:root{--bg:#0e1116;--fg:#f4f6f8;--muted:#b7c0c8;--accent:#e23d3d;--card:#171b22;--line:#27303a;}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;direction:rtl;font-family:Vazirmatn,IRANSans,Tahoma,Arial,sans-serif;background:var(--bg);color:var(--fg)}
a{color:var(--fg);text-decoration:none}a:hover{color:var(--accent)}
.container{width:min(1240px,92%);margin-inline:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(14,17,22,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.head-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.logo{font-weight:800;letter-spacing:.2px}.logo small{color:var(--muted);font-weight:400}
.nav ul{display:flex;gap:18px;list-style:none;margin:0;padding:0}
.lang{font-size:13px;color:var(--muted)}
.hero{position:relative;height:92vh;background:url('/assets/images/steel-banner.jpg') center/cover no-repeat;display:flex;align-items:center}
.hero::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.45),rgba(0,0,0,.7))}
.hero-content{position:relative;z-index:2;max-width:900px;padding:20px}
.hero-title{font-size:54px;line-height:1.25;margin:0 0 12px}
.hero-sub{font-size:20px;color:var(--muted);margin:0 0 18px}
.btn{display:inline-block;padding:12px 20px;border-radius:10px;background:var(--accent);color:#fff;font-weight:700}
.btn.outline{background:transparent;border:1px solid var(--accent);color:var(--accent)}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;text-align:center}
.kpi b{font-size:22px;display:block}
.tabs{margin-top:-40px;position:relative;z-index:3}
.tabbar{background:var(--card);border:1px solid var(--line);border-radius:14px;display:flex;flex-wrap:wrap;gap:8px;padding:10px}
.tabbar a{padding:10px 14px;border-radius:10px;border:1px solid transparent}
.tabbar a.active,.tabbar a:hover{border-color:var(--accent);color:#fff}
.section{padding:48px 0;border-top:1px solid var(--line)}
.section h2{font-size:26px;margin:0 0 16px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px}
.table{width:100%;border-collapse:collapse}.table th,.table td{border:1px solid var(--line);padding:10px}
.board{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.member{text-align:center}
.member img{width:96px;height:96px;border-radius:50%;border:2px solid var(--line);object-fit:cover}
.member h4{margin:10px 0 6px}
.member p{margin:0;color:var(--muted);font-size:14px}
footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted)}
@media (max-width:1100px){.kpis{grid-template-columns:repeat(2,1fr)}.board{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:1fr}}
@media (max-width:780px){.hero-title{font-size:38px}.hero{height:78vh}.grid-2{grid-template-columns:1fr}}
.bottom-notes{padding:52px 0}
.bottom-notes textarea{width:100%;min-height:180px;background:#11151b;border:1px dashed var(--line);border-radius:12px;color:var(--fg);padding:14px}