:root{--paper: #f6f1e7;--paper-deep: #efe7d6;--paper-note: #f3ebdc;--card: #fffcf6;--ink: #1d2733;--ink-soft: #3a4452;--muted: #58616e;--line: #e3d9c6;--line-strong: #cfc2aa;--grid-line: rgba(29, 39, 51, .07);--blue: #2f6fdb;--blue-tint: #dde7f7;--blue-ink: #1e4a96;--violet: #7a55d6;--violet-tint: #e8e0f7;--violet-ink: #4a2f9e;--mustard: #e0a100;--mustard-tint: #fbebc0;--mustard-ink: #6b4e12;--coral: #d9502e;--coral-tint: #f8dcd0;--coral-ink: #8f2c14;--green: #267b53;--green-tint: #d6eddf;--green-ink: #17482f;--red: #b3261e;--red-tint: #f9dedc;--color-primary: var(--blue);--color-primary-light: #3f7be0;--color-primary-dark: var(--blue-ink);--color-primary-glow: rgba(47, 111, 219, .22);--color-secondary: var(--violet);--color-secondary-light: #8f6fe0;--color-secondary-dark: var(--violet-ink);--color-secondary-glow: rgba(122, 85, 214, .22);--color-accent: var(--coral);--color-accent-light: #e2704f;--color-accent-dark: var(--coral-ink);--color-accent-glow: rgba(217, 80, 46, .22);--color-success: var(--green);--color-success-glow: rgba(38, 123, 83, .2);--color-warning: var(--mustard);--color-warning-glow: rgba(224, 161, 0, .22);--color-error: var(--red);--color-error-glow: rgba(179, 38, 30, .2);--color-bg-primary: var(--paper);--color-bg-secondary: var(--card);--color-bg-tertiary: var(--paper-deep);--color-bg-elevated: var(--card);--color-text-primary: var(--ink);--color-text-secondary: var(--ink-soft);--color-text-muted: var(--muted);--color-text-inverse: #ffffff;--color-border: var(--line-strong);--color-border-light: var(--line);--color-border-focus: rgba(47, 111, 219, .5);--font-sans: "Atkinson Hyperlegible", "Noto Sans Arabic", system-ui, -apple-system, "Segoe UI", sans-serif;--font-display: "Fraunces", "Noto Sans Arabic", Georgia, serif;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--text-6xl: 3.75rem;--line-height-tight: 1.2;--line-height-normal: 1.5;--line-height-relaxed: 1.7;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--shadow-sm: 0 1px 0 rgba(29, 39, 51, .08);--shadow-md: 3px 3px 0 var(--ink);--shadow-lg: 4px 4px 0 var(--ink);--shadow-xl: 5px 5px 0 var(--ink);--shadow-glow: 0 0 0 transparent;--shadow-glow-secondary: 0 0 0 transparent;--glass-bg: var(--card);--glass-bg-light: var(--paper-note);--glass-border: var(--line-strong);--glass-blur: none;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: .875rem;--radius-2xl: 1.125rem;--radius-3xl: 1.5rem;--radius-full: 9999px;--transition-fast: .12s ease;--transition-normal: .18s ease;--transition-slow: .3s ease;--transition-bounce: .4s cubic-bezier(.68, -.55, .265, 1.55);--focus-ring: 0 0 0 3px rgba(47, 111, 219, .45);--gradient-primary: linear-gradient(135deg, var(--blue) 0%, var(--blue) 100%);--gradient-accent: linear-gradient(135deg, var(--coral) 0%, var(--coral) 100%);--gradient-dark: linear-gradient(180deg, var(--paper) 0%, var(--paper) 100%);--gradient-mesh: none;--direction: ltr}:root[data-theme=classic]{--color-primary: #6366f1;--color-primary-light: #818cf8;--color-primary-dark: #4f46e5;--color-primary-glow: rgba(99, 102, 241, .4);--color-secondary: #06b6d4;--color-secondary-light: #22d3ee;--color-secondary-dark: #0891b2;--color-secondary-glow: rgba(6, 182, 212, .4);--color-accent: #f472b6;--color-accent-light: #f9a8d4;--color-accent-dark: #ec4899;--color-accent-glow: rgba(244, 114, 182, .4);--color-success: #10b981;--color-success-glow: rgba(16, 185, 129, .3);--color-warning: #f59e0b;--color-warning-glow: rgba(245, 158, 11, .3);--color-error: #ef4444;--color-error-glow: rgba(239, 68, 68, .3);--color-bg-primary: #0f172a;--color-bg-secondary: #1e293b;--color-bg-tertiary: #334155;--color-bg-elevated: rgba(30, 41, 59, .8);--color-text-primary: #ffffff;--color-text-secondary: #f1f5f9;--color-text-muted: #cbd5e1;--color-text-inverse: #f8fafc;--color-border: rgba(148, 163, 184, .2);--color-border-light: rgba(148, 163, 184, .1);--color-border-focus: rgba(99, 102, 241, .5);--font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-display: "Cal Sans", "Inter", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--text-6xl: 3.75rem;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .3);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .4), 0 2px 4px -2px rgb(0 0 0 / .4);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .4), 0 4px 6px -4px rgb(0 0 0 / .4);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .5), 0 8px 10px -6px rgb(0 0 0 / .5);--shadow-glow: 0 0 40px -10px var(--color-primary-glow);--shadow-glow-secondary: 0 0 40px -10px var(--color-secondary-glow);--glass-bg: rgba(30, 41, 59, .6);--glass-bg-light: rgba(30, 41, 59, .4);--glass-border: rgba(255, 255, 255, .1);--glass-blur: blur(20px);--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-3xl: 2rem;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1);--transition-bounce: .5s cubic-bezier(.68, -.55, .265, 1.55);--focus-ring: 0 0 0 3px var(--color-primary-glow);--gradient-primary: linear-gradient(135deg, 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ltr}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0;user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth}body{font-family:var(--font-sans);font-size:var(--text-base);line-height:var(--line-height-normal);color:var(--color-text-primary);background:var(--color-bg-primary);min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;inset:0;background:var(--gradient-mesh);pointer-events:none;z-index:-1;animation:meshMove 20s ease-in-out infinite}@keyframes meshMove{0%,to{opacity:.5;transform:scale(1)}50%{opacity:.8;transform:scale(1.1)}}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:var(--line-height-tight);color:var(--color-text-primary);letter-spacing:-.02em}h1{font-size:var(--text-5xl)}h2{font-size:var(--text-4xl)}h3{font-size:var(--text-3xl)}h4{font-size:var(--text-2xl)}h5{font-size:var(--text-xl)}h6{font-size:var(--text-lg)}p{margin-bottom:var(--space-4);color:var(--color-text-secondary)}a{color:var(--color-primary-light);text-decoration:none;transition:all var(--transition-fast);position:relative}a:after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--gradient-primary);transition:width var(--transition-normal)}a:hover{color:var(--color-text-primary)}a:hover:after{width:100%}a:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--radius-sm)}button{font-family:inherit;cursor:pointer;border:none;background:none;transition:all var(--transition-fast)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-size:var(--text-base);font-weight:600;border-radius:var(--radius-xl);transition:all var(--transition-normal);position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left var(--transition-slow)}.btn:hover:before{left:100%}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 15px -3px var(--color-primary-glow)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px -5px var(--color-primary-glow)}.btn-secondary{background:var(--glass-bg);color:var(--color-text-primary);border:1px solid var(--glass-border);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur)}.btn-secondary:hover{background:var(--glass-bg-light);border-color:var(--color-primary-light);transform:translateY(-2px)}.btn-accent{background:var(--gradient-accent);color:#fff;box-shadow:0 4px 15px -3px var(--color-accent-glow)}.btn-accent:hover{transform:translateY(-2px);box-shadow:0 8px 25px -5px var(--color-accent-glow)}.btn:focus-visible{outline:none;box-shadow:var(--focus-ring)}input,select,textarea{font-family:inherit;font-size:inherit;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:var(--space-3) var(--space-4);color:var(--color-text-primary);transition:all var(--transition-fast)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--color-primary-light);box-shadow:0 0 0 3px var(--color-primary-glow)}input::placeholder{color:var(--color-text-muted)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 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infinite}.stagger-1{animation-delay:.1s}.stagger-2{animation-delay:.2s}.stagger-3{animation-delay:.3s}.stagger-4{animation-delay:.4s}.stagger-5{animation-delay:.5s}.math-display{font-family:var(--font-mono);font-size:var(--text-lg)}.fraction{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;font-family:var(--font-mono);font-weight:600}.fraction .numerator,.fraction .denominator{padding:0 var(--space-2)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-secondary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb{background:var(--color-bg-tertiary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-primary-light)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}body:before{animation:none}}[dir=rtl]{--direction: rtl}[dir=rtl] .rtl-flip{transform:scaleX(-1)}@media(max-width:768px){h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}.glass-card{padding:var(--space-4)}}:where(html:not([data-theme=classic])) body{color:var(--ink);background:var(--paper);font-family:var(--font-sans);font-size:17px}:where(html:not([data-theme=classic])) body:before{content:none}:where(html:not([data-theme=classic])) :is(h1,h2,h3,h4){font-family:var(--font-display);font-weight:600;letter-spacing:-.015em}:where(html:not([data-theme=classic])[dir=rtl]) :is(h1,h2,h3,h4){letter-spacing:0}:where(html:not([data-theme=classic])) a{color:var(--blue-ink)}:where(html:not([data-theme=classic])) a:hover{color:var(--ink)}:where(html:not([data-theme=classic])) a:after{content:none}:where(html:not([data-theme=classic])) :focus-visible{outline:3px solid var(--blue);outline-offset:2px}:where(html:not([data-theme=classic])) :is(input,select,textarea){border:1.5px solid var(--line-strong);color:var(--ink);background:var(--card)}:where(html:not([data-theme=classic])) :is(input,select,textarea):focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-tint)}:where(html:not([data-theme=classic])) ::-webkit-scrollbar-track{background:var(--paper-deep)}:where(html:not([data-theme=classic])) ::-webkit-scrollbar-thumb{background:var(--line-strong)}:where(html:not([data-theme=classic])) ::selection{background:var(--mustard-tint)}:root:not([data-theme=classic]) .gradient-text,:root:not([data-theme=classic]) .gradient-text-accent{background:none;-webkit-text-fill-color:currentColor}:root:not([data-theme=classic]) .gradient-text{color:var(--blue-ink)}:root:not([data-theme=classic]) .gradient-text-accent{color:var(--coral-ink)}:root:not([data-theme=classic]) .glass,:root:not([data-theme=classic]) .glass-card{border:1.5px solid var(--line);background:var(--card);backdrop-filter:none;-webkit-backdrop-filter:none}:root:not([data-theme=classic]) .glass-card:hover{border-color:var(--ink);box-shadow:4px 4px 0 var(--ink);transform:translate(-2px,-2px)}:root:not([data-theme=classic]) .btn{min-height:48px;padding:12px 22px;border:2px solid var(--ink);border-radius:14px;font-weight:700;transition:transform .12s ease,box-shadow .12s ease,background-color .12s ease}:root:not([data-theme=classic]) .btn:before{content:none}:root:not([data-theme=classic]) .btn-primary{color:var(--paper);background:var(--ink);box-shadow:4px 4px 0 var(--mustard)}:root:not([data-theme=classic]) .btn-primary:hover{color:var(--paper);box-shadow:5px 5px 0 var(--mustard);transform:translate(-1px,-1px)}:root:not([data-theme=classic]) .btn-secondary{color:var(--ink);background:var(--card);-webkit-backdrop-filter:none;backdrop-filter:none}:root:not([data-theme=classic]) .btn-secondary:hover{border-color:var(--ink);color:var(--ink);background:var(--paper-deep);transform:none}:root:not([data-theme=classic]) .btn-accent{color:#fff;background:var(--coral);box-shadow:3px 3px 0 var(--ink)}:root:not([data-theme=classic]) .btn-accent:hover{color:#fff;box-shadow:4px 4px 0 var(--ink);transform:translate(-1px,-1px)}:root:not([data-theme=classic]) :is(.btn-primary,.btn-accent):active{box-shadow:1px 1px 0 var(--ink);transform:translate(2px,2px)}:root:not([data-theme=classic]) .layout-header{border-bottom:1.5px solid var(--line);border-radius:0;background:#f6f1e7f5;backdrop-filter:none;-webkit-backdrop-filter:none}:root:not([data-theme=classic]) .header-content{gap:24px;min-height:72px;padding:10px clamp(16px,4vw,56px);max-width:none}:root:not([data-theme=classic]) .logo{gap:10px;color:var(--ink)}.logo-mark{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));width:32px;height:32px;overflow:hidden;border:2px solid var(--ink);border-radius:9px;transform:rotate(-4deg)}.logo-mark span:nth-child(1){background:var(--blue)}.logo-mark span:nth-child(2){background:var(--mustard)}.logo-mark span:nth-child(3){background:var(--coral)}.logo-mark span:nth-child(4){background:var(--ink)}:root:not([data-theme=classic]) .logo-text{color:var(--ink);font-family:var(--font-display);font-size:23px;font-weight:700;letter-spacing:-.01em}:root:not([data-theme=classic]) .nav-link{min-height:40px;padding:8px 14px;border-radius:999px;color:var(--ink-soft);font-size:15px;font-weight:600}:root:not([data-theme=classic]) .nav-link:hover{color:var(--ink);background:var(--paper-deep)}:root:not([data-theme=classic]) .nav-link.active{color:var(--paper);background:var(--ink);box-shadow:none}:root:not([data-theme=classic]) .nav-home{border:1.5px solid var(--ink);background:var(--card)}:root:not([data-theme=classic]) .nav-back{color:var(--muted)}:root:not([data-theme=classic]) .nav-separator{color:var(--line-strong);opacity:1}:root:not([data-theme=classic]) .nav-section.active{color:var(--ink);background:transparent;box-shadow:inset 0 -4px 0 var(--coral);border-radius:0}:root:not([data-theme=classic]) .dropdown-toggle.open{color:var(--ink);background:var(--paper-deep)}:root:not([data-theme=classic]) .dropdown-menu{border:2px solid var(--ink);border-radius:14px;background:var(--card);box-shadow:4px 4px 0 var(--ink)}:root:not([data-theme=classic]) .dropdown-item{color:var(--ink-soft);font-size:15px}:root:not([data-theme=classic]) .dropdown-item:hover{color:var(--ink);background:var(--paper-deep)}:root:not([data-theme=classic]) .dropdown-item.active{color:var(--paper);background:var(--ink)}:root:not([data-theme=classic]) .coming-soon-badge{color:var(--mustard-ink);background:var(--mustard-tint)}:root:not([data-theme=classic]) .language-selector{gap:2px;padding:3px;border:1.5px solid var(--ink);border-radius:999px;background:var(--card)}:root:not([data-theme=classic]) .language-selector button{min-width:40px;min-height:32px;padding:4px 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h3{margin-bottom:var(--space-3);color:var(--color-primary)}.principle-card ul{list-style:none;padding:0}.principle-card li{padding:var(--space-2) 0;padding-left:var(--space-5);position:relative;color:var(--color-text-secondary);font-size:var(--text-sm)}.principle-card li:before{content:"•";position:absolute;left:var(--space-2);color:var(--color-primary);font-weight:700}.wcag-checklist{display:flex;flex-direction:column;gap:var(--space-3)}.checklist-item{display:flex;align-items:flex-start;gap:var(--space-3);padding:var(--space-4);background:var(--color-bg-primary);border-radius:var(--radius-lg)}.check-icon{color:var(--color-success);font-weight:700;flex-shrink:0}.feature-list{list-style:none;padding:0;display:grid;gap:var(--space-3)}.feature-list li{padding:var(--space-3) var(--space-4);background:var(--color-bg-primary);border-radius:var(--radius-lg);border-left:4px solid var(--color-primary)}.keyboard-table{width:100%;border-collapse:collapse;margin-top:var(--space-4);background:var(--color-bg-primary);border-radius:var(--radius-lg);overflow:hidden}.keyboard-table th,.keyboard-table td{padding:var(--space-3) var(--space-4);text-align:left;border-bottom:1px solid var(--color-border)}.keyboard-table th{background:var(--color-bg-tertiary);font-weight:600;color:var(--color-text-primary)}.keyboard-table td{color:var(--color-text-secondary)}.keyboard-table tr:last-child td{border-bottom:none}kbd{display:inline-block;padding:var(--space-1) var(--space-2);font-family:var(--font-mono);font-size:var(--text-sm);background:var(--color-bg-tertiary);border:1px solid var(--color-border);border-radius:var(--radius-sm);box-shadow:0 2px 0 var(--color-border)}@media(max-width:640px){.dua-section,.wcag-section,.multilingual-section,.keyboard-section,.contact-section{padding:var(--space-4)}.keyboard-table{font-size:var(--text-sm)}.keyboard-table th,.keyboard-table td{padding:var(--space-2)}}.route-error{display:flex;justify-content:center;padding:var(--space-12) var(--space-4)}.route-error-card{max-width:520px;padding:var(--space-8);border-radius:24px;text-align:center}.route-error-icon{display:block;font-size:3rem;margin-bottom:var(--space-4)}.route-error-card h1{margin:0 0 var(--space-3);font-size:clamp(1.5rem,4vw,2rem)}.route-error-card p{margin:0 0 var(--space-6);color:var(--color-text-muted)}.route-error-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--space-3)}.route-error-button{padding:var(--space-3) var(--space-6);border:1px solid var(--color-border);border-radius:999px;background:transparent;color:var(--color-text-primary);font:inherit;font-weight:600;text-decoration:none;cursor:pointer}.route-error-button.primary{border-color:transparent;background:var(--color-primary)}.route-error-button:hover,.route-error-button:focus-visible{border-color:var(--color-primary-light)}