/* طرح رویا | صفحه‌ی تکی آموزش و نرم‌افزار */
.kb-prog{position:fixed;top:0;right:0;left:0;height:3px;z-index:99999;pointer-events:none}
.kb-prog i{display:block;height:100%;background:linear-gradient(270deg,#fff,#A1A1AA);transform:scaleX(0);transform-origin:right;box-shadow:0 0 12px rgba(255,255,255,.6)}

/* ================= هیرو ================= */
.kb-sh{position:relative;overflow:clip;isolation:isolate;padding:calc(var(--hdr,105px) + 34px) 0 120px}
.kb-sh-bg{position:absolute;inset:-40px;z-index:-4;background-size:cover;background-position:center;filter:blur(40px) saturate(.2) brightness(.35);transform:scale(1.1);opacity:.8}
.kb-sh::after{content:"";position:absolute;inset:0;z-index:-3;background:radial-gradient(90% 70% at 70% 30%,rgba(10,10,11,.25),#0A0A0B 75%)}
.kb-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#71717A;margin-bottom:30px}
.kb-crumb a{color:#A1A1AA;transition:color .3s}
.kb-crumb a:hover{color:#fff}
.kb-crumb i{font-style:normal;opacity:.5}
.kb-sh-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:50px;align-items:center}
.kb .kb-sh h1{margin-top:20px;font-size:clamp(28px,3.6vw,52px);line-height:1.3;font-weight:900;color:#fff;text-wrap:balance}
.kb-sh .kb-lead{max-width:640px}
.kb-facts{list-style:none;margin-top:26px;display:flex;flex-wrap:wrap;gap:8px}
.kb-facts li{display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border-radius:999px;font-size:13px;font-weight:700;color:#D4D4D8;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1)}
.kb-facts svg{width:15px;height:15px}
.kb-facts li:first-child svg{transform:none}
.kb-sh .btn-primary svg,.kb-sh .btn-ghost svg{width:16px;height:16px}
.kb-sh-num{position:relative;display:grid;place-items:center}
.kb-sh-num svg{width:100%;max-width:420px;overflow:visible}
.kb-sh-num text{font:900 250px/1 Vazir,Tahoma,sans-serif;fill:transparent;stroke:rgba(255,255,255,.85);stroke-width:1.4;stroke-dasharray:1400;stroke-dashoffset:1400;animation:kbDraw 3.2s var(--ease) .3s forwards,kbFill 1.4s ease 2.6s forwards}
@keyframes kbDraw{to{stroke-dashoffset:0}}
@keyframes kbFill{to{fill:rgba(255,255,255,.06);stroke:rgba(255,255,255,.35)}}
.kb-sh-num::before{content:"";position:absolute;width:70%;aspect-ratio:1;border-radius:50%;border:1px dashed rgba(255,255,255,.14);animation:kbSpin2 40s linear infinite}
.kb-sh-num::after{content:"";position:absolute;width:44%;aspect-ratio:1;border-radius:50%;background:radial-gradient(closest-side,rgba(255,255,255,.12),transparent);animation:kbGlow2 5s ease-in-out infinite alternate}
@keyframes kbSpin2{to{transform:rotate(360deg)}}
@keyframes kbGlow2{to{transform:scale(1.35);opacity:.6}}

/* نرم‌افزار */
.kb-appid{display:flex;align-items:center;gap:16px}
.kb-appic{position:relative;flex:0 0 84px;height:84px;border-radius:24px;display:grid;place-items:center;isolation:isolate}
.kb-appic i{position:absolute;inset:-3px;z-index:-1;border-radius:27px;background:conic-gradient(from var(--a,0deg),rgba(255,255,255,.05),#fff,rgba(255,255,255,.05) 40%,rgba(255,255,255,.05));animation:kbSpin 4s linear infinite}
.kb-appic img{width:100%;height:100%;object-fit:cover;border-radius:22px;border:3px solid #0A0A0B;background:#18181B}
.kb-appid>span:last-child{display:flex;flex-direction:column;align-items:flex-start;gap:6px}
.kb-appid em{font-style:normal;font-size:13px;font-weight:800;color:#A1A1AA}
.kb-appid b{font-size:13px;font-weight:800;color:#0A0A0B;background:#fff;padding:5px 10px;border-radius:9px}
.kb-btn-dl svg{animation:kbBob 1.4s ease-in-out infinite}
.kb-spec{display:grid;grid-template-columns:1fr 1fr;gap:1px;border-radius:24px;overflow:hidden;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);position:relative;isolation:isolate}
.kb-spec::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(260px circle at var(--mx,50%) var(--my,0),rgba(255,255,255,.08),transparent 60%)}
.kb-spec div{padding:18px 20px;background:rgba(14,14,16,.92);display:flex;flex-direction:column;gap:6px;animation:kbIn .7s var(--ease) both;animation-delay:calc(.4s + var(--i) * .07s)}
@keyframes kbIn{from{opacity:0;transform:translateY(12px)}}
.kb-spec div:last-child:nth-child(odd){grid-column:1/-1}
.kb-spec dt{display:flex;align-items:center;gap:7px;font-size:12px;font-weight:700;color:#71717A}
.kb-spec dt svg{width:15px;height:15px}
.kb-spec dd{margin:0;font-size:15px;font-weight:800;color:#fff;text-align:right}
.kb-spec dd[dir=ltr]{text-align:right}

/* ================= دانلودها ================= */
.kb-dls{position:relative;z-index:2;padding:0 0 100px}
.kb-dl-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:22px;margin-top:-64px;align-items:start}
.kb-dl-box{border-radius:28px;background:#fff;border:1px solid #E4E4E7;box-shadow:0 40px 80px -50px rgba(0,0,0,.45);padding:clamp(16px,2.4vw,28px)}
.kb-dl-head{display:flex;align-items:center;gap:14px;padding-bottom:18px;margin-bottom:10px;border-bottom:1px dashed #E4E4E7}
.kb-dl-head>span{width:48px;height:48px;border-radius:16px;display:grid;place-items:center;background:#0A0A0B;color:#fff;flex:0 0 48px}
.kb-dl-head>span svg{width:22px;height:22px;animation:kbBob 1.6s ease-in-out infinite}
.kb-dl-head b{display:block;font-size:18px;font-weight:900;color:#18181B}
.kb-dl-head small{font-size:12.5px;color:#71717A}
.kb-dl-list{list-style:none;display:flex;flex-direction:column;gap:10px;padding-top:6px}
.kb-dl-list li{animation:kbIn .7s var(--ease) both;animation-delay:calc(.2s + var(--i) * .08s)}
.kb-dl-row{position:relative;display:flex;align-items:center;gap:14px;padding:12px;border-radius:20px;background:#F4F4F5;border:1px solid #E4E4E7;transition:border-color .3s,background .3s,transform .4s var(--ease)}
.kb-dl-row:hover{border-color:#A1A1AA;background:#fff;transform:translateY(-2px)}
.kb-dl-ic{flex:0 0 46px;height:46px;border-radius:14px;display:grid;place-items:center;background:#fff;border:1px solid #E4E4E7;color:#18181B}
.kb-dl-ic svg{width:22px;height:22px}
.kb-dl-t{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.kb-dl-t b{font-size:15px;font-weight:800;color:#18181B}
.kb-dl-t small{font-size:12px;color:#71717A;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.kb-dl-go{position:relative;flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:999px;background:#0A0A0B;color:#fff;font-size:14px;font-weight:800;overflow:hidden;isolation:isolate}
.kb-dl-go i{position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#52525B,#A1A1AA);transform:scaleX(0);transform-origin:right}
.kb-dl-go svg{width:17px;height:17px}
.kb-dl-go em{font-style:normal}
.kb-dl-row:hover .kb-dl-go svg{animation:kbBob .9s ease-in-out infinite}
.kb-dl-row.is-go .kb-dl-go i{transition:transform .8s cubic-bezier(.3,.6,.2,1);transform:scaleX(1)}
.kb-dl-row.is-go .kb-dl-go svg{animation:none}
.kb-pw{margin-top:14px;display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:18px;background:#0A0A0B;color:#fff}
.kb-pw-ic{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(255,255,255,.1);flex:0 0 40px}
.kb-pw-ic svg{width:19px;height:19px}
.kb-pw-t{flex:1;min-width:0;display:flex;flex-direction:column}
.kb-pw-t small{font-size:12px;color:#A1A1AA}
.kb-pw-t code{font-size:17px;font-weight:700;color:#fff;background:none;padding:0;letter-spacing:.04em;text-align:right}
.kb .kb-pw-copy{display:inline-flex;align-items:center;gap:7px;padding:10px 16px;border-radius:999px;background:#fff;color:#0A0A0B;font-size:13px;font-weight:800;transition:transform .3s var(--ease)}
.kb-pw-copy svg{width:15px;height:15px}
.kb .kb-pw-copy:hover{transform:translateY(-2px)}
.kb-dl-note{margin-top:14px;padding:12px 16px;border-radius:14px;background:#F4F4F5;border-right:3px solid #0A0A0B;font-size:14px;line-height:2;color:#3F3F46}
.kb-dl-help{margin-top:14px;display:flex;align-items:center;gap:8px;font-size:13px;color:#71717A;flex-wrap:wrap}
.kb-dl-help svg{width:16px;height:16px}
.kb-dl-help a{color:#18181B;font-weight:800;text-decoration:underline;text-underline-offset:4px}
.kb-dl-side{border-radius:28px;background:#fff;border:1px solid #E4E4E7;padding:24px;box-shadow:0 30px 60px -50px rgba(0,0,0,.4)}
.kb-side-h{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:900;color:#18181B;margin-bottom:14px}
.kb-side-h svg{width:18px;height:18px}
.kb-side-h:not(:first-child){margin-top:26px}
.kb-steps{list-style:none;counter-reset:s;position:relative;display:flex;flex-direction:column;gap:14px}
.kb-steps::before{content:"";position:absolute;right:15px;top:10px;bottom:10px;width:1.5px;background:linear-gradient(#0A0A0B,#E4E4E7)}
.kb-steps li{counter-increment:s;position:relative;padding-right:46px;font-size:14px;line-height:1.95;color:#3F3F46;min-height:32px}
.kb-steps li::before{content:counter(s,persian);position:absolute;right:0;top:0;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:#fff;border:1.5px solid #0A0A0B;color:#0A0A0B;font-weight:900;font-size:13px}
.kb-feats{list-style:none;display:flex;flex-direction:column;gap:8px}
.kb-feats li{display:flex;gap:8px;font-size:14px;line-height:1.9;color:#3F3F46}
.kb-feats svg{width:16px;height:16px;flex:0 0 16px;margin-top:5px}

/* ================= ویدئو ================= */
.kb-watch{position:relative;z-index:2;padding:0 0 100px}
.kb-learn .kb-watch .kb-player{margin-top:-70px}
.kb-soft .kb-watch{padding:100px 0 110px}
.kb-player{max-width:1040px;margin-inline:auto;border-radius:30px;background:#0A0A0B;border:1px solid #27272A;padding:10px;box-shadow:0 60px 110px -60px rgba(0,0,0,.8)}
.kb-ptabs{position:relative;display:flex;gap:6px;padding:4px;margin-bottom:10px;border-radius:22px;background:#18181B;isolation:isolate}
.kb .kb-ptabs button{flex:1;display:flex;align-items:center;justify-content:center;gap:10px;padding:10px 12px;border-radius:18px;color:#A1A1AA;transition:color .4s}
.kb-ptabs button svg{width:24px;height:24px;flex:0 0 24px}
.kb-ptabs button span{display:flex;flex-direction:column;align-items:flex-start;line-height:1.5}
.kb-ptabs button b{font-size:14px;font-weight:800}
.kb-ptabs button small{font-size:11.5px;opacity:.75}
.kb .kb-ptabs button.is-on{color:#0A0A0B}
.kb-ptabs-ind{position:absolute;z-index:-1;top:4px;bottom:4px;border-radius:18px;background:#fff;transition:left .55s var(--ease),width .55s var(--ease);box-shadow:0 8px 24px -10px rgba(255,255,255,.4)}
.kb-screen{position:relative;aspect-ratio:16/9;border-radius:22px;overflow:hidden;background:#000}
.kb-screen>img{width:100%;height:100%;object-fit:cover;transition:transform 8s linear,filter .6s}
.kb-screen:hover>img{transform:scale(1.06)}
.kb-screen-shade{position:absolute;inset:0;background:radial-gradient(60% 60% at 50% 50%,rgba(0,0,0,.15),rgba(0,0,0,.65))}
.kb-screen::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(transparent 50%,rgba(255,255,255,.035) 50%) 0 0/100% 4px;mix-blend-mode:overlay}
.kb .kb-bigplay{position:absolute;left:50%;top:50%;width:96px;height:96px;margin:-48px 0 0 -48px;border-radius:50%;display:grid;place-items:center;background:#fff;color:#0A0A0B;z-index:3;transition:transform .5s var(--ease)}
.kb .kb-bigplay:hover{transform:scale(1.1)}
.kb-bigplay svg{width:30px;height:30px;transform:scaleX(-1);margin-right:-4px}
.kb-bigplay i{position:absolute;inset:0;border-radius:50%;border:1.5px solid #fff;animation:kbRipple 2.4s ease-out infinite}
.kb-bigplay i+i{animation-delay:1.2s}
@keyframes kbRipple{from{transform:scale(1);opacity:.8}to{transform:scale(2);opacity:0}}
.kb-screen-cap{position:absolute;right:24px;left:24px;bottom:20px;z-index:2;display:flex;flex-direction:column;gap:2px;color:#fff;pointer-events:none}
.kb-screen-cap b{font-size:clamp(15px,1.6vw,20px);font-weight:900;text-shadow:0 2px 14px rgba(0,0,0,.7)}
.kb-screen-cap small{font-size:12.5px;color:#D4D4D8}
.kb-screen iframe{position:absolute;inset:0;width:100%;height:100%;border:0;z-index:4;background:#000}
.kb-screen.is-on .kb-bigplay,.kb-screen.is-on .kb-screen-cap{opacity:0;pointer-events:none}

/* ================= متن ================= */
.kb-read{padding:100px 0 110px}
.kb-learn .kb-read{padding-top:40px}
.kb-read-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
.kb-pts{margin-bottom:34px;padding:22px 24px;border-radius:24px;background:#0A0A0B;color:#fff}
.kb-pts b{display:flex;align-items:center;gap:9px;font-size:16px;font-weight:900;margin-bottom:12px}
.kb-pts b svg{width:20px;height:20px}
.kb-pts ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:8px 20px}
.kb-pts li{display:flex;gap:8px;font-size:14px;line-height:1.9;color:#D4D4D8}
.kb-pts li svg{width:16px;height:16px;flex:0 0 16px;margin-top:5px}
.kb-prose{font-size:16.5px;line-height:2.25;color:#3F3F46;overflow-wrap:anywhere}
.kb-prose>*+*{margin-top:18px}
.kb .kb-prose p{margin-top:16px;text-align:justify}
.kb .kb-prose h1,.kb .kb-prose h2,.kb .kb-prose h3,.kb .kb-prose h4{position:relative;margin:46px 0 14px;color:#0A0A0B;font-weight:900;line-height:1.6;scroll-margin-top:calc(var(--hdr,90px) + 20px)}
.kb .kb-prose h1,.kb .kb-prose h2{font-size:clamp(21px,2vw,26px);padding-right:18px}
.kb .kb-prose h1::before,.kb .kb-prose h2::before{content:"";position:absolute;right:0;top:.35em;bottom:.35em;width:5px;border-radius:5px;background:linear-gradient(#0A0A0B,#A1A1AA)}
.kb .kb-prose h3,.kb .kb-prose h4{font-size:clamp(18px,1.6vw,20px)}
.kb .kb-prose>:first-child{margin-top:0}
.kb-prose [style*="font-size"]{font-size:inherit!important}
.kb-prose [style*="color: #000000"],.kb-prose [style*="color:#000"]{color:inherit!important}
.kb-prose strong,.kb-prose b{color:#18181B;font-weight:800}
.kb-prose a{color:#0A0A0B;font-weight:700;text-decoration:underline;text-decoration-color:#A1A1AA;text-underline-offset:5px;transition:text-decoration-color .3s}
.kb-prose a:hover{text-decoration-color:#0A0A0B}
.kb-prose a:has(img){text-decoration:none}
.kb-prose img{display:block;max-width:100%;height:auto;margin:26px auto;border-radius:18px;border:1px solid #E4E4E7;box-shadow:0 30px 60px -40px rgba(0,0,0,.45);cursor:zoom-in;transition:transform .5s var(--ease),box-shadow .5s}
.kb-prose img:hover{transform:translateY(-3px);box-shadow:0 40px 70px -40px rgba(0,0,0,.55)}
.kb .kb-prose ul,.kb .kb-prose ol{margin:16px 0;padding-right:22px}
.kb .kb-prose li{margin:8px 0;padding-right:4px}
.kb-prose li::marker{color:#0A0A0B;font-weight:800}
.kb-prose li p{margin-top:4px!important}
.kb-prose hr{border:0;height:1px;background:linear-gradient(90deg,transparent,#D4D4D8,transparent);margin:40px 0}
.kb-prose table{width:100%!important;border-collapse:separate!important;border-spacing:0;margin:26px 0;border:1px solid #E4E4E7;border-radius:18px;overflow:hidden;font-size:14.5px}
.kb-prose td,.kb-prose th{padding:12px 14px;border:0!important;border-bottom:1px solid #E4E4E7!important;vertical-align:middle}
.kb-prose tr:last-child td{border-bottom:0!important}
.kb-prose tr:nth-child(odd) td{background:#FAFAFA}
.kb-prose td img{margin:6px auto;box-shadow:none}
.kb-prose blockquote{margin:26px 0;padding:18px 22px;border-radius:18px;background:#F4F4F5;border-right:4px solid #0A0A0B;color:#27272A}
.kb-prose pre,.kb-prose code{direction:ltr;text-align:left;font-family:ui-monospace,Consolas,monospace!important}
.kb-prose pre{padding:18px 20px;border-radius:18px;background:#0A0A0B;color:#E4E4E7;overflow:auto;font-size:14px;line-height:1.8}
.kb-prose :not(pre)>code{padding:2px 8px;border-radius:8px;background:#F4F4F5;border:1px solid #E4E4E7;font-size:.88em;color:#18181B}
.kb-prose [style*="direction: ltr"]{text-align:left!important}
.kb-prose iframe{max-width:100%;border-radius:18px}
.kb-prose .aligncenter{margin-inline:auto}

.kb-aside{position:sticky;top:calc(var(--hdr,90px) + 24px)}
.kb-aside-in{display:flex;flex-direction:column;gap:16px}
.kb-toc,.kb-files,.kb-share{border-radius:22px;background:#F4F4F5;border:1px solid #E4E4E7;padding:18px}
.kb-toc[hidden]{display:none}
.kb-toc b,.kb-files b,.kb-share b{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:900;color:#18181B;margin-bottom:10px}
.kb-toc b svg,.kb-files b svg,.kb-share b svg{width:17px;height:17px}
.kb-toc ol{list-style:none;display:flex;flex-direction:column;gap:2px;max-height:52vh;overflow:auto;scrollbar-width:thin;position:relative}
.kb-toc a{position:relative;display:block;padding:7px 14px 7px 8px;border-radius:10px;font-size:13px;line-height:1.8;color:#52525B;transition:color .3s,background .3s}
.kb-toc a::before{content:"";position:absolute;right:4px;top:50%;width:4px;height:4px;margin-top:-2px;border-radius:50%;background:#A1A1AA;transition:transform .3s,background .3s}
.kb-toc a.lv3{padding-right:26px;font-size:12.5px}
.kb-toc a.lv3::before{right:16px}
.kb-toc a:hover{color:#0A0A0B;background:#fff}
.kb-toc a.is-on{color:#0A0A0B;font-weight:800;background:#fff}
.kb-toc a.is-on::before{background:#0A0A0B;transform:scale(1.8)}
.kb-files a{display:flex;align-items:center;gap:8px;padding:9px 12px;margin-top:6px;border-radius:12px;background:#fff;border:1px solid #E4E4E7;font-size:13px;font-weight:700;color:#18181B;transition:border-color .3s}
.kb-files a:hover{border-color:#0A0A0B}
.kb-files a svg{width:16px;height:16px}
.kb-share div{display:flex;gap:8px}
.kb .kb-share div>*{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:#fff;border:1px solid #E4E4E7;color:#18181B;transition:background .3s,color .3s,transform .3s var(--ease)}
.kb-share div svg{width:19px;height:19px}
.kb .kb-share div>*:hover{background:#0A0A0B;color:#fff;transform:translateY(-3px)}

/* ================= قبلی / بعدی ================= */
.kb-pn{padding:70px 0}
.kb-pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.kb-pn-i{position:relative;display:flex;align-items:center;gap:16px;padding:14px;border-radius:24px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);overflow:hidden;isolation:isolate;transition:border-color .4s,background .4s}
.kb-pn-i::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(300px circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.1),transparent 60%);opacity:0;transition:opacity .4s}
.kb-pn-i:hover{border-color:rgba(255,255,255,.28)}
.kb-pn-i:hover::before{opacity:1}
.kb-pn-i img{flex:0 0 120px;height:74px;object-fit:cover;border-radius:14px}
.kb-pn-t{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}
.kb-pn-t small{font-size:12px;font-weight:700;color:#A1A1AA}
.kb-pn-t b{font-size:15px;font-weight:800;color:#fff;line-height:1.7}
.kb-pn-ar{width:44px;height:44px;flex:0 0 44px;border-radius:50%;display:grid;place-items:center;background:#fff;color:#0A0A0B;transition:transform .5s var(--ease)}
.kb-pn-ar svg{width:18px;height:18px}
.kb-pn-next:hover .kb-pn-ar{transform:translateX(-5px)}
.kb-pn-prev{flex-direction:row-reverse}
.kb-pn-prev:hover .kb-pn-ar{transform:translateX(5px)}

/* ================= مرتبط و دیدگاه ================= */
.kb-rel{padding:100px 0}
.kb-head-row{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
.kb-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:800;color:#18181B;padding:10px 18px;border-radius:999px;border:1.5px solid #D4D4D8;transition:border-color .3s,background .3s,color .3s}
.kb-more svg{width:16px;height:16px}
.kb-more:hover{background:#0A0A0B;color:#fff;border-color:#0A0A0B}
.kb-grid-rel .kb-card{min-height:100%}
.kb-talk{padding:100px 0 110px}
.kb .kb-talk-in{background:transparent;overflow:visible}
.kb-talk .sp-talk-box{max-width:900px}

/* لایت‌باکس */
.kb-lb{position:fixed;inset:0;z-index:100000;display:grid;place-items:center;padding:30px;background:rgba(10,10,11,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);cursor:zoom-out;animation:kbFade .3s ease}
.kb-lb[hidden]{display:none}
.kb-lb img{max-width:100%;max-height:100%;border-radius:14px;box-shadow:0 40px 100px rgba(0,0,0,.6);animation:kbZoom .45s var(--ease)}
.kb .kb-lb-x{position:absolute;top:18px;left:18px;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:#fff;color:#0A0A0B}
.kb-lb-x svg{width:20px;height:20px}
@keyframes kbFade{from{opacity:0}}
@keyframes kbZoom{from{transform:scale(.92);opacity:0}}

@media (min-width:981px){
	.kb-sh{padding-top:calc(max(var(--hdr,105px),105px) + 30px)}
}

/* ================= واکنش‌گرایی ================= */
@media (max-width:1100px){
	.kb-read-grid{grid-template-columns:minmax(0,1fr) 260px;gap:36px}
}
@media (max-width:980px){
	.kb-sh{padding:calc(var(--hdr,90px) + 24px) 0 100px}
	.kb-sh-grid{grid-template-columns:minmax(0,1fr);gap:34px}
	.kb-sh-num{display:none}
	.kb-dl-grid{grid-template-columns:1fr}
	.kb-read-grid{display:flex;flex-direction:column;gap:22px}
	.kb-aside,.kb-aside-in{display:contents}
	.kb-toc{order:-1}
	.kb-files,.kb-share{order:2}
	.kb-toc ol{max-height:none}
	.kb-grid-rel{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
	.kb .kb-sh h1{font-size:clamp(24px,7vw,32px)}
	.kb-crumb{margin-bottom:18px;font-size:12.5px}
	.kb-facts li{padding:7px 12px;font-size:12.5px}
	.kb-appic{flex-basis:68px;height:68px;border-radius:20px}
	.kb-appic img{border-radius:18px}
	.kb-spec div{padding:14px 16px}
	.kb-spec dd{font-size:14px}
	.kb-dls{padding-bottom:70px}
	.kb-dl-grid{margin-top:-50px;gap:14px}
	.kb-dl-box,.kb-dl-side{border-radius:22px}
	.kb-dl-row{flex-wrap:wrap;gap:10px;padding:10px}
	.kb-dl-ic{flex-basis:40px;height:40px}
	.kb-dl-t{flex-basis:calc(100% - 60px)}
	.kb-dl-go{flex:1;justify-content:center}
	.kb-pw{flex-wrap:wrap}
	.kb .kb-pw-copy{flex:1;justify-content:center}
	.kb-learn .kb-watch .kb-player{margin-top:-60px}
	.kb-soft .kb-watch{padding:80px 0}
	.kb-player{border-radius:22px;padding:6px}
	.kb-ptabs{border-radius:18px}
	.kb .kb-ptabs button{padding:8px 6px;gap:6px}
	.kb-ptabs button svg{width:20px;height:20px;flex-basis:20px}
	.kb-ptabs button b{font-size:12.5px}
	.kb-ptabs button small{display:none}
	.kb-screen{border-radius:16px}
	.kb .kb-bigplay{width:70px;height:70px;margin:-35px 0 0 -35px}
	.kb-bigplay svg{width:24px;height:24px}
	.kb-screen-cap{right:14px;left:14px;bottom:12px}
	.kb-screen-cap b{font-size:14px}
	.kb-read{padding:70px 0 80px}
	.kb-pts{padding:18px}
	.kb-pts ul{grid-template-columns:1fr}
	.kb-prose{font-size:15.5px;line-height:2.15}
	.kb .kb-prose p{text-align:right}
	.kb-prose img{border-radius:14px;margin:18px auto}
	.kb-prose table{display:block;overflow-x:auto;font-size:13px}
	.kb-pn{padding:50px 0}
	.kb-pn-grid{grid-template-columns:1fr;gap:12px}
	.kb-pn-i img{flex-basis:88px;height:60px}
	.kb-pn-t b{font-size:14px}
	.kb-rel,.kb-talk{padding:70px 0 80px}
	.kb-grid-rel{grid-template-columns:1fr}
}