:root{--navy:#102b45;--ink:#1a344d;--gold:#c2a261;--line:#dce4ea;--bg:#f6f8fa;--muted:#677c8c}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);font:15px/1.85 IRANSansX,Tahoma,Arial,sans-serif;color:var(--ink)}a{color:inherit;text-decoration:none}.sidebar{width:260px;position:fixed;right:0;top:0;bottom:0;background:var(--navy);color:#f4f6f8;padding:30px 20px;display:flex;flex-direction:column;z-index:2}.brand{display:flex;align-items:center;gap:12px;margin-bottom:33px;direction:ltr;text-align:left}.mark{width:45px;height:45px;display:grid;place-items:center;border:1px solid var(--gold);color:var(--gold);font:700 29px IRANSansX}.brand b{font:800 28px IRANSansX}.brand small{display:block;color:#c0cbd4;font:400 9px IRANSansX;letter-spacing:.8px}.sidebar nav{display:grid;gap:3px}.sidebar nav a{padding:10px 13px;border-radius:7px;color:#c5d0d9}.sidebar nav a:hover,.sidebar nav a.active{background:#28445c;color:#fff}.side-note{margin-top:auto;color:#9cb0c0;font:400 12px/2 IRANSansX}.side-note span{color:var(--gold)}main{max-width:1420px;margin-right:260px;padding:0 5vw}header{display:flex;align-items:center;justify-content:space-between;padding:27px 0;border-bottom:1px solid var(--line);gap:15px}.eyebrow,.section-top>span,.overline{font:400 11px IRANSansX;letter-spacing:2px;color:#957c49}.repo{font-size:12px;border:1px solid #cbd6df;padding:5px 12px;border-radius:7px}.hero{padding:85px 0 75px;border-bottom:1px solid var(--line)}h1{font:800 clamp(50px,7vw,95px)/1.1 IRANSansX,Tahoma,sans-serif;letter-spacing:-3px;color:var(--navy);direction:ltr;text-align:right;margin:16px 0 22px}h1 em{display:block;font:400 clamp(20px,3vw,35px)/1.3 IRANSansX;color:#b3975e;letter-spacing:0;margin-top:13px}.hero p{font-size:19px;max-width:840px}.chips,.tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px}.chips span,.tags span{font:400 12px IRANSansX;letter-spacing:.5px;border:1px solid #ced8df;padding:8px 12px;border-radius:5px;background:#fff}section:not(.hero){padding:53px 0;border-bottom:1px solid var(--line);scroll-margin-top:12px}.section-top{display:flex;flex-direction:column;gap:5px;margin-bottom:24px}h2{font-size:26px;color:var(--navy);margin:0}.warning{border-right:4px solid var(--gold);background:#fff;padding:22px 25px;border-radius:8px}.warning p{margin-bottom:0}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px;margin-top:19px}.cards article{background:#fff;border:1px solid var(--line);padding:22px;border-radius:9px}.cards b{font:600 16px IRANSansX;direction:ltr;display:block;color:#173850}.cards p{margin-bottom:0;font-size:13px;color:#5b7182}.tags span{font-size:13px;padding:12px 15px}.timeline{display:grid;gap:12px;margin:24px 0}.timeline>div{display:grid;grid-template-columns:35px 1fr;align-items:center;gap:0 14px;background:#fff;padding:15px 22px;border:1px solid var(--line);border-radius:8px}.timeline b{grid-row:span 2;font:700 18px IRANSansX;color:#a88b55}.timeline small{color:var(--muted)}.stack{display:grid;gap:8px}.stack>div{display:flex;justify-content:space-between;align-items:center;gap:22px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:7px}.stack strong{font:500 15px IRANSansX;color:var(--navy);direction:ltr}.stack small{color:var(--muted)}.docgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.docgrid a{padding:18px;background:#fff;border:1px solid var(--line);border-radius:8px}.docgrid a:hover{border-color:var(--gold)}.muted{font-size:13px;color:var(--muted)}footer{padding:40px 0;color:var(--muted);font:400 12px IRANSansX;direction:ltr;text-align:center}@media(max-width:950px){.sidebar{width:auto;position:relative;padding:15px}.sidebar nav{display:flex;overflow:auto;white-space:nowrap}.brand{margin-bottom:12px}.side-note{display:none}main{margin-right:0;padding:0 22px}.cards{grid-template-columns:repeat(2,1fr)}.stack>div{display:block}.stack small{display:block}}@media(max-width:600px){.cards,.docgrid{grid-template-columns:1fr}.hero{padding:40px 0}header{flex-wrap:wrap}h1{letter-spacing:-1px}}
/* VNOS typography baseline v0.2.1 — install licensed WOFF under assets/fonts/ */
@font-face{font-family:'IRANSansX';src:url('/assets/fonts/IRANSansX-Thin.woff') format('woff');font-style:normal;font-weight:100;font-display:swap}
@font-face{font-family:'IRANSansX';src:url('/assets/fonts/IRANSansX-UltraLight.woff') format('woff');font-style:normal;font-weight:200;font-display:swap}
@font-face{font-family:'IRANSansX';src:url('/assets/fonts/IRANSansX-Light.woff') format('woff');font-style:normal;font-weight:300;font-display:swap}
@font-face{font-family:'IRANSansX';src:url('/assets/fonts/IRANSansX-Regular.woff') format('woff');font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:'IRANSansX';src:url('/assets/fonts/IRANSansX-Medium.woff') format('woff');font-style:normal;font-weight:500;font-display:swap}
@font-face{font-family:'IRANSansX';src:url('/assets/fonts/IRANSansX-DemiBold.woff') format('woff');font-style:normal;font-weight:600;font-display:swap}
@font-face{font-family:'IRANSansX';src:url('/assets/fonts/IRANSansX-Bold.woff') format('woff');font-style:normal;font-weight:700;font-display:swap}
@font-face{font-family:'IRANSansX';src:url('/assets/fonts/IRANSansX-ExtraBold.woff') format('woff');font-style:normal;font-weight:800;font-display:swap}
@font-face{font-family:'IRANSansX';src:url('/assets/fonts/IRANSansX-Black.woff') format('woff');font-style:normal;font-weight:900;font-display:swap}
:root{font-family:'IRANSansX',Tahoma,Arial,sans-serif}
html,body,button,input,select,textarea,summary,table{font-family:'IRANSansX',Tahoma,Arial,sans-serif}
body{font-weight:400;letter-spacing:normal}
h1,h2,h3,h4,h5,h6,b,strong{font-family:'IRANSansX',Tahoma,Arial,sans-serif}
button,input,select,textarea{font-size:inherit}
.sidebar,.sidebar nav,.side-note,.eyebrow,.section-top,.overline,.repo,.brand,.brand b,.brand small,.tags,.chips,.chips span,.cards,.stack,.timeline,footer{font-family:'IRANSansX',Tahoma,Arial,sans-serif}

/* Active navigation clarity: only the current section is emphasized. */
.sidebar nav a{font-weight:400}
.sidebar nav a.active{font-weight:700}
.sidebar nav a:focus-visible{outline:2px solid var(--gold);outline-offset:2px}