@font-face{font-family:Fredoka;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/fredoka-latin-600-normal-C4zohCW5.woff2)format("woff2"),url(/assets/fredoka-latin-600-normal-CcrEjrB4.woff)format("woff")}@font-face{font-family:Fredoka;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/fredoka-latin-700-normal-BOIZVyIN.woff2)format("woff2"),url(/assets/fredoka-latin-700-normal-C8FeHd3X.woff)format("woff")}@font-face{font-family:Vazirmatn;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/vazirmatn-arabic-500-normal-C_lbnnKa.woff2)format("woff2"),url(/assets/vazirmatn-arabic-500-normal-Dqq3-xo3.woff)format("woff")}@font-face{font-family:Vazirmatn;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/vazirmatn-arabic-800-normal-Bwnt96zj.woff2)format("woff2"),url(/assets/vazirmatn-arabic-800-normal-BH12s3-y.woff)format("woff")}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--font:"Fredoka", "Vazirmatn", system-ui, sans-serif;--bg:#2b7bc4;--bg-dots:#ffffff21;--on-bg:#fff;--on-bg-muted:#ffffffd9;--panel:#fff;--panel-edge:#1c5c99;--ink:#173a5e;--muted:#4a6684;--soft:#b8c9db;--x:#f0453a;--o:#ffc531;--well:#e6eef7;--primary:#3dbe5a;--primary-edge:#23863a}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#0f2238;--bg-dots:#ffffff0f;--on-bg:#eaf3ff;--on-bg-muted:#eaf3ffcc;--panel:#1b3553;--panel-edge:#081627;--ink:#eaf3ff;--muted:#a3bbd6;--soft:#0b1d33;--x:#ff5a4e;--o:#ffcb3d;--well:#0d2e52;--primary:#34b553;--primary-edge:#1d7434}}*{box-sizing:border-box}body{font:500 17px/1.55 var(--font);color:var(--on-bg);background:var(--bg) radial-gradient(var(--bg-dots) 2px, transparent 2.5px) 0 0 / 22px 22px;-webkit-font-smoothing:antialiased;margin:0}main{max-width:720px;margin:0 auto;padding:24px 16px 40px}a{color:inherit}.top{justify-content:space-between;align-items:center;font-weight:700;display:flex}.top a{background:#ffffff29;border-radius:999px;padding:6px 12px;text-decoration:none}.hero{text-align:center;padding:28px 0 8px}h1{margin:0 0 12px;font-size:clamp(30px,8vw,44px);font-weight:700;line-height:1.12}.lede{color:var(--on-bg-muted);max-width:34em;margin:0 auto 24px;font-size:19px}.board{width:min(240px,64vw);height:auto;margin:0 auto 28px;display:block}.actions{flex-direction:column;gap:14px;max-width:360px;margin:0 auto;display:flex}.btn{text-align:center;border-radius:18px;padding:14px 20px;font-size:21px;font-weight:700;text-decoration:none;transition:transform 80ms;display:block}.btn:active{transform:translateY(3px)}.btn small{opacity:.85;font-size:14px;font-weight:600;display:block}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 0 var(--primary-edge)}.btn-secondary{background:var(--panel);color:var(--ink);box-shadow:0 6px 0 var(--soft)}section{background:var(--panel);color:var(--ink);box-shadow:0 6px 0 var(--panel-edge);border-radius:24px;margin-top:28px;padding:20px 22px}h2{margin:0 0 10px;font-size:24px;line-height:1.2}h3{margin:18px 0 2px;font-size:18px}section p,section li{color:var(--muted)}section p{margin:0}section ol,section ul{margin:0;padding-inline-start:22px}section li+li{margin-top:6px}section b{color:var(--ink)}footer{text-align:center;color:var(--on-bg-muted);margin-top:32px;font-size:15px}[dir=rtl] body{font-weight:500}[dir=rtl] h1,[dir=rtl] h2,[dir=rtl] .btn{font-weight:800}@media (prefers-reduced-motion:reduce){.btn{transition:none}}.board .tray{fill:var(--panel)}.board .well{fill:var(--well)}.board .x{stroke:var(--x)}.board .o{stroke:var(--o);fill:none}.board .x,.board .o{stroke-width:15px;stroke-linecap:round}.board .old{opacity:.35}[dir=rtl] ol{list-style:persian}