:root{
  --brand:#0f6cbd; --brand-d:#0b5394; --ink:#16181d; --mut:#5b6270;
  --line:#e6e8ee; --bg:#ffffff; --soft:#f5f7fb; --ok:#107c41; --err:#b10e1c; --r:14px;
}
*{box-sizing:border-box}
body{margin:0;font-family:Tahoma,"Segoe UI",IRANSans,sans-serif;color:var(--ink);background:var(--bg);line-height:1.9}
a{color:inherit;text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
main.wrap{display:block;padding-top:8px;padding-bottom:40px}
h1{font-size:32px;line-height:1.35;margin:14px 0}
h2{font-size:24px;margin:26px 0 12px}
h3{font-size:18px;margin:0 0 6px}
.center{text-align:center}
.lead{font-size:18px;color:var(--mut)}
.mut{color:var(--mut)}
.ok{color:var(--ok)} .err{color:var(--err)}
.link{color:var(--brand);font-weight:700}
code{background:var(--soft);padding:2px 7px;border-radius:6px;direction:ltr;display:inline-block;font-size:14px}

.btn{display:inline-block;padding:11px 20px;border-radius:12px;font-weight:700;border:2px solid transparent;cursor:pointer;transition:.15s}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand)}
.btn-white{background:#fff;color:var(--brand)}
.row{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}

/* هدر */
.site-header{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:14px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:19px}
.logo{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),#4aa3ff);display:inline-grid;place-items:center;color:#fff;font-weight:800}
.nav-links{display:flex;gap:18px}
.nav-links a{color:var(--mut);font-size:15px}
.nav-links a:hover{color:var(--ink)}
@media(max-width:880px){.nav-links{display:none}}

/* قهرمان */
.hero{padding:56px 0 36px;background:radial-gradient(900px 320px at 85% -10%,#e7f1fb,transparent)}
.hero-split{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}
.hero-media img,.hero-media .img-ph{width:100%;height:auto;border-radius:18px;box-shadow:0 14px 40px rgba(15,108,189,.14)}
@media(max-width:820px){.hero-split{grid-template-columns:1fr}.hero-media{order:-1}}
.hero h1{font-size:40px}
.hero h1 span{color:var(--brand)}
.hero .lead{max-width:640px}
.trust{color:var(--mut);font-size:14px;margin-top:16px}
@media(max-width:640px){.hero h1{font-size:28px}}

section{padding:34px 0}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid.g3{grid-template-columns:repeat(3,1fr)}
@media(max-width:860px){.grid,.grid.g3{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.grid,.grid.g3{grid-template-columns:1fr}}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;display:block}
.card.product:hover,.card.article:hover{border-color:var(--brand);box-shadow:0 8px 24px rgba(15,108,189,.10)}
.ic{font-size:30px;margin-bottom:8px}
.ic.big{font-size:44px}

/* تصاویر و جایگزین گرادیانت */
.card-img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;border-radius:10px;margin-bottom:10px;display:block}
.article .card-img{aspect-ratio:16/9}
.img-ph{width:100%;border-radius:12px;background:
  radial-gradient(120px 80px at 30% 25%,rgba(255,255,255,.35),transparent),
  linear-gradient(135deg,var(--brand),#4aa3ff);
  display:block}
.prod-hero,.post-hero{margin:8px 0 16px}
.prod-img,.post-img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;border-radius:16px}
.post-img{aspect-ratio:16/9}
.more{color:var(--brand);font-weight:700;font-size:14px}

.steps .num{width:42px;height:42px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:10px}
.steps .step{text-align:center}

.cta-band{background:linear-gradient(135deg,var(--brand),#2c86d8);color:#fff;border-radius:22px;padding:40px;text-align:center;margin:26px 0}
.cta-band h2{margin:0 0 8px}
.cta-band p{opacity:.9;margin:0 0 18px}

.crumbs{color:var(--mut);font-size:14px;margin:14px 0}
.crumbs a{color:var(--brand)}

.doc{max-width:760px}
.doc h2{margin-top:24px}
.checks{list-style:none;padding:0}
.checks li{position:relative;padding-inline-start:26px;margin:8px 0}
.checks li::before{content:"✔";color:var(--ok);position:absolute;inset-inline-start:0}
.prod-detail{max-width:760px}
.post p{margin:12px 0}
.cta-inline{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0;padding:16px;background:var(--soft);border-radius:var(--r)}

.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:20px 0}
@media(max-width:860px){.plans{grid-template-columns:1fr}}
.plan{text-align:center}
.plan.featured{border-color:var(--brand);box-shadow:0 10px 30px rgba(15,108,189,.12)}
.plan .price{font-size:26px;font-weight:800;color:var(--brand);margin:8px 0}
.plan .price span{font-size:13px;color:var(--mut);font-weight:400}

.faq{max-width:760px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:8px 0}
.faq summary{cursor:pointer;font-weight:700}

.center-block{text-align:center;padding:30px 0}
.contact-form{display:flex;flex-direction:column;gap:10px;max-width:520px}
.contact-form input,.contact-form textarea{padding:10px;border:1px solid var(--line);border-radius:8px;font:inherit}

/* فوتر */
.site-footer{border-top:1px solid var(--line);background:var(--soft);margin-top:30px;padding:30px 0 10px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:20px}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-grid h4{margin:0 0 8px;font-size:15px}
.foot-grid a{display:block;color:var(--mut);font-size:14px;margin:4px 0}
.foot-grid a:hover{color:var(--brand)}
.copy{color:var(--mut);font-size:13px;text-align:center;padding:16px 0}