height:110px;object-fit:cover;background:var(--c-soft)}.sr-clean__card strong{padding:8px 10px 12px;font-size:12.5px;line-height:1.45}.sr-clean__aside-inner{position:sticky;top:76px;display:flex;flex-direction:column;gap:12px}.sr-clean__box{background:#fff;border:1px solid var(--c-line);border-radius:var(--c-radius);padding:14px;box-shadow:0 4px 16px rgb(15 23 42 / .04)}.sr-clean__box h3{margin:0 0 8px;font-size:13.5px;font-weight:800}.sr-clean__cta{display:inline-flex;margin-top:8px;padding:10px 14px;border-radius:11px;background:var(--c-brand);color:#fff!important;text-decoration:none;font:700 13px Tahoma}.sr-clean__playlist{list-style:none;margin:0;padding:0;max-height:360px;overflow:auto}.sr-clean__playlist a{display:block;padding:8px 0;font-size:12.5px;color:#334155;text-decoration:none;border-bottom:1px solid #f1f5f9}.sr-clean__playlist li.is-current a{color:var(--c-brand);font-weight:800}.sr-clean__stat{display:flex;justify-content:space-between;font-size:12px;padding:6px 0;border-bottom:1px solid #f1f5f9;color:#475569}.sr-clean__stat b{color:var(--c-ink)}.sr-clean__comments{margin-top:24px;padding-top:16px;border-top:1px solid var(--c-line)}body.single #sr-mobile-nav,body.single-dsr_lesson #sr-mobile-nav,body.single #sr-search-sheet,body.single-dsr_lesson #sr-search-sheet,body.single .sr-auto-toc,body.single-dsr_lesson .sr-auto-toc{display:none!important}.sr-comments-wrap{margin:2rem 0 2.5rem;max-width:100%}.sr-comments-wrap .sr-comments-area,.sr-comments-wrap .comments-area{background:#fff;border:1px solid #e2e8f0;border-radius:20px;padding:1.35rem 1.25rem;box-shadow:0 10px 32px rgb(15 23 42 / .05)}.sr-comments-wrap .comments-title,.sr-comments-wrap .comment-reply-title{font-size:1.15rem;font-weight:800;margin:0 0 1rem;color:#0f172a}.sr-comments-wrap .comment-list{list-style:none;margin:0;padding:0}.sr-comments-wrap .comment{padding:1rem 0;border-bottom:1px solid #f1f5f9}.sr-comments-wrap .comment:last-child{border-bottom:0}.sr-comments-wrap .comment-body{display:grid;grid-template-columns:48px 1fr;gap:12px}.sr-comments-wrap .avatar{border-radius:50%;width:48px;height:48px}.sr-comments-wrap .comment-author{font-weight:800;color:#0f172a}.sr-comments-wrap .comment-author a{color:inherit;text-decoration:none}.sr-comments-wrap .comment-meta{font-size:12px;color:#64748b;margin:.2rem 0 .45rem}.sr-comments-wrap .comment-content{line-height:1.85;color:#334155;font-size:.95rem}.sr-comments-wrap .reply{margin-top:6px}.sr-comments-wrap .comment-reply-link{display:inline-flex;padding:5px 10px;border-radius:999px;border:1px solid #e2e8f0;font-size:12px;font-weight:700;text-decoration:none;color:#334155;background:#f8fafc}.sr-comments-wrap .children{list-style:none;margin:.5rem 0 0;padding:0 .75rem 0 0;border-right:2px solid #e2e8f0}.sr-comments-wrap .sr-comment-stars{color:#f59e0b;letter-spacing:2px;margin-bottom:.35rem;font-size:14px}.sr-comments-wrap .comment-form{margin-top:1.25rem;padding-top:1rem;border-top:1px solid #f1f5f9}.sr-comments-wrap .comment-form label{display:block;font-weight:700;font-size:13px;margin:10px 0 6px}.sr-comments-wrap .comment-form input[type="text"],.sr-comments-wrap .comment-form input[type="email"],.sr-comments-wrap .comment-form input[type="url"],.sr-comments-wrap .comment-form textarea{width:100%;max-width:100%;padding:11px 12px;border:1px solid #e2e8f0;border-radius:12px;background:#f8fafc;font-family:inherit;font-size:14px;transition:border .15s,box-shadow .15s}.sr-comments-wrap .comment-form textarea{min-height:120px;resize:vertical}.sr-comments-wrap .comment-form input:focus,.sr-comments-wrap .comment-form textarea:focus{outline:0;border-color:#93c5fd;background:#fff;box-shadow:0 0 0 4px rgb(37 99 235 / .12)}.sr-comments-wrap .form-submit{margin-top:12px}.sr-comments-wrap .sr-btn,.sr-comments-wrap .submit,.sr-comments-wrap input[type="submit"]{display:inline-flex;align-items:center;justify-content:center;padding:11px 18px;border:0;border-radius:12px;background:#2563eb;color:#fff!important;font:700 13px Tahoma;cursor:pointer}.sr-comments-wrap .sr-btn:hover,.sr-comments-wrap .submit:hover{filter:brightness(1.05)}.sr-comments-wrap .sr-rating-field select{padding:10px 12px;border-radius:12px;border:1px solid #e2e8f0;font-family:inherit;background:#fff}.sr-comments-wrap .no-comments{color:#64748b;font-size:13px}@media(max-width:600px){.sr-comments-wrap .comments-area{padding:1rem;border-radius:16px}.sr-comments-wrap .comment-body{grid-template-columns:40px 1fr;gap:10px}}