:root{--bg:#f6f4f1;--surface:#fff;--ink:#1c1814;--muted:#6e655d;--line:#e8e2da;--soft:#f1ece6;--accent:#c2412a;--accent-ink:#fff;--hero:#1f1a16;--hero-ink:#fbf7f2;--hero-muted:#bdb1a6;--good:#1f7a50;--warn:#9a5b0e;--bad:#b42f27;--k-basic:#3b5fc4;--k-math:#58701f;--k-money:#c2412a;--k-health:#ae2667;--k-time:#1b7769;--k-convert:#7449bd;--k-work:#97590e;--k-chem:#0e6f8c;--k-phys:#4b5563;--shadow:0 1px 2px #28190a0f,0 4px 14px #28190a0f;--shadow-lift:0 2px 4px #28190a14,0 14px 30px #28190a1f;--f-display:"Readex Pro","IBM Plex Sans Arabic",system-ui,sans-serif;--f-body:"IBM Plex Sans Arabic",system-ui,"Segoe UI",Tahoma,sans-serif;--f-num:"Readex Pro",system-ui,"Segoe UI",sans-serif;--r-card:20px;--r-ctl:12px}html[lang=en]{--f-body:"IBM Plex Sans",system-ui,"Segoe UI",Roboto,sans-serif}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#141110;--surface:#1e1a17;--ink:#f4eee8;--muted:#aba096;--line:#322b26;--soft:#28221e;--accent:#ff8466;--accent-ink:#2a0d06;--hero:#26201b;--hero-ink:#fbf7f2;--hero-muted:#b5a99e;--good:#5cc48a;--warn:#e8b04e;--bad:#f07a70;--shadow:0 1px 2px #0000004d;--shadow-lift:0 10px 28px #00000073;--lightningcss-light: ;--lightningcss-dark:initial;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--bg:#141110;--surface:#1e1a17;--ink:#f4eee8;--muted:#aba096;--line:#322b26;--soft:#28221e;--accent:#ff8466;--accent-ink:#2a0d06;--hero:#26201b;--hero-ink:#fbf7f2;--hero-muted:#b5a99e;--good:#5cc48a;--warn:#e8b04e;--bad:#f07a70;--shadow:0 1px 2px #0000004d;--shadow-lift:0 10px 28px #00000073;--lightningcss-light: ;--lightningcss-dark:initial;--lightningcss-light: 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h2{font-family:var(--f-display);text-wrap:balance;letter-spacing:-.01em;margin:0 0 8px;font-size:clamp(1.6rem,3.6vw,2.5rem);font-weight:700;line-height:1.2}.hero p{color:var(--hero-muted);max-width:52ch;margin:0}.stats{flex-wrap:wrap;gap:8px;margin-top:18px;display:flex}.stats span{color:var(--hero-ink);border:1px solid #ffffff24;border-radius:999px;align-items:center;gap:6px;padding:4px 12px;font-size:.84rem;display:inline-flex}.stats b{font-family:var(--f-num);font-weight:600}.pad{direction:ltr;grid-template-columns:repeat(4,1fr);justify-self:end;gap:10px;max-width:290px;display:grid;transform:rotate(-6deg)}.pad i{aspect-ratio:1;font-style:normal;font-family:var(--f-num);color:#ffffff8c;background:#ffffff12;border-radius:14px;place-items:center;font-size:1.15rem;font-weight:600;display:grid}.pad i.c{background:var(--cc);color:#fff;box-shadow:0 6px 16px #00000040}.quick{margin-bottom:26px}.quick h3,.grp h3,.related h3{font-family:var(--f-display);align-items:center;gap:10px;margin:0 0 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auto;padding:26px}.crumbs{color:var(--muted);flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:14px;font-size:.88rem;display:flex}.crumbs button{color:var(--muted);cursor:pointer;text-decoration:underline;-webkit-text-decoration-color:var(--line);-webkit-text-decoration-color:var(--line);text-decoration-color:var(--line);text-underline-offset:4px;background:0 0;border:0;padding:0}.crumbs button:hover{color:var(--ink)}.crumbs .sep{opacity:.5}.panel{--cc:var(--accent);background:var(--surface);border:1px solid var(--line);min-width:0;box-shadow:var(--shadow);border-radius:24px;padding:clamp(18px,3vw,30px)}.ph{border-bottom:1px solid var(--line);align-items:center;gap:16px;margin-bottom:22px;padding-bottom:20px;display:flex}.ph .ico{background:var(--cc);color:#fff;width:58px;height:58px;box-shadow:0 8px 18px color-mix(in srgb,var(--cc) 35%,transparent);border-radius:17px;flex:none;place-items:center;display:grid}.ph .tt{flex:1;min-width:0}.back{display:none}.fav{border:1px solid 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