:root{--zst-ink:#14213d;--zst-blue:#1769e0;--zst-cyan:#22b8cf;--zst-bg:#f5f8fc;--zst-muted:#65738b;--zst-line:#e2e8f0;--zst-radius:20px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--zst-ink);font-family:Vazirmatn,Tahoma,sans-serif;line-height:1.8}a{color:var(--zst-blue);text-decoration:none}a:hover{color:#0e4eaf}img{max-width:100%;height:auto}.container{width:min(1160px,calc(100% - 36px));margin-inline:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--zst-line)}.header-inner{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;color:var(--zst-ink);font-weight:800}.brand img{width:142px;max-height:52px;object-fit:contain}.brand small{display:block;color:var(--zst-muted);font-size:11px;font-weight:500}.primary-nav ul,.menu-fallback{display:flex;gap:22px;align-items:center;list-style:none;margin:0;padding:0}.primary-nav a,.menu-fallback a{color:#334155;font-size:14px;font-weight:600}.header-actions{display:flex;align-items:center;gap:10px}.btn,button,.woocommerce a.button,.woocommerce button.button,.woocommerce input.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;background:var(--zst-blue);color:#fff!important;padding:12px 18px;font:600 14px Vazirmatn,sans-serif;cursor:pointer;transition:.2s}.btn:hover,button:hover,.woocommerce a.button:hover{background:#1056bd;transform:translateY(-1px)}.btn-light{background:#edf4ff;color:var(--zst-blue)!important}.hero{padding:76px 0 64px;background:radial-gradient(ellipse at 85% 10%,rgba(34,184,207,.16),transparent 38%),radial-gradient(ellipse at 10% 0%,rgba(23,105,224,.12),transparent 40%),linear-gradient(180deg,#fbfdff,#f4f8ff)}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:52px}.eyebrow{display:inline-flex;border:1px solid #d8e8ff;border-radius:999px;padding:6px 13px;color:var(--zst-blue);font-size:13px;font-weight:700;background:#fff}.hero h1{font-size:clamp(32px,4vw,54px);line-height:1.35;letter-spacing:-1.2px;margin:20px 0}.hero h1 span{color:var(--zst-blue)}.hero p{color:var(--zst-muted);font-size:17px;max-width:620px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.hero-card{background:#fff;border:1px solid var(--zst-line);border-radius:28px;padding:28px;box-shadow:0 24px 70px rgba(31,69,122,.10)}.hero-card .big-icon{width:68px;height:68px;border-radius:20px;background:#eaf3ff;display:grid;place-items:center;color:var(--zst-blue);font-size:32px}.hero-card h3{margin:18px 0 8px}.hero-card p{font-size:14px}.mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:24px}.mini-stat{background:#f6f9fd;border-radius:14px;padding:13px;text-align:center}.mini-stat strong{display:block;font-size:18px;color:var(--zst-blue)}.mini-stat span{font-size:11px;color:var(--zst-muted)}.section{padding:68px 0}.section-soft{background:var(--zst-bg)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}.section-head h2{font-size:clamp(24px,3vw,34px);margin:0}.section-head p{color:var(--zst-muted);margin:8px 0 0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-card,.service-card,.content-card{border:1px solid var(--zst-line);border-radius:var(--zst-radius);padding:24px;background:#fff;box-shadow:0 8px 26px rgba(15,40,80,.035)}.feature-icon{width:48px;height:48px;display:grid;place-items:center;border-radius:15px;background:#eaf3ff;color:var(--zst-blue);font-size:23px;font-weight:800}.feature-card h3,.service-card h3{margin:15px 0 6px}.feature-card p,.service-card p{color:var(--zst-muted);font-size:14px;margin:0}.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.service-card{transition:.2s}.service-card:hover{transform:translateY(-4px);border-color:#b9d5ff;box-shadow:0 18px 38px rgba(15,80,160,.09)}.service-card a{display:inline-block;margin-top:16px;font-weight:700}.cta-band{background:linear-gradient(120deg,#123d86,#1769e0 65%,#22a7c7);color:#fff;border-radius:28px;padding:34px;display:flex;align-items:center;justify-content:space-between;gap:24px}.cta-band h2{margin:0 0 6px}.cta-band p{margin:0;color:#e2edff}.cta-band .btn{background:#fff;color:#1455ae!important}.site-footer{background:#101d34;color:#d7e2f3;padding:46px 0 22px;margin-top:50px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:34px}.site-footer h3,.site-footer h4{color:#fff}.site-footer a{color:#d7e2f3}.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:8px 0}.copyright{border-top:1px solid #30405b;margin-top:32px;padding-top:18px;color:#9fb0ca;font-size:12px}.page-content{padding:44px 0;min-height:45vh}.page-content h1{font-size:34px}.entry-content,.woocommerce{line-height:1.9}.entry-content input,.entry-content textarea,.entry-content select,.zst-form input,.zst-form textarea,.zst-form select{width:100%;border:1px solid #d7e0ed;border-radius:11px;padding:12px 14px;font:inherit;background:#fff}.zst-form label{display:block;font-size:13px;font-weight:700;margin:12px 0 6px}.zst-form button{margin-top:16px}.zst-notice{border-radius:12px;background:#eff6ff;padding:14px 16px;margin:18px 0;color:#1d4d91}.zst-error{background:#fff1f2;color:#9f1239}.repair-result{border:1px solid var(--zst-line);border-radius:16px;padding:18px;margin-top:18px}.repair-status{display:inline-block;background:#eaf3ff;color:#1557b5;border-radius:999px;padding:4px 12px;font-size:12px;font-weight:700}.woocommerce ul.products li.product,.woocommerce div.product,.woocommerce-cart-form,.woocommerce-checkout #customer_details{border-radius:16px}.mobile-toggle{display:none;background:#eef4ff;color:var(--zst-blue)!important}.screen-reader-text{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px)}@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:28px}.cards,.service-grid{grid-template-columns:repeat(2,1fr)}.primary-nav{display:none;position:absolute;top:78px;right:0;left:0;background:#fff;padding:18px 22px;border-bottom:1px solid var(--zst-line)}.primary-nav.is-open{display:block}.primary-nav ul,.menu-fallback{align-items:stretch;flex-direction:column;gap:12px}.mobile-toggle{display:inline-flex}.header-actions .btn-light{display:none}.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:600px){.container{width:min(100% - 24px,1160px)}.hero{padding:48px 0}.cards,.service-grid,.mini-stats,.footer-grid{grid-template-columns:1fr}.section{padding:48px 0}.section-head,.cta-band{align-items:flex-start;flex-direction:column}.hero h1{font-size:33px}.hero-card{padding:22px}.header-inner{gap:10px}.brand img{width:112px}}
/* ZST header refresh: clear hierarchy, searchable header and DigiKala-inspired mega menu */
.topbar{background:#10213e;color:#dce7f7;font-size:12px}.topbar-inner{min-height:34px;display:flex;align-items:center;justify-content:space-between;gap:16px}.topbar-links{display:flex;gap:18px}.topbar a{color:#fff}.header-inner{min-height:92px;display:grid;grid-template-columns:auto minmax(220px,1fr) auto;gap:28px}.brand{min-width:180px}.brand strong{display:block;font-size:20px;line-height:1.4;color:var(--zst-ink)}.header-search{display:flex;align-items:center;min-width:0;background:#f3f6fb;border:1px solid #e3e9f3;border-radius:13px;padding:4px;max-width:640px;width:100%}.header-search input{width:100%;min-width:0;border:0;outline:0;background:transparent;padding:11px 14px;font:14px Vazirmatn,Tahoma,sans-serif;color:var(--zst-ink)}.header-search button{width:42px;min-width:42px;height:42px;padding:0;font-size:25px;border-radius:10px}.header-actions{gap:18px}.header-icon-link{display:flex;align-items:center;gap:7px;color:#334155;font-size:13px;font-weight:700;white-space:nowrap}.header-icon-link>span:first-child{font-size:20px}.nav-bar{border-top:1px solid #f0f3f8;background:#fff}.nav-inner{display:flex;align-items:center;gap:22px;min-height:54px}.catalog-toggle{background:#f0f6ff;color:#1557b5!important;border:1px solid #d8e7ff;border-radius:10px;padding:10px 14px;white-space:nowrap;font-size:13px}.catalog-toggle .chevron{margin-right:8px}.primary-nav{flex:1;min-width:0}.primary-nav ul{display:flex;gap:clamp(12px,2vw,26px);flex-wrap:wrap}.primary-nav a{font-size:13px;white-space:nowrap}.nav-cta{font-size:13px;font-weight:800;color:#1769e0;white-space:nowrap}.mega-wrap{position:relative}.mega-menu{position:absolute;top:0;right:0;left:0;z-index:80;display:grid;grid-template-columns:1.1fr 1fr 1fr 1.2fr;gap:22px;padding:24px;background:#fff;border:1px solid #e3eaf4;border-radius:0 0 20px 20px;box-shadow:0 24px 55px rgba(19,42,78,.16)}.mega-menu[hidden]{display:none!important}.mega-intro{background:linear-gradient(145deg,#eaf3ff,#f4fbff);border-radius:15px;padding:18px}.mega-intro strong{font-size:17px}.mega-intro p{font-size:13px;color:var(--zst-muted);margin:8px 0 16px}.mega-intro>a,.mega-all{font-weight:800;font-size:13px}.mega-column{display:flex;flex-direction:column;align-items:flex-start;gap:9px;min-width:0}.mega-column h3{font-size:14px;margin:2px 0 7px;padding-bottom:8px;border-bottom:2px solid #e9f1ff;width:100%}.mega-column a{font-size:13px;color:#53627a;line-height:1.7}.mega-column a:hover{color:var(--zst-blue)}.mega-column .mega-all{color:var(--zst-blue);margin-top:5px}.mobile-toggle{display:none}.article-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.article-card{overflow:hidden;padding:0;border:1px solid var(--zst-line);border-radius:18px;background:#fff;transition:transform .2s,box-shadow .2s}.article-card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(15,40,80,.09)}.article-card .article-thumb{display:block;aspect-ratio:16/9;background:#eef4fb;overflow:hidden}.article-card .article-thumb img{width:100%;height:100%;object-fit:cover}.article-card .article-body{padding:18px}.article-card .article-meta{font-size:11px;color:var(--zst-muted);margin-bottom:7px}.article-card h3{font-size:16px;line-height:1.7;margin:0 0 8px}.article-card h3 a{color:var(--zst-ink)}.article-card p{font-size:13px;color:var(--zst-muted);margin:0}.article-card .read-more{display:inline-block;font-size:13px;font-weight:800;margin-top:13px}.articles-empty{border:1px dashed #cad6e7;border-radius:16px;padding:22px;color:var(--zst-muted);background:#f8fbff}
@media(max-width:1000px){.header-inner{grid-template-columns:auto 1fr auto;gap:14px}.header-actions{gap:10px}.header-icon-link span:last-child{display:none}.nav-inner{gap:12px}.primary-nav ul{gap:12px}.primary-nav a{font-size:12px}.mega-menu{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.topbar-inner{min-height:31px}.topbar-inner>span{max-width:58%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar-links{gap:10px}.header-inner{min-height:auto;padding-block:13px;grid-template-columns:1fr auto;gap:12px}.brand{min-width:0}.brand img{width:92px}.brand strong{font-size:17px}.brand small{font-size:10px}.header-search{grid-column:1/-1;grid-row:2;max-width:none}.header-actions{display:none}.mobile-toggle{display:inline-flex;grid-column:2;grid-row:1;padding:9px 11px}.nav-inner{min-height:50px;flex-wrap:wrap;padding-block:8px}.catalog-toggle{flex:1;text-align:center}.primary-nav{display:none;position:absolute;top:100%;right:12px;left:12px;background:#fff;padding:16px;border:1px solid var(--zst-line);border-radius:14px;box-shadow:0 18px 40px rgba(19,42,78,.14);z-index:90}.primary-nav.is-open{display:block}.primary-nav ul{align-items:stretch;flex-direction:column;gap:0}.primary-nav li+li{border-top:1px solid #edf1f7}.primary-nav a{display:block;padding:9px 4px;font-size:14px}.nav-cta{display:none}.mega-menu{position:relative;grid-template-columns:1fr 1fr;gap:16px;padding:16px;border-radius:0 0 16px 16px}.mega-wrap{width:100%}.article-grid{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.article-grid{grid-template-columns:1fr}.mega-menu{grid-template-columns:1fr}.topbar-inner{width:calc(100% - 24px)}.topbar-inner>span{max-width:52%;font-size:10px}.topbar-links{font-size:10px}}