:root{--bg:#0b0b0d;--fg:#fff;--mut:#9a9aa0;--line:#26262b;--acc:#6e1028;--card:#121215;box-sizing:border-box;padding-top:env(safe-area-inset-top,0);padding-bottom:env(safe-area-inset-bottom,0)}html{scroll-behavior:smooth;scroll-padding-top:env(safe-area-inset-top,0)}*{box-sizing:border-box;margin:0}body{background:var(--bg);color:var(--fg);font-family:Vazirmatn,Tahoma,sans-serif;line-height:1.9}.w{max-width:960px;margin:auto;padding:0 20px}header{position:-webkit-sticky;position:sticky;top:env(safe-area-inset-top,0);background:rgba(11,11,13,.92);border-bottom:1px solid var(--line);z-index:5}header .w{display:flex;justify-content:space-between;align-items:center;height:56px}.logo{font-weight:800;letter-spacing:.2em;font-family:Arial,sans-serif}.btn{display:inline-block;background:var(--acc);color:#fff;padding:10px 22px;text-decoration:none;font-weight:600;border:1px solid var(--acc);transition:.2s}.btn:hover{background:#85152f}.btn.o{background:none;border-color:var(--line)}.hero{min-height:82vh;display:flex;align-items:center;border-bottom:1px solid var(--line)}.hero small{color:var(--mut);letter-spacing:.3em;font-family:Arial,sans-serif}h1{font-size:clamp(2rem,7vw,3.8rem);font-weight:800;line-height:1.4;margin:12px 0}h1 span{color:#c4344f}.hero p{color:var(--mut);max-width:520px;margin-bottom:28px}.hero .btn+.btn{margin-right:10px}section{padding:64px 0;border-bottom:1px solid var(--line)}h2{font-size:1.6rem;font-weight:800;margin-bottom:8px}.lead{color:var(--mut);max-width:560px;margin-bottom:28px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:14px;gap:14px}.card{background:var(--card);border:1px solid var(--line);padding:22px}.card h3{font-size:1.05rem;margin-bottom:4px}.card p{font-size:.92rem}.card p,.ph{color:var(--mut)}.ph{aspect-ratio:4/5;background:var(--card);border:1px solid var(--line);display:flex;align-items:end;padding:12px;font-size:.85rem}.quote{font-size:1.3rem;border-right:3px solid var(--acc);padding-right:16px}.cta,footer{text-align:center}footer{padding:28px 0;color:var(--mut);font-size:.85rem}.bk{max-width:560px;margin:auto;text-align:right}.bk h3{margin:22px 0 10px;font-size:1rem;color:var(--mut)}.opts{display:flex;flex-wrap:wrap;gap:8px}.opt{background:var(--card);color:var(--fg);border:1px solid var(--line);padding:9px 14px;font:inherit;cursor:pointer;min-width:84px}.opt.on{border-color:var(--acc);background:var(--acc)}.opt:disabled{opacity:.35;cursor:not-allowed;text-decoration:line-through}.opt small{display:block;color:var(--mut);font-size:.75rem}.opt.on small{color:#eee}.bk input{width:100%;background:var(--card);border:1px solid var(--line);color:var(--fg);padding:11px;font:inherit;margin-bottom:8px}.err{color:#e0566f;font-size:.88rem;min-height:1.4em}.sum{background:var(--card);border:1px solid var(--line);padding:16px;margin:12px 0}.code{font-size:1.6rem;font-weight:800;letter-spacing:.15em;font-family:Arial,sans-serif;direction:ltr;text-align:center;margin:8px 0}