:root{--color-primary:hsl(210,85%,58%);--color-primary-dark:hsl(210,85%,45%);--color-primary-light:hsl(210,85%,70%);--color-secondary:hsl(280,60%,60%);--color-accent:hsl(340,75%,55%);--color-bg:hsl(210,20%,98%);--color-surface:hsl(0,0%,100%);--color-border:hsl(210,15%,90%);--color-text-primary:hsl(220,15%,20%);--color-text-secondary:hsl(220,10%,45%);--color-text-tertiary:hsl(220,8%,60%);--color-reading-bg:hsl(45,30%,97%);--color-code-bg:hsl(220,20%,14%);--color-code-inline:hsl(210,15%,95%);--color-success:hsl(142,71%,45%);--color-error:hsl(4,86%,58%);--color-warning:hsl(45,93%,51%);--color-info:hsl(199,89%,48%);--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:3rem;--spacing-3xl:4rem;--font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-mono:"Fira Code","Courier New",monospace;--font-size-xs:0.75rem;--font-size-sm:0.875rem;--font-size-base:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--font-size-3xl:1.875rem;--font-size-4xl:2.25rem;--line-height-tight:1.25;--line-height-normal:1.5;--line-height-relaxed:1.7;--line-height-loose:2;--max-width-content:700px;--max-width-reading:65ch;--max-width-container:1200px;--radius-sm:0.25rem;--radius-md:0.5rem;--radius-lg:0.75rem;--radius-xl:1rem;--radius-full:9999px;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -1px rgba(0,0,0,0.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05);--shadow-xl:0 20px 25px -5px rgba(0,0,0,0.1),0 10px 10px -5px rgba(0,0,0,0.04);--transition-fast:150ms ease-in-out;--transition-base:250ms ease-in-out;--transition-slow:350ms ease-in-out}[data-theme=dark]{--color-bg:hsl(220,15%,10%);--color-surface:hsl(220,15%,14%);--color-border:hsl(220,15%,25%);--color-text-primary:hsl(210,20%,95%);--color-text-secondary:hsl(210,15%,75%);--color-text-tertiary:hsl(210,10%,55%);--color-reading-bg:hsl(220,15%,12%);--color-code-bg:hsl(220,20%,8%);--color-code-inline:hsl(220,15%,20%);--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.3);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.4),0 2px 4px -1px rgba(0,0,0,0.3);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.5),0 4px 6px -2px rgba(0,0,0,0.4);--shadow-xl:0 20px 25px -5px rgba(0,0,0,0.6),0 10px 10px -5px rgba(0,0,0,0.5)}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);font-size:var(--font-size-base);line-height:var(--line-height-normal);background-color:var(--color-bg);transition:background-color var(--transition-base),color var(--transition-base)}body,h1,h2,h3,h4,h5,h6{color:var(--color-text-primary)}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:var(--line-height-tight);margin-bottom:var(--spacing-md)}h1{font-size:var(--font-size-4xl);margin-bottom:var(--spacing-lg)}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}h5{font-size:var(--font-size-lg)}h6{font-size:var(--font-size-base)}p{margin-bottom:var(--spacing-md);line-height:var(--line-height-relaxed)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-dark);text-decoration:underline}ol,ul{margin-left:var(--spacing-lg);margin-bottom:var(--spacing-md)}li{margin-bottom:var(--spacing-sm);line-height:var(--line-height-relaxed)}code{font-family:var(--font-mono);font-size:.9em;background-color:var(--color-code-inline);padding:.125rem .375rem;border-radius:var(--radius-sm);color:var(--color-text-primary)}pre{background-color:var(--color-code-bg);padding:var(--spacing-lg);border-radius:var(--radius-lg);overflow-x:auto;margin-bottom:var(--spacing-md)}pre code{background-color:transparent;padding:0;color:hsl(210,20%,90%)}blockquote{border-left:4px solid var(--color-primary);padding-left:var(--spacing-lg);margin:var(--spacing-xl) 0;font-style:italic;color:var(--color-text-secondary)}img{max-width:100%;height:auto;display:block}hr{border:none;border-top:1px solid var(--color-border);margin:var(--spacing-2xl) 0}button,input,select,textarea{font-family:inherit;font-size:inherit}button{cursor:pointer;border:none;background:none}.container{max-width:var(--max-width-container);margin:0 auto;padding:0 var(--spacing-lg)}.content-width{max-width:var(--max-width-content);margin:0 auto}.reading-width{max-width:var(--max-width-reading)}.text-center{text-align:center}.text-muted{color:var(--color-text-secondary)}.text-subtle{color:var(--color-text-tertiary)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn var(--transition-base)}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}::selection{background-color:var(--color-primary-light);color:white}::-webkit-scrollbar{width:12px;height:12px}::-webkit-scrollbar-track{background:var(--color-bg)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-tertiary)}@media print{body{background:white;color:black}.no-print{display:none!important}}@media (max-width:768px){html{font-size:14px}h1{font-size:var(--font-size-3xl)}h2{font-size:var(--font-size-2xl)}}@media (min-width:1440px){html{font-size:18px}}.toolbar{display:flex!important;gap:.6rem;padding:.5rem 1rem;background:rgba(255,255,255,.12);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:12px;box-shadow:0 4px 30px rgba(0,0,0,.1);margin-bottom:1rem;align-items:center;flex-wrap:wrap}[data-theme=dark] .toolbar{background:rgba(0,0,0,.3);border:1px solid rgba(255,255,255,.05)}.toolbar-btn{background:transparent;border:none;cursor:pointer;font-size:1.2rem;transition:transform .12s ease,opacity .12s ease;padding:.4rem;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--color-text-primary)}.toolbar-btn:hover{transform:scale(1.1);background:rgba(59,130,246,.1);color:var(--color-primary)}.toolbar-btn.active{color:var(--color-primary);background:rgba(255,255,255,.1)}.split-pane,.split-pane-custom{position:relative!important;height:calc(100vh - 200px)!important;display:flex}.Resizer{background:#000;opacity:.2;z-index:1;box-sizing:border-box;-moz-background-clip:padding;-webkit-background-clip:padding;background-clip:padding-box}.Resizer:hover{transition:all 2s ease}.Resizer.vertical{width:11px;margin:0 -5px;border-left:5px solid rgba(255,255,255,0);border-right:5px solid rgba(255,255,255,0);cursor:col-resize}.Resizer.vertical:hover{border-left:5px solid rgba(0,0,0,.5);border-right:5px solid rgba(0,0,0,.5)}.editor-pane{background:var(--color-surface);padding:1rem}.editor-pane,.preview-pane{overflow-y:auto;height:100%}.preview-pane{background:var(--color-bg);color:var(--color-text-primary);padding:2rem;border-left:1px solid var(--color-border)}pre{margin:0}.Footer_footer__LxLGV{background:var(--color-surface);border-top:1px solid var(--color-border);margin-top:auto;padding:3rem 0 1.5rem}.Footer_footerContent__QrNjG{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:2rem;gap:2rem;margin-bottom:2rem}.Footer_footerSection__fMxhf{display:flex;flex-direction:column;gap:1rem}.Footer_footerTitle__ueXeY{font-size:var(--font-size-xl);font-weight:700;background:linear-gradient(135deg,var(--color-primary) 0,var(--color-secondary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:0}.Footer_footerDescription__a_aRs{color:var(--color-text-secondary);font-size:var(--font-size-sm);line-height:var(--line-height-relaxed);margin-bottom:0}.Footer_footerSectionTitle__l3Lrj{font-size:var(--font-size-base);font-weight:600;margin-bottom:.5rem;color:var(--color-text-primary)}.Footer_footerNav__4iCuU{display:flex;flex-direction:column;gap:.5rem}.Footer_footerLink__3nFfI{color:var(--color-text-secondary);font-size:var(--font-size-sm);text-decoration:none;transition:color var(--transition-fast)}.Footer_footerLink__3nFfI:hover{color:var(--color-primary);text-decoration:none}.Footer_socialLinks__q1AMY{display:flex;gap:1rem}.Footer_socialLink__h7068{width:40px;height:40px;border-radius:var(--radius-md);background:var(--color-bg);color:var(--color-text-secondary);display:flex;align-items:center;justify-content:center;text-decoration:none;transition:all var(--transition-fast)}.Footer_socialLink__h7068:hover{background:var(--color-primary);color:white;transform:translateY(-2px)}.Footer_footerBottom__fDTaH{padding-top:2rem;border-top:1px solid var(--color-border);text-align:center}.Footer_copyright__lB5DI{color:var(--color-text-tertiary);font-size:var(--font-size-sm);margin:0}@media (max-width:768px){.Footer_footerContent__QrNjG{grid-template-columns:1fr;gap:2rem}}.Header_header__ZPN_X{background:var(--color-surface);border-bottom:1px solid var(--color-border);position:-webkit-sticky;position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background-color:rgba(255,255,255,.9);transition:all var(--transition-base)}[data-theme=dark] .Header_header__ZPN_X{background-color:rgba(28,28,35,.9)}.Header_headerContent__3rkSR{display:flex;align-items:center;justify-content:space-between;padding:1rem 0;gap:2rem}.Header_logo__1hGYx{display:flex;align-items:center;gap:.5rem;font-size:var(--font-size-xl);font-weight:700;color:var(--color-text-primary);text-decoration:none;transition:transform var(--transition-fast)}.Header_logo__1hGYx:hover{transform:scale(1.05);text-decoration:none}.Header_logoIcon__Vg9Xp{font-size:1.5rem}.Header_logoText__Y2kI_{background:linear-gradient(135deg,var(--color-primary) 0,var(--color-secondary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.Header_nav__LLUoy{display:flex;align-items:center;gap:2rem;flex:1 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var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.Header_signOutButton__6d379:hover{background:var(--color-bg);border-color:var(--color-primary);color:var(--color-primary)}.Header_skeleton__mhtzb{width:80px;height:36px;background:var(--color-border);border-radius:var(--radius-md);animation:Header_pulse__H6zXo 1.5s ease-in-out infinite}@keyframes Header_pulse__H6zXo{0%,to{opacity:1}50%{opacity:.5}}.Header_mobileMenuButton__fZCCz{display:none;font-size:1.5rem;color:var(--color-text-primary);background:none;border:none;cursor:pointer;padding:.5rem}@media (max-width:768px){.Header_nav__LLUoy{position:fixed;top:65px;left:0;right:0;background:var(--color-surface);flex-direction:column;padding:1rem;box-shadow:var(--shadow-lg);transform:translateY(-100%);opacity:0;transition:all 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