:root{--blue:#1456f0;--blue2:#0a2f8f;--ice:#eaf1ff;--ink:#0a0f1a;--steel:#5b6578;--line:#dbe3f2;--bg:#fff;--r:14px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Vazirmatn,Tahoma,sans-serif;color:var(--ink);background:var(--bg);line-height:1.95;font-size:16px}
a{color:var(--blue);text-decoration:none}
img{max-width:100%;display:block}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.wrap{max-width:1120px;margin:auto;padding:0 20px}

/* header */
header{background:#000;position:sticky;top:0;z-index:50;border-bottom:2px solid var(--blue)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px}
.brand img{width:52px;height:52px;object-fit:contain}
nav{display:flex;gap:6px}
nav a{color:#cfd8ea;padding:8px 14px;border-radius:8px;font-size:15px}
nav a:hover,nav a.on{background:var(--blue);color:#fff}
#menu,.burger{display:none}

/* hero */
.hero{background:radial-gradient(900px 400px at 75% 20%,#0f2c7a 0,#000 70%);color:#fff;padding:64px 0 0;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1fr 1.15fr;gap:30px;align-items:center}
.hero h1{font-size:clamp(30px,4.6vw,52px);line-height:1.5;font-weight:900}
.hero p{color:#b9c6e2;margin:14px 0 26px;max-width:52ch}
.btn{display:inline-block;background:var(--blue);color:#fff;padding:12px 26px;border-radius:10px;font-weight:700;border:2px solid var(--blue);cursor:pointer;font-family:inherit;font-size:16px}
.btn:hover{background:#0f43c4}
.btn.ghost{background:transparent;border-color:#5f7bd6;margin-inline-start:10px}
.btn.ghost:hover{background:#fff;color:var(--ink)}
.dyno{width:100%;height:auto}
.roller{transform-origin:center;transform-box:fill-box;animation:spin 1.1s linear infinite}
.curve{stroke-dasharray:900;stroke-dashoffset:900;animation:draw 3.5s ease-out .4s forwards}
@keyframes spin{to{transform:rotate(-360deg)}}
@keyframes draw{to{stroke-dashoffset:0}}
.strip{background:var(--blue);color:#fff}
.strip .wrap{display:flex;flex-wrap:wrap;justify-content:space-around;gap:10px;padding-top:14px;padding-bottom:14px;font-weight:700}

/* page heads */
.pagehead{background:#000;color:#fff;padding:46px 0;border-bottom:4px solid var(--blue)}
.pagehead h1{font-size:clamp(26px,4vw,40px);line-height:1.5}
.pagehead p{color:#b9c6e2;max-width:60ch}

/* sections */
section{padding:60px 0}
section.alt{background:var(--ice)}
h2{font-size:clamp(22px,3vw,30px);margin-bottom:6px;line-height:1.6}
.lead{color:var(--steel);max-width:62ch;margin-bottom:28px}
h3{font-size:19px;margin:22px 0 4px;color:var(--blue2)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-inline-start:5px solid var(--blue);border-radius:var(--r);padding:22px}
.card h3{margin-top:0}
.card p{color:var(--steel);font-size:15px}
.prose{max-width:780px}
.prose p{margin:10px 0;text-align:justify}
.prose ul{margin:10px 24px}
.note{background:var(--ice);border-inline-start:5px solid var(--blue);padding:14px 18px;border-radius:10px;margin:18px 0;font-size:15px}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:34px}
.toc a{background:var(--ice);padding:6px 14px;border-radius:99px;font-size:14px;font-weight:600}
.toc a:hover{background:var(--blue);color:#fff}
article{padding:26px 0;border-bottom:1px solid var(--line)}
.steps{counter-reset:s;list-style:none;margin:0!important}
.steps li{counter-increment:s;padding:12px 56px 12px 0;position:relative}
.steps li:before{content:counter(s);position:absolute;right:0;top:10px;width:38px;height:38px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800}
table{width:100%;border-collapse:collapse;margin:14px 0;font-size:15px}
th,td{border:1px solid var(--line);padding:10px 12px;text-align:right}
th{background:var(--blue);color:#fff}
.faq details{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:10px;background:#fff}
.faq summary{cursor:pointer;font-weight:700}
.faq p{color:var(--steel);margin-top:8px}

/* contact */
.cols{display:grid;grid-template-columns:1fr 1fr;gap:30px}
form{display:grid;gap:12px}
input,select,textarea{width:100%;padding:12px;border:1px solid #b8c5e3;border-radius:10px;font-family:inherit;font-size:15px}
textarea{min-height:110px}
.info p{margin:8px 0}
.info b{color:var(--blue2)}

/* footer + floating */
footer{background:#000;color:#aab6d2;padding:34px 0 90px;border-top:3px solid var(--blue);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between}
footer a{color:#fff}
.float{position:fixed;bottom:18px;left:18px;display:flex;flex-direction:column;gap:10px;z-index:60}
.float a{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:12px;font-weight:800;box-shadow:0 4px 14px #0006}
.float .call{background:var(--blue)}
.float .wa{background:#1fa855}

@media(max-width:820px){
 .hero .wrap,.cols{grid-template-columns:1fr}
 .burger{display:block;color:#fff;font-size:28px;cursor:pointer;padding:4px 10px}
 nav{display:none;position:absolute;top:68px;right:0;left:0;background:#000;flex-direction:column;padding:10px 20px 18px;border-bottom:2px solid var(--blue)}
 #menu:checked~nav{display:flex}
 section{padding:44px 0}
}
@media(prefers-reduced-motion:reduce){.roller,.curve{animation:none;stroke-dashoffset:0}}

/* v2 additions */
nav a{padding:8px 11px;font-size:14.5px}
.heroimg{width:100%;height:auto;border-radius:18px;border:2px solid var(--blue);box-shadow:0 0 50px #1456f055;margin-bottom:34px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.chips a{background:#fff;border:1px solid var(--line);padding:8px 18px;border-radius:99px;font-weight:700}
.chips a:hover{background:var(--blue);color:#fff}
.danger{background:#fff4f2;border:1px solid #f1b7ae;border-inline-start:5px solid #d6402b;border-radius:10px;padding:14px 18px;margin:18px 0}
.danger h3{color:#a8281a;margin-top:0}
.vs td:nth-child(3){background:var(--ice);font-weight:600}
.vs th:nth-child(3){background:#0a2f8f}
.engine{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;margin-bottom:26px}
.engine h2{color:var(--blue2)}
.tag{display:inline-block;background:var(--ice);color:var(--blue2);border-radius:99px;padding:2px 12px;font-size:13px;font-weight:700;margin-inline-end:6px}
@media(max-width:1000px){nav a{padding:8px 8px;font-size:13.5px}}
@media(max-width:820px){nav a{font-size:15px;padding:10px 12px}}