@font-face{font-family:Vazirmatn;src:url('/assets/vazirmatn-1.woff2') format('woff2');font-weight:400;font-display:swap}@font-face{font-family:Vazirmatn;src:url('/assets/vazirmatn-3.woff2') format('woff2');font-weight:700;font-display:swap}
:root{--bg:#030713;--surface:#0a1222;--line:#1c3041;--text:#edf4ff;--muted:#afc0d5;--green:#48f3c5;--blue:#64d4fa;--violet:#a995ff;--gradient:linear-gradient(115deg,#48f3c5,#64d4fa 55%,#a995ff);color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--bg);color:var(--text);font:400 16px/2.05 Vazirmatn,Tahoma,Arial,sans-serif;-webkit-text-size-adjust:100%;overflow-wrap:break-word}body:before{content:"";position:absolute;inset:0 0 auto;height:650px;pointer-events:none;z-index:-1;background:radial-gradient(ellipse at 85% 5%,#16373e70,transparent 52%),radial-gradient(ellipse at 15% 20%,#352b5e50,transparent 50%)}a{color:inherit;text-decoration:none}a,button,input,summary{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px}img,svg{max-width:100%}img{display:block;height:auto}button,input{font:inherit}button{cursor:pointer}b,strong,h1,h2,h3{font-weight:700}h1,h2,h3,p,ul,ol,figure{margin:0}p+p{margin-top:16px}.wrap{max-width:1180px;width:calc(100% - 48px);margin-inline:auto}.skip{position:fixed;top:-100px;right:20px;background:var(--green);color:#05221b;padding:10px 20px;border-radius:12px;z-index:100}.skip:focus{top:15px}.site-head{position:sticky;top:0;z-index:20;border-bottom:1px solid #1c3041c0;background:#030713ee;backdrop-filter:blur(18px)}.head-in{min-height:86px;display:flex;gap:28px;align-items:center;justify-content:space-between}.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}.brand svg{width:42px;height:42px}.brand b{display:block;font-size:21px;line-height:1.5}.brand small{display:block;direction:ltr;color:var(--muted);font:11px/1.4 Arial,sans-serif;letter-spacing:2.4px}.head-nav{display:flex;gap:25px;align-items:center;color:var(--muted);font-size:14px}.head-nav a:hover,.foot-links a:hover{color:var(--green)}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:10px 20px;border:0;border-radius:12px;font-size:14px;font-weight:700;background:var(--gradient);color:#051c20;line-height:1.7;text-align:center}.button.ghost{background:transparent;border:1px solid var(--line);color:var(--text)}.button svg{width:18px;height:18px;flex-shrink:0}.head-cta{white-space:nowrap}.crumb{display:flex;flex-wrap:wrap;gap:9px;align-items:center;font-size:12px;color:var(--muted);padding-block:24px 12px}.crumb span[aria-hidden]{color:#5b7485}.crumb a:hover{color:var(--green)}.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--green);font-size:12px;font-weight:700;letter-spacing:.3px}.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 14px #48f3c560}.page-hero{padding-block:28px 48px;border-bottom:1px solid var(--line)}.page-hero h1{max-width:910px;font-size:clamp(29px,4vw,47px);line-height:1.65;margin-block:14px 18px;letter-spacing:-.6px}.page-hero .intro{max-width:820px;color:var(--muted);font-size:17px;line-height:2.1}.meta{display:flex;flex-wrap:wrap;gap:9px 20px;margin-top:24px;color:var(--muted);font-size:12px}.meta .dot{color:#516c80}.page-layout{display:grid;grid-template-columns:minmax(0,1fr) 248px;gap:60px;align-items:start;padding-block:42px 80px}.article{min-width:0;max-width:800px}.article section{padding-block:20px 15px;scroll-margin-top:108px}.article h2{font-size:clamp(22px,2.7vw,29px);line-height:1.8;margin-bottom:18px;letter-spacing:-.4px}.article h3{font-size:19px;margin-block:23px 10px;line-height:1.9}.article p,.article li{color:#c9d6e7}.article p a:not(.button),.article li a,.source-links a{color:var(--blue);text-decoration:underline;text-underline-offset:5px}.article ul,.article ol{padding-inline-start:25px;margin-block:14px}.article li{padding-inline-start:5px;margin-bottom:10px}.article code{display:inline-block;direction:ltr;unicode-bidi:isolate;font:13px/1.8 ui-monospace,monospace;border:1px solid #294457;background:#102431;padding:1px 7px;border-radius:6px;max-width:100%;overflow-wrap:anywhere}.lead-box{border:1px solid #305947;background:linear-gradient(120deg,#12352985,#10223755);border-radius:18px;padding:25px;margin-bottom:22px}.lead-box p{color:#dceee8}.lead-box .label{color:var(--green);display:block;font-size:12px;font-weight:700;margin-bottom:10px}.notice{padding:20px 22px;border-inline-start:3px solid var(--violet);border-radius:10px;background:#a995ff0b;margin-block:20px;color:#c9d6e7}.notice strong{color:var(--text)}.sidebar{position:sticky;top:112px;min-width:0}.toc{border:1px solid var(--line);border-radius:18px;padding:22px;background:#0a122280}.toc h2{font-size:14px;margin-bottom:15px}.toc ol{margin:0;padding-inline-start:18px}.toc li{color:#839bb2;font-size:12px;padding-block:5px}.toc a{color:var(--muted)}.toc a:hover,.toc a.active{color:var(--green)}.side-note{padding:20px 4px;font-size:12px;color:var(--muted)}.side-note .button{width:100%;margin-top:14px;font-size:12px}.table-wrap{overflow-x:auto;max-width:100%;border:1px solid var(--line);border-radius:15px;margin-block:22px;scrollbar-width:thin}.table-wrap:focus-visible{outline:2px solid var(--blue)}table{width:100%;border-collapse:collapse;font-size:13px;min-width:500px;text-align:right}caption{padding:13px 16px;text-align:right;font-size:12px;color:var(--muted);caption-side:bottom}th{background:#102431;color:#e2f2ff;font-size:12px}th,td{padding:15px 17px;border-bottom:1px solid var(--line);vertical-align:top}td{color:#c9d6e7}tr:last-child td{border-bottom:0}td:first-child{color:var(--text)}.steps-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-block:23px}.mini-card{padding:20px;border:1px solid var(--line);border-radius:15px;background:#0a1222}.mini-card .num{display:block;color:var(--green);font:13px/1.5 ui-monospace,monospace;margin-bottom:12px}.mini-card b{font-size:15px}.mini-card p{font-size:12px;margin-top:8px}.checklist{list-style:none!important;padding:0!important}.checklist li{padding:14px 18px 14px 12px;border:1px solid var(--line);border-radius:12px;background:#0a1222;margin-block:9px}.checklist li:before{content:"✓";color:var(--green);font-weight:700;margin-inline-end:10px}.figures{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-block:25px}.shot{min-width:0;margin-block:20px}.shot img{margin-inline:auto;border:1px solid #354b5b;border-radius:14px;max-height:640px;width:auto;max-width:100%;background:#f2f2f2}.shot figcaption{font-size:11px;line-height:1.9;color:var(--muted);margin-top:12px;text-align:center}.figures .shot{margin:0}.figures .shot img{max-height:520px;object-fit:contain}.flow{display:flex;align-items:center;gap:10px;margin-block:26px;flex-wrap:wrap}.flow span{flex:1;min-width:135px;background:#0d1d2b;border:1px solid #2d4554;border-radius:13px;padding:13px;text-align:center;font-size:12px;color:var(--text)}.flow i{color:var(--green);font-style:normal}.calc{border:1px solid #305947;background:#0a1820;border-radius:20px;padding:25px;margin-block:25px}.calc legend{padding:0;color:var(--text);font-size:19px;font-weight:700}.calc fieldset{margin:0;padding:0;border:0;min-width:0}.calc .hint{font-size:12px;color:var(--muted);margin-block:12px 20px}.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.field label{display:block;font-size:12px;color:#c9d6e7;margin-bottom:7px}.field input{width:100%;min-width:0;height:48px;border:1px solid #365365;border-radius:10px;background:#040e19;color:var(--text);padding:10px 12px;text-align:right;direction:ltr;font-size:15px}.calc-result{border-top:1px solid #305947;padding-top:20px;margin-top:22px;display:grid;gap:10px}.calc-result p{display:flex;justify-content:space-between;gap:15px;font-size:13px}.calc-result output{color:var(--green);font-weight:700;text-align:left;direction:ltr;unicode-bidi:isolate}.calc #calc-note{display:block;font-size:12px;color:var(--muted);margin-top:15px}.calc [aria-invalid=true]{border-color:#f6abaf}.faq-item{border:1px solid var(--line);border-radius:13px;margin-block:12px;padding:17px 20px;background:#0a122260}.faq-item summary{cursor:pointer;font-weight:700;font-size:14px}.faq-item p{font-size:14px;margin-top:14px}.template{white-space:pre-wrap;border:1px dashed #456475;border-radius:15px;background:#071521;padding:20px;font:13px/2 Vazirmatn,Tahoma,sans-serif;color:#cfdeec;overflow-wrap:anywhere}.copy-row{display:flex;align-items:center;gap:15px;margin-block:12px}.copy-status{font-size:12px;color:var(--green)}.related{border-top:1px solid var(--line);margin-top:35px;padding-top:28px}.related h2{font-size:19px}.related-links{display:grid;gap:12px;margin-top:15px}.related-links a{display:flex;justify-content:space-between;gap:15px;padding:15px 18px;border:1px solid var(--line);border-radius:13px;color:#c9d6e7;font-size:13px}.related-links a:hover{border-color:#48f3c570;color:var(--green)}.related-links span{color:var(--green)}.article-cta{padding:26px;border:1px solid #43615b;border-radius:19px;background:linear-gradient(110deg,#12392d6b,#15203960);margin-block:30px}.article-cta h2{font-size:21px}.article-cta p{font-size:14px;margin-bottom:20px}.hub-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;padding-block:42px 60px}.guide-card{border:1px solid var(--line);border-radius:20px;background:linear-gradient(150deg,#11243480,#08121d);overflow:hidden;display:flex;flex-direction:column;min-width:0;transition:border-color .2s,transform .2s}.guide-card:hover{border-color:#48f3c570;transform:translateY(-4px)}.guide-visual{height:160px;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;background:radial-gradient(ellipse,#48f3c510,transparent 65%);border-bottom:1px solid var(--line)}.guide-visual:before{content:"";position:absolute;inset:0;background-image:linear-gradient(#64d4fa08 1px,transparent 1px),linear-gradient(90deg,#64d4fa08 1px,transparent 1px);background-size:23px 23px}.guide-visual svg{width:75px;height:75px;color:var(--green);z-index:1}.guide-visual .index{position:absolute;inset-inline-end:20px;bottom:12px;font:12px/1.5 ui-monospace,monospace;color:#97b1c4}.guide-card:nth-child(2) .guide-visual svg{color:var(--blue)}.guide-card:nth-child(3) .guide-visual svg{color:var(--violet)}.guide-card .inner{padding:23px;display:flex;flex:1;flex-direction:column}.guide-card .tag{font-size:11px;color:var(--green);margin-bottom:10px}.guide-card h2{font-size:19px;line-height:1.9;margin-bottom:13px}.guide-card p{font-size:13px;color:var(--muted);line-height:2}.guide-card .read{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;margin-top:auto;padding-top:24px;color:var(--blue)}.hub-intro{max-width:820px;padding-block:10px 55px}.hub-intro h2{font-size:25px;margin-bottom:15px}.hub-intro p{color:var(--muted)}.site-foot{border-top:1px solid var(--line);background:#020510;padding-block:35px}.foot-in{display:flex;justify-content:space-between;gap:25px;align-items:start;flex-wrap:wrap}.foot-links{display:flex;flex-wrap:wrap;gap:12px 25px;font-size:12px;color:var(--muted);max-width:600px}.foot-note{font-size:11px;color:var(--muted);margin-top:25px;padding-top:20px;border-top:1px solid #142431}.source-links{font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:20px;margin-top:25px}.about-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-block:22px}.about-grid .mini-card p{font-size:14px}.small-title{font-size:13px!important;color:var(--green)!important}.status-label{display:inline-block;border:1px solid #305947;border-radius:50px;padding:3px 10px;color:var(--green);font-size:11px}.error-main{text-align:center;max-width:650px;margin:80px auto 100px}.error-main .code{color:var(--green);font:700 70px/1.4 ui-monospace,monospace}.error-main h1{font-size:27px;margin-block:15px}.error-main p{color:var(--muted);margin-bottom:25px}
@media(max-width:1000px){.page-layout{grid-template-columns:minmax(0,1fr);gap:25px}.sidebar{position:static;grid-row:1}.toc{padding:18px 22px}.toc ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 25px}.side-note{display:none}.article{max-width:850px}.hub-grid{gap:15px}.guide-card .inner{padding:18px}.head-nav{gap:17px}.head-in{gap:18px}.hub-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:720px){.wrap{width:calc(100% - 36px)}.head-in{min-height:78px;gap:12px;flex-wrap:wrap;padding-block:12px}.brand svg{width:34px;height:34px}.brand{gap:9px}.brand b{font-size:18px}.brand small{font-size:9px;letter-spacing:2px}.head-nav{order:3;width:100%;justify-content:space-between;gap:12px;padding-top:9px;border-top:1px solid #1c304170;font-size:12px}.head-cta{font-size:11px;padding:8px 12px;min-height:38px}.crumb{padding-top:19px;font-size:11px}.page-hero{padding-block:18px 30px}.page-hero h1{font-size:29px;line-height:1.75;letter-spacing:-.5px}.page-hero .intro{font-size:15px}.meta{font-size:11px;gap:5px 16px;margin-top:20px}.page-layout{padding-block:25px 50px}.toc ol{display:block}.toc li{font-size:12px}.article h2{font-size:23px}.article h3{font-size:18px}.article p,.article li{font-size:15px}.article section{padding-top:17px}.lead-box{padding:20px}.notice{padding:17px}.steps-grid{grid-template-columns:1fr}.mini-card p{font-size:13px}.figures{gap:12px}.shot figcaption{font-size:10px}.field-grid{grid-template-columns:1fr}.calc{padding:20px}.calc-result p{font-size:12px}.calc legend{font-size:17px}.hub-grid{grid-template-columns:1fr;padding-top:28px;gap:24px}.guide-visual{height:150px}.guide-card .inner{padding:24px}.guide-card h2{font-size:22px}.guide-card p{font-size:14px}.guide-card .read{font-size:13px}.about-grid{grid-template-columns:1fr}.article-cta{padding:22px}.article-cta .button{width:100%}.foot-in{gap:26px}.foot-links{gap:12px 20px}.error-main{margin-block:55px 70px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
@media print{body{background:#fff;color:#000;font-size:11pt}.site-head,.sidebar,.site-foot,.copy-row,.article-cta,.related,.calc button,.crumb,.head-cta{display:none!important}.wrap{width:100%;max-width:none}.page-hero{border-color:#ccc}.page-hero h1{font-size:24pt}.page-layout{display:block;padding:0}.article{max-width:none}.article p,.article li,.meta,.page-hero .intro,td{color:#222}.article h2{font-size:17pt}.lead-box,.notice,.calc,.mini-card,.checklist li,.faq-item{background:#fff;border-color:#aaa;break-inside:avoid}.table-wrap{overflow:visible}table{min-width:0}a{color:#000!important}.shot{break-inside:avoid}.figures .shot img{max-height:350px}.page-hero{padding-block:10px 20px}}
