:root{--font-family:Inter,system-ui,-apple-system,sans-serif;--font-size:16px;--line-height:1.6;--color-primary:#2563eb;--color-primary-dark:#1d4ed8;--color-secondary:#64748b;--color-accent:#f59e0b;--color-success:#10b981;--color-danger:#ef4444;--color-warning:#f59e0b;--color-bg:#ffffff;--color-bg-secondary:#f8fafc;--color-bg-dark:#1e293b;--color-text:#1e293b;--color-text-secondary:#64748b;--color-text-light:#94a3b8;--color-border:#e2e8f0;--color-border-light:#f1f5f9;--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:3rem;--radius-sm:0.375rem;--radius-md:0.5rem;--radius-lg:0.75rem;--radius-xl:1rem;--shadow-sm:0 1px 2px 0 rgb(0 0 0 / 0.05);--shadow-md:0 4px 6px -1px rgb(0 0 0 / 0.1),0 2px 4px -2px rgb(0 0 0 / 0.1);--shadow-lg:0 10px 15px -3px rgb(0 0 0 / 0.1),0 4px 6px -4px rgb(0 0 0 / 0.1);--shadow-xl:0 20px 25px -5px rgb(0 0 0 / 0.1),0 8px 10px -6px rgb(0 0 0 / 0.1);--transition:all 0.2s ease-in-out;--font-family-default:'Inter',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;--font-family-mono:ui-monospace,'SFMono-Regular','Consolas','Liberation Mono','Menlo',monospace;--font-family-serif:Georgia,'Times New Roman',serif;--ctl-h:36px}[data-theme=dark]{--color-primary:#3b82f6;--color-primary-dark:#2563eb;--color-secondary:#94a3b8;--color-accent:#fbbf24;--color-success:#34d399;--color-danger:#f87171;--color-warning:#fbbf24;--color-bg:#0f172a;--color-bg-secondary:#1e293b;--color-bg-dark:#334155;--color-text:#f8fafc;--color-text-secondary:#e2e8f0;--color-text-light:#cbd5e1;--color-border:#334155;--color-border-light:#475569;--shadow-sm:0 1px 2px 0 rgb(0 0 0 / 0.3);--shadow-md:0 4px 6px -1px rgb(0 0 0 / 0.4),0 2px 4px -2px rgb(0 0 0 / 0.3);--shadow-lg:0 10px 15px -3px rgb(0 0 0 / 0.4),0 4px 6px -4px rgb(0 0 0 / 0.3);--shadow-xl:0 20px 25px -5px rgb(0 0 0 / 0.4),0 8px 10px -6px rgb(0 0 0 / 0.3)}[data-theme=dark] .home-hero,[data-theme=dark] .home-hero 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div:not([class*=card]):not([class*=article]):not([class*=btn]):not([class*=button]):not([class*=link]):not([class*=home-hero]):not([class*=hero]):not([class*=image]):not([class*=img]) div,[data-theme=dark] .main-content div:not([class*=card]):not([class*=article]):not([class*=btn]):not([class*=button]):not([class*=link]):not([class*=home-hero]):not([class*=hero]):not([class*=image]):not([class*=img]) p,[data-theme=dark] .main-content div:not([class*=card]):not([class*=article]):not([class*=btn]):not([class*=button]):not([class*=link]):not([class*=home-hero]):not([class*=hero]):not([class*=image]):not([class*=img]) span,[data-theme=dark] .main-content p,[data-theme=dark] .main-content>div>div>p,[data-theme=dark] .main-content>div>p{color:var(--color-text,#f8fafc)!important}[data-theme=dark] .about-text,[data-theme=dark] .article-excerpt,[data-theme=dark] .article-meta,[data-theme=dark] .page-subtitle{color:var(--color-text-secondary,#e2e8f0)}[data-theme=dark] 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#e2e8f0!important;border-top:1px solid #e2e8f0!important;background:#fff!important;display:none!important;visibility:hidden!important;opacity:0!important}.language-dropdown-content.show{display:block!important;visibility:visible!important;opacity:1!important}.lang-option{text-align:left!important;padding:.5rem .75rem!important;font-size:.875rem!important;min-height:auto!important;min-width:auto!important;display:block!important;align-items:normal!important;justify-content:normal!important;border-bottom:1px solid #e2e8f0!important;visibility:visible!important;opacity:1!important}.lang-option:last-child{border-bottom:none!important}.page-title{font-size:2rem}.articles-grid{grid-template-columns:1fr;gap:var(--spacing-lg);width:100%;max-width:100%}.article-card{width:100%;max-width:100%;margin:0}.article-content{padding:var(--spacing-md)}.article-title a{font-size:1.125rem;word-wrap:break-word;overflow-wrap:break-word}.article-excerpt{font-size:.875rem;word-wrap:break-word;overflow-wrap:break-word}.nav-dropdown-content{min-width:150px}.container{padding:0 var(--spacing-md)}}@media (max-width:480px){.site-header{padding:var(--spacing-xs) 0}.main-nav{gap:var(--spacing-sm)}.nav-left .logo{font-size:1.25rem}.nav-links .nav-link{padding:var(--spacing-md) var(--spacing-lg);min-height:44px;font-size:.875rem;display:flex;align-items:center;justify-content:center}.lang-dropdown-btn{padding:var(--spacing-md) var(--spacing-lg);min-height:44px;font-size:.875rem}.lang-option{padding:var(--spacing-md) var(--spacing-lg);font-size:.875rem;min-height:44px;min-width:44px}.container{padding:0 var(--spacing-sm)}.page-title{font-size:1.75rem}.nav-dropdown-btn{padding:var(--spacing-md) var(--spacing-lg);min-height:44px;min-width:44px;font-size:.875rem}.articles-grid{gap:var(--spacing-md);padding:0 var(--spacing-xs)}.article-card{border-radius:var(--radius-md)}.article-image{height:220px!important}.article-image img{object-position:center top!important}.article-content{padding:var(--spacing-sm)}.article-title a{font-size:1rem}.article-excerpt{font-size:.8rem}}@media (min-width:769px) and (max-width:1024px){.main-nav,.nav-right{gap:var(--spacing-md)}.language-switcher{gap:var(--spacing-xs)}.lang-dropdown-btn{padding:var(--spacing-xs) var(--spacing-sm);font-size:.875rem;min-width:100px}.lang-option{padding:var(--spacing-xs) var(--spacing-sm);font-size:.875rem;min-height:36px}.articles-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-lg)}.article-card{max-width:100%}.article-content{padding:var(--spacing-md)}.article-title a{font-size:1.125rem}.article-excerpt{font-size:.9rem}}.reading-progress{position:fixed;top:0;left:0;height:3px;background:var(--color-primary,#2563eb);width:0%;z-index:10000;transition:width .1s ease-out;box-shadow:0 2px 4px rgba(37,99,235,.3)}.hero-images{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:1rem;margin:1rem auto;max-width:900px;padding:0 1rem}.hero-images .hero-image{flex:1 1 280px;max-width:450px;margin:0}.hero-image{text-align:center;padding:0 1rem;justify-content:center;align-items:center}.hero-image img{max-width:min(400px,90%);width:auto;height:auto;display:block;margin:0 auto;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.1)}.hero-images .hero-image img{max-width:100%}.home-hero-collapsible{margin-bottom:1rem;text-align:center}.home-hero-collapsible__summary{cursor:pointer;list-style:none;font-weight:700;font-size:1.25rem;padding:.5rem 0;user-select:none}.home-hero-collapsible__summary::-webkit-details-marker{display:none}.home-hero-collapsible__summary::before{content:'▶ ';display:inline-block;margin-right:.35rem;transition:transform .2s}[dir=rtl] .home-hero-collapsible__summary::before{content:' ◀';margin-right:0;margin-left:.35rem}.home-hero-collapsible[open] .home-hero-collapsible__summary::before{transform:rotate(90deg)}[dir=rtl] .home-hero-collapsible[open] .home-hero-collapsible__summary::before{transform:rotate(-90deg)}.home-hero{padding:3rem 2rem;max-width:900px;border:none;border-radius:12px;background:var(--color-bg,#fff);color:var(--color-text,#1a202c);box-shadow:var(--shadow-sm,0 2px 8px rgba(0,0,0,.05));position:relative;overflow:hidden}.home-hero::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--color-primary,#2563eb),var(--color-primary-dark,#1d4ed8),var(--color-primary,#2563eb));background-size:200% 100%;animation:3s infinite gradientShift}@keyframes gradientShift{0%,100%{background-position:0 50%}50%{background-position:100% 50%}}.home-hero h1{font-size:clamp(2rem, 5vw, 3rem);margin:0 0 1.5rem;line-height:1.3;color:var(--color-text,#1a202c);font-weight:800;letter-spacing:-.02em;text-align:left}.home-hero h2{font-size:clamp(1.25rem, 3vw, 1.75rem);margin:2rem 0 1rem;line-height:1.4;color:var(--color-text,#1a202c);font-weight:700;text-align:left}.home-hero h3{font-size:clamp(1.125rem, 2.5vw, 1.5rem);margin:1.5rem 0 .75rem;line-height:1.4;color:var(--color-text,#1a202c);font-weight:600;text-align:left}.home-hero p{font-size:clamp(1rem, 2vw, 1.125rem);margin:1.25rem 0;color:var(--color-text,#1a202c);line-height:1.8;max-width:100%;text-align:justify;text-justify:inter-word}.home-hero ul{text-align:left;margin:1.5rem 0;padding-left:1.5rem;max-width:100%}.home-hero li{margin-bottom:.875rem;line-height:1.8;color:var(--color-text,#1a202c);font-size:clamp(1rem, 2vw, 1.125rem)}.home-hero li strong{color:var(--color-text,#1a202c);font-weight:600}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem;padding:3rem 1.5rem;max-width:1400px;margin:0 auto}.section-title{text-align:center;font-size:clamp(1.75rem, 4vw, 2.5rem);font-weight:800;color:var(--color-text,#1a202c);margin:0 auto 3rem;padding-bottom:1rem;border-bottom:3px solid var(--color-primary,#2563eb);max-width:800px;position:relative;letter-spacing:-.02em;background:linear-gradient(135deg,var(--color-text,#1a202c) 0,var(--color-text-secondary,#64748b) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;transition:.3s}.section-title:hover{transform:scale(1.02)}@supports not (-webkit-background-clip:text){.section-title{background:0 0;-webkit-text-fill-color:var(--color-text,#1a202c);color:var(--color-text,#1a202c)}}.card{flex-direction:column;background:var(--color-bg,#fff);border:1px solid var(--color-border,#e0e0e0);overflow:hidden;color:var(--color-text,#1a202c);transition:transform .3s cubic-bezier(.4, 0, .2, 1),box-shadow .3s cubic-bezier(.4, 0, .2, 1),background-color .3s,color .3s,border-color .3s;box-shadow:var(--shadow-sm,0 2px 8px 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(max-width:768px){.article-content{padding:1rem}.article-title{font-size:2rem;line-height:1.3}.article-body{font-size:1rem}.article-body h1{font-size:1.75rem;margin:2rem 0 1rem}.article-body h2{font-size:1.5rem;margin:2rem 0 1rem}.article-body h3{font-size:1.25rem;margin:1.5rem 0 .75rem}.article-body h4{font-size:1.125rem}.article-body p{margin-bottom:1.25rem}.article-body center img,.article-body div img,.article-body img{margin:1.5rem auto}.article-navigation{margin-top:3rem;padding-top:2rem}.nav-links-list{grid-template-columns:1fr;gap:.75rem}.nav-links-list li{padding:.875rem;min-height:44px}.nav-links-list a{min-height:44px;padding:var(--spacing-sm) 0}.nav-title{font-size:1.25rem}}@media (max-width:480px){.article-content{padding:1rem .5rem}.article-title{font-size:1.75rem}.article-body{font-size:.95rem}.article-body h1{font-size:1.5rem}.article-body h2{font-size:1.25rem}.article-body h3{font-size:1.125rem}.article-body p{text-align:left;margin-bottom:1rem}[dir=rtl] .article-body p{text-align:right}.article-body ol,.article-body ul{padding-left:1.5rem;margin:1rem 0}[dir=rtl] .article-body ol,[dir=rtl] .article-body ul{padding-right:1.5rem;padding-left:0}.article-body img{margin:1rem auto;border-radius:var(--radius-sm,.375rem)}.article-navigation{margin-top:2rem;padding-top:1.5rem}.article-navigation .cards{grid-template-columns:1fr}.nav-links-list{gap:.5rem}.nav-links-list li{padding:.75rem;min-height:44px}.nav-links-list a{min-height:44px;padding:var(--spacing-sm) 0}.nav-title{font-size:1.125rem}.article-body blockquote{padding-left:1rem;padding-right:.75rem}[dir=rtl] .article-body blockquote{padding-right:1rem;padding-left:.75rem}.article-body table{font-size:.85em}.article-body table td,.article-body table th{padding:.5rem}}@media print{.article-content{max-width:100%;padding:0}.article-navigation{display:none}.article-body{font-size:12pt;line-height:1.6}.article-body img{max-width:100%;page-break-inside:avoid}.article-body a{color:#000;text-decoration:underline}.article-body a[href^=http]:after{content:" (" attr(href) ")";font-size:.8em;color:#666}}.main-content{max-width:1100px;margin:0 auto;padding:1rem}@media (max-width:768px){.main-content{padding-top:calc(1rem + 70px)}}@media (max-width:480px){.main-content{padding-top:calc(.75rem + 65px)}}.home-hero{text-align:left;margin:.5rem 0 1.5rem}[dir=rtl] .home-hero{direction:rtl;text-align:center}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem;align-items:start}.card{display:block;background:var(--color-bg,#fff);border:1px solid var(--color-border,#e2e8f0);border-radius:.75rem;padding:1rem;text-decoration:none;color:var(--color-text,#1a202c);box-shadow:var(--shadow-sm,0 2px 8px rgba(0,0,0,.05));transition:var(--transition, transform .2s ease, box-shadow .2s ease);align-self:start}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md,0 6px 18px 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1);opacity:0;visibility:hidden;transform:translateY(20px)}.scroll-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}.scroll-to-top:hover{background:var(--color-primary-dark,#1d4ed8);transform:translateY(-4px) scale(1.05);box-shadow:0 6px 16px rgba(37,99,235,.5),0 12px 32px rgba(37,99,235,.3)}.scroll-to-top:active{transform:translateY(-2px) scale(1.02)}.scroll-to-top svg{width:24px;height:24px;fill:currentColor}[data-theme=dark] .scroll-to-top{background:var(--color-primary,#3b82f6);box-shadow:0 4px 12px rgba(59,130,246,.4),0 8px 24px rgba(59,130,246,.2)}[data-theme=dark] .scroll-to-top:hover{background:var(--color-primary-dark,#2563eb)}@media (max-width:768px){.share-fab{right:16px;bottom:16px;width:56px;height:56px}.share-fab svg{width:20px;height:20px}.scroll-to-top{right:16px;bottom:80px;width:52px;height:52px}.scroll-to-top svg{width:20px;height:20px}}@media (max-width:480px){.share-fab{right:12px;bottom:12px;width:52px;height:52px}.share-fab svg{width:18px;height:18px}.scroll-to-top{right:12px;bottom:70px;width:48px;height:48px}.scroll-to-top svg{width:18px;height:18px}}.hero-image-container{width:100%;max-width:800px;margin:0 auto var(--spacing-xl);text-align:center;overflow:hidden;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}.hero-image{max-width:600px;width:100%;height:auto;display:block;margin:0 auto;border-radius:var(--radius-md);box-shadow:var(--shadow-md);transition:var(--transition)}.skip-link{position:absolute;top:-40px;left:0;background:var(--color-primary,#1a202c);color:#fff;padding:8px;text-decoration:none;z-index:10000}.skip-link:focus{top:0}.share-menu{position:fixed;z-index:2001;opacity:0;visibility:hidden;transform:translateY(10px);transition:.2s}.share-menu.show{opacity:1;visibility:visible;transform:translateY(0)}.share-menu-content{background:var(--color-bg,#fff);border:1px solid var(--color-border,#e2e8f0);border-radius:.5rem;box-shadow:0 4px 12px 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.logo{font-size:1.5rem;font-weight:700;color:var(--color-text,#1a202c);text-decoration:none;white-space:nowrap}.nav-actions{display:flex;align-items:center;gap:.5rem;flex-wrap:nowrap}.nav-link.home-btn{height:var(--ctl-h);padding:0 .8rem;display:flex;align-items:center;justify-content:center;background:var(--color-bg-secondary,#f7fafc);border:1px solid var(--color-border,#e2e8f0);border-radius:.375rem;color:var(--color-text-secondary,#4a5568);text-decoration:none;font-weight:500;transition:.2s;white-space:nowrap}.nav-link.home-btn:hover{background:var(--color-border-light,#edf2f7);border-color:var(--color-border,#cbd5e0)}.theme-toggle-btn{height:var(--ctl-h);width:var(--ctl-h);padding:0;display:flex;align-items:center;justify-content:center;background:var(--color-bg-secondary,#f7fafc);border:1px solid var(--color-border,#e2e8f0);border-radius:.375rem;color:var(--color-text,#4a5568);cursor:pointer;font-size:1.2rem;transition:.2s;-webkit-tap-highlight-color:transparent;touch-action:manipulation;user-select:none;flex-shrink:0}.theme-toggle-btn:hover{background:var(--color-border-light,#edf2f7);border-color:var(--color-border,#cbd5e0)}.theme-icon{display:inline-block;transition:transform .3s}.theme-toggle-btn:hover .theme-icon{transform:rotate(15deg)}[data-theme=dark] .theme-toggle-btn{background:var(--color-bg-secondary,#1e293b);border-color:var(--color-border,#334155);color:var(--color-text,#f1f5f9)}[data-theme=dark] .theme-toggle-btn:hover{background:var(--color-bg-dark,#334155);border-color:var(--color-border-light,#475569)}.language-switcher{position:relative}.lang-dropdown-btn{height:var(--ctl-h);padding:0 .7rem;display:flex;align-items:center;justify-content:center;background:var(--color-bg,#fff);border:1px solid var(--color-border,#e2e8f0);border-radius:.375rem;color:var(--color-text,#000);cursor:pointer;font-size:.875rem;font-weight:500;gap:.25rem;white-space:nowrap;-webkit-tap-highlight-color:transparent;touch-action:manipulation;user-select:none;position:relative;z-index:1;pointer-events:auto!important;transition:var(--transition, all .2s ease-in-out)}.lang-dropdown-btn:hover{background:var(--color-bg-secondary,#edf2f7);border-color:var(--color-border,#cbd5e0)}.current-lang{pointer-events:none}.dropdown-arrow{font-size:.75rem;transition:transform .2s;pointer-events:none}.lang-dropdown-btn:hover .dropdown-arrow{transform:rotate(180deg)}.language-dropdown-content{position:absolute!important;top:100%!important;right:0!important;background:var(--color-bg,#fff)!important;border:1px solid var(--color-border,#e2e8f0)!important;border-radius:.375rem!important;box-shadow:var(--shadow-md,0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px 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var(--color-border,#e2e8f0)!important;text-align:left!important;cursor:pointer!important;font-size:.875rem!important;color:var(--color-text,#000)!important;-webkit-tap-highlight-color:transparent;touch-action:manipulation;user-select:none;display:block!important;visibility:visible!important;opacity:1!important;position:relative!important;z-index:1;transition:var(--transition, background-color .15s ease)}.lang-option:last-child{border-bottom:none!important}.lang-option:hover{background:var(--color-bg-secondary,#f7fafc)!important}.lang-option:active{background:var(--color-border-light,#edf2f7)!important}@media (max-width:768px){:root{--ctl-h:40px}.site-header{padding:.5rem 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.logo{font-size:1.5rem!important;width:100%!important;text-align:left!important}.lang-dropdown-btn,.nav-link.home-btn,.theme-toggle-btn{min-height:44px;height:var(--ctl-h)}.theme-toggle-btn{width:var(--ctl-h);min-width:var(--ctl-h)}.main-content{padding-top:1rem}.container,.main-nav,.nav-actions,.site-header{overflow:visible!important}.language-switcher{position:relative!important;z-index:10000!important;overflow:visible!important}.lang-dropdown-btn{position:relative!important;z-index:10001!important}.language-dropdown-content{z-index:10002!important;position:absolute!important;display:none!important;pointer-events:auto!important;visibility:hidden!important;opacity:0!important;transform:none!important;top:100%!important;right:0!important;left:auto!important;background:var(--color-bg,#fff)!important;border:1px solid var(--color-border,#e2e8f0)!important;border-radius:.375rem!important;box-shadow:var(--shadow-md,0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px 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(max-width:480px){:root{--ctl-h:40px}.site-header{padding:.5rem 0!important}.main-nav{flex-direction:column!important;gap:.5rem!important}.nav-left .logo{font-size:1.3rem!important;width:100%!important;text-align:left!important}.nav-actions{gap:.5rem!important;width:100%!important}.lang-dropdown-btn,.nav-link.home-btn,.theme-toggle-btn{min-height:40px;height:40px}.theme-toggle-btn{width:40px;min-width:40px}}[dir=rtl] .language-dropdown-content{right:auto;left:0}[dir=rtl] .lang-option{text-align:right}