:root{--bg-primary:#f9f9f9;--bg-secondary:#fff;--text-primary:#333;--text-secondary:#666;--border-color:#eee;--shadow:0 2px 10px rgba(0,0,0,0.05);--accent-color:#000;--accent-hover:#333;--sidebar-width:clamp(250px,20vw,350px);--header-height:120px;--sidebar-top-offset:20px;--sidebar-toggle-size:clamp(35px,4vw,50px);--sidebar-toggle-offset:10px}[data-theme="dark"]{--bg-primary:#1a1a1a;--bg-secondary:#2d2d2d;--text-primary:#f0f0f0;--text-secondary:#bbb;--border-color:#444;--shadow:0 2px 10px rgba(0,0,0,0.3);--accent-color:#fff;--accent-hover:#ddd}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Open Sans","Helvetica Neue",sans-serif;line-height:1.6;color:var(--text-primary);background-color:var(--bg-primary);padding:20px;min-height:100vh;display:flex;flex-direction:column;transition:background-color .3s ease,color .3s ease}a,.toc-link,.category-link,.post-link,.archive-link,.nav-bar-link,.footer-link,.mobile-nav-link,.nav-link,.pagination-link,.social-link{color:var(--text-secondary);text-decoration:none;transition:color .2s}a:hover,.toc-link:hover,.category-link:hover,.post-link:hover,.archive-link:hover,.nav-bar-link:hover,.footer-link:hover,.mobile-nav-link:hover,.nav-link:hover,.pagination-link:hover,.social-link:hover{color:var(--accent-color)}a:focus,.toc-link:focus,.category-link:focus,.post-link:focus,.archive-link:focus,.nav-bar-link:focus,.footer-link:focus,.mobile-nav-link:focus,.nav-link:focus,.pagination-link:focus,.social-link:focus{outline:2px solid var(--accent-color);outline-offset:2px}.nav-bar-link,.footer-link,.mobile-nav-link{padding:8px 12px;border-radius:4px}.nav-bar-link:hover,.footer-link:hover,.mobile-nav-link:hover{background-color:rgba(0,0,0,0.08)}.nav-bar-link.active,.footer-link.active,.mobile-nav-link.active{color:var(--accent-color);font-weight:500}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:absolute;top:-40px;left:6px;background:var(--bg-secondary);color:var(--accent-color);padding:8px;text-decoration:none;border-radius:4px;z-index:1000}.skip-link:focus{top:6px}button,.sidebar-toggle,.theme-toggle,.mobile-nav-button,.sidebar-close-mobile,.close-mobile-nav{touch-action:manipulation}.contact-section{background:var(--bg-primary);padding:40px;border-radius:8px;border:1px solid var(--border-color);box-shadow:var(--shadow);margin:30px 0}.contact-section:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,0.1)}.site-header{text-align:center;padding:30px 20px;border-bottom:1px solid var(--border-color);margin-bottom:40px;position:relative}.header-container{max-width:1200px;margin:0 auto;position:relative;display:flex;flex-direction:column;align-items:center}.site-title{font-size:2.5rem;font-weight:500;color:var(--text-primary);margin-bottom:10px}.site-subtitle{font-size:1.2rem;color:var(--text-secondary);font-style:italic;margin-bottom:20px}.nav-bar{display:flex;gap:20px;margin-top:15px}.theme-toggle{position:absolute;top:0;right:0;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-secondary);padding:10px;border-radius:50%;transition:background-color .2s}.theme-toggle:hover{background-color:rgba(0,0,0,0.05)}.main-container{display:flex;max-width:1600px;margin:0 clamp(220px,18vw,370px) 0 clamp(220px,18vw,370px);flex:1;position:relative;width:100%}.sidebar-wrapper{position:fixed;top:calc(var(--header-height)+var(--sidebar-top-offset));width:var(--sidebar-width);height:calc(100vh - var(--header-height) - var(--sidebar-top-offset) - 120px);max-height:calc(100vh - var(--header-height) - var(--sidebar-top-offset) - 120px);z-index:1000;transition:transform .3s ease;background-color:var(--bg-secondary);box-shadow:var(--shadow);border-radius:0 8px 8px 0;overflow-y:auto}.sidebar-toggle{position:fixed;top:calc(var(--header-height)+var(--sidebar-top-offset)+var(--sidebar-toggle-offset));width:var(--sidebar-toggle-size);height:var(--sidebar-toggle-size);border-radius:50%;border:2px solid var(--text-secondary);background-color:var(--bg-secondary);color:var(--text-secondary);font-weight:bold;font-size:1.2rem;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);z-index:1001;transition:all .3s ease}.sidebar-toggle:hover,.sidebar-toggle:focus{background-color:var(--accent-color);color:var(--bg-secondary);border-color:var(--accent-color);outline:3px solid var(--accent-hover);outline-offset:2px}.index-sidebar-wrapper{transform:translateX(calc(-1 *(var(--sidebar-width)+10px)));left:0;border-right:1px solid var(--border-color)}.index-sidebar-wrapper.open{transform:translateX(0)}.index-sidebar-toggle{left:var(--sidebar-toggle-offset)}.index-sidebar-wrapper.open ~ .index-sidebar-toggle{left:calc(var(--sidebar-width) - calc(var(--sidebar-toggle-size) / 2) - var(--sidebar-toggle-offset))}.toc-sidebar-wrapper{transform:translateX(calc(var(--sidebar-width)+10px));right:0;border-left:1px solid var(--border-color);border-radius:8px 0 0 8px}.toc-sidebar-wrapper.open{transform:translateX(0)}.toc-sidebar-toggle{right:var(--sidebar-toggle-offset)}.toc-sidebar-wrapper.open ~ .toc-sidebar-toggle{right:calc(var(--sidebar-width) - calc(var(--sidebar-toggle-size) / 2) - var(--sidebar-toggle-offset))}.sidebar{width:100%;height:100%;display:flex;flex-direction:column;margin:0;padding:0}.sidebar-header{flex-shrink:0;display:flex;justify-content:space-between;align-items:center;padding:20px 60px 20px 60px;border-bottom:1px solid var(--border-color);margin:0;position:relative;z-index:1}.sidebar-content{flex-grow:1;overflow-y:auto;padding:20px;margin:0;scroll-behavior:smooth}.sidebar-content::-webkit-scrollbar{width:6px}.sidebar-content::-webkit-scrollbar-thumb{background:var(--text-secondary);border-radius:3px}.sidebar-content::-webkit-scrollbar-track{background:var(--bg-primary)}.sidebar-title{font-size:1.4rem;font-weight:500;color:var(--text-primary);margin:0}.toc-list,.footer-links{list-style:none;margin:0;padding:0}.toc-list li,.footer-links li{margin-bottom:12px}.toc-link,.category-link,.post-link,.archive-link{font-size:1rem;transition:background-color .2s;display:block;padding:5px 10px;border-radius:4px}.toc-link:hover,.category-link:hover,.post-link:hover,.archive-link:hover{background-color:rgba(0,0,0,0.08)}.toc-link.active{font-weight:500;background-color:rgba(0,0,0,0.03)}.toc-item.active-section>.toc-link{font-weight:500}.toc-sublist{list-style:none;padding-left:20px;margin-top:5px;margin-bottom:5px}.toc-subitem{margin-bottom:8px}.toc-subitem .toc-link{font-size:.95rem;padding:3px 10px}.content{flex:1;margin:0 auto;background:var(--bg-secondary);padding:50px;border-radius:8px;box-shadow:var(--shadow);max-width:1000px;transition:background-color .3s ease,color .3s ease;position:relative;margin-left:20px;margin-right:20px;min-width:0;line-height:1.7}.post-content{font-size:1.1rem;text-align:left;clear:both;overflow:hidden;line-height:1.8}.post-content p{margin-bottom:1.2rem;text-indent:0;text-align:left}.post h1,.post-content h1{font-size:2.2rem;margin:2.5rem 0 1.5rem 0}.post-content h2,.faq-question,.meta-title,.contact-method-title{font-size:1.8rem;margin:2.5rem 0 1.25rem 0;text-align:left;font-weight:500;color:var(--text-primary)}.post-content h3{font-size:1.5rem;margin:2rem 0 1rem 0;text-align:left;font-weight:500;color:var(--text-primary)}.post-content h4{font-size:1.3rem;margin:1.5rem 0 .75rem 0;text-align:left;font-weight:500;color:var(--text-primary)}.post-content h5{font-size:1.1rem;margin:1.5rem 0 .75rem 0;text-align:left;font-weight:500;color:var(--text-primary)}.post-content h6{text-align:left;font-weight:500;color:var(--text-primary)}.post-content a{color:var(--accent-color);border-bottom:1px dotted currentColor}.post-content a:hover{border-bottom-style:solid}.post-preview a,.post-preview .nav-link{text-decoration:underline;text-underline-offset:.2em;text-decoration-thickness:1px}.post-preview a:hover,.post-preview .nav-link:hover{text-decoration-thickness:2px}.post-content blockquote{margin:2rem 0;padding:1.5rem 2rem;font-style:italic;border-left:4px solid var(--accent-color)}.post-excerpt,.post-preview-excerpt,.faq-answer,.contact-method-description{color:var(--text-secondary);line-height:1.5;margin-bottom:20px}.post-content ul,.post-content ol{margin-bottom:1.5rem;padding-left:1.5rem}.post-content li{margin-bottom:.5rem}.post-content blockquote{margin:1.5rem 0;padding:1rem 1.5rem;border-left:4px solid var(--accent-color);background-color:rgba(0,0,0,0.02);font-style:italic}[data-theme="dark"] .post-content blockquote{background-color:rgba(255,255,255,0.05)}.post-content code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;background-color:rgba(0,0,0,0.05);padding:.2em .4em;border-radius:3px;font-size:.9em}[data-theme="dark"] .post-content code{background-color:rgba(255,255,255,0.1)}.post-content pre{margin:1.5rem 0;padding:1rem;border-radius:6px;overflow-x:auto;background-color:rgba(0,0,0,0.03);line-height:1.4}[data-theme="dark"] .post-content pre{background-color:rgba(255,255,255,0.05)}.post-footer{margin-top:50px;padding-top:30px;border-top:1px solid var(--border-color)}.post-navigation{display:flex;justify-content:space-between;margin-bottom:30px}.nav-link{padding:8px 16px;border-radius:4px}.nav-link:hover{background-color:rgba(0,0,0,0.08)}.nav-link--prev{margin-right:auto}.nav-link--next{margin-left:auto}.post-categories-tags{display:flex;flex-wrap:wrap;gap:30px;margin-top:30px;padding-top:30px;border-top:1px solid var(--border-color)}.post-categories,.post-tags{flex:1;min-width:200px}.category-link{display:inline-block;background:var(--accent-color);color:var(--bg-secondary);padding:6px 16px;border-radius:20px;font-size:.9rem;transition:all .3s ease;box-shadow:0 2px 4px rgba(0,0,0,0.1)}.category-link:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 4px 8px rgba(0,0,0,0.15)}.post-tags .tag{display:inline-block;background:rgba(0,0,0,0.05);color:var(--text-secondary);padding:4px 12px;border-radius:20px;font-size:.85rem;margin-right:8px;margin-bottom:8px;transition:all .2s ease}.post-tags .tag:hover{background:var(--accent-color);color:var(--bg-secondary);transform:translateY(-1px)}.post-tags .tag:last-child{margin-right:0}.subscription-section{margin:4rem 0;padding:2rem;background:var(--bg-secondary);border-radius:8px;text-align:center;border:1px solid var(--border-color)}[data-theme="dark"] .subscription-section{background:var(--bg-primary);border:1px solid var(--border-color)}.subscription-section .section-title{color:var(--text-primary)}.subscription-section .post-excerpt{color:var(--text-secondary);margin-bottom:2rem;font-size:1.1rem}.subscription-form{max-width:500px;margin:0 auto}.subscription-input{width:100%;padding:16px;border:1px solid var(--border-color);border-radius:4px;background:var(--bg-secondary);color:var(--text-primary);font-family:inherit;font-size:1.1rem;transition:border-color .2s}.subscription-input:focus{outline:none;border-color:var(--accent-color)}.subscription-button{width:100%;background:var(--accent-color);color:var(--bg-secondary);border:none;padding:16px;border-radius:4px;font-size:1.1rem;font-weight:500;cursor:pointer;transition:background-color .2s;margin-top:10px}.subscription-button:hover{background:var(--accent-hover);transform:translateY(-1px)}[data-theme="dark"] .subscription-input{background:var(--bg-secondary);color:var(--text-primary)}.site-footer{position:relative;z-index:1;background:var(--bg-secondary);border-top:1px solid var(--border-color);margin-top:60px;padding:40px 0 20px 0}.footer-container{max-width:1200px;margin:0 auto;padding:0 20px}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:40px;margin-bottom:30px}.footer-section{display:flex;flex-direction:column}.footer-title{font-size:1.2rem;font-weight:500;color:var(--text-primary);margin-bottom:15px}.footer-text{color:var(--text-secondary);line-height:1.5;margin-bottom:15px}.social-links{display:flex;gap:15px}.social-link{font-size:1.2rem;padding:8px;border-radius:50%}.social-link:hover{background-color:rgba(0,0,0,0.05)}.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid var(--border-color);color:var(--text-secondary);font-size:.9rem}.mobile-menu-toggle{display:none;position:fixed;bottom:20px;right:20px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:50%;width:50px;height:50px;justify-content:center;align-items:center;cursor:pointer;box-shadow:var(--shadow);z-index:100}.mobile-nav{position:fixed;top:0;left:0;width:100%;height:100%;background:var(--bg-secondary);z-index:1000;display:flex;flex-direction:column;padding:20px;transform:translateX(-100%);transition:transform .3s ease}.mobile-nav.active{transform:translateX(0)}.mobile-nav-header{display:flex;justify-content:space-between;align-items:center;padding-bottom:20px;border-bottom:1px solid var(--border-color);margin-bottom:30px}.mobile-nav-title{font-size:1.5rem;font-weight:500;color:var(--text-primary)}.close-mobile-nav{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-secondary);padding:10px}.mobile-nav-links{list-style:none;display:flex;flex-direction:column;gap:15px}.faq-item,.contact-method{margin-bottom:25px;padding-bottom:25px;border-bottom:1px solid var(--border-color)}.faq-item:last-child,.contact-method:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}.categories-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px;margin-bottom:60px}.category-card{background:var(--bg-primary);padding:30px;border-radius:8px;transition:transform .2s,box-shadow .2s;border:1px solid var(--border-color)}.category-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.category-title{font-size:1.4rem;font-weight:500;margin-bottom:15px}.category-description{color:var(--text-secondary);margin-bottom:20px;line-height:1.5}.posts-list,.archive-posts{display:flex;flex-direction:column;gap:30px}.post-preview-meta{display:flex;align-items:center;gap:15px;font-size:.9em;color:var(--text-secondary);margin-top:10px;margin-bottom:15px}.post-preview,.post-item,.archive-post,.faq-item{padding:25px;border-radius:8px;border:1px solid var(--border-color);transition:background-color .2s,transform .2s}.post-preview:hover,.post-item:hover,.archive-post:hover{background:rgba(0,0,0,0.02);transform:translateY(-2px)}.post-preview-title{font-size:1.3rem;font-weight:500;margin-bottom:15px}.post-date,.archive-date{font-style:italic;color:var(--text-secondary)}.section-title{font-size:2.3rem;font-weight:500;color:var(--text-primary);margin-bottom:30px;text-align:center;position:relative}.section-title::after{content:"";display:block;width:50px;height:3px;background:var(--accent-color);margin:15px auto 0;border-radius:2px}.pagination{display:flex;justify-content:space-between;align-items:center;margin-top:40px;padding-top:30px;border-top:1px solid var(--border-color)}.pagination-link{padding:10px 20px;border-radius:4px;transition:all .2s;border:1px solid var(--border-color)}.pagination-link:hover{background-color:rgba(0,0,0,0.08);border-color:var(--accent-color)}.pagination-current{color:var(--text-secondary);font-size:.9rem}.archive-year{margin-bottom:40px}.archive-year-title{font-size:1.8rem;font-weight:500;color:var(--text-primary);margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid var(--border-color)}.archive-post{display:flex;align-items:center;padding:15px;border-radius:4px;transition:background-color .2s}.archive-date{min-width:100px;color:var(--text-secondary);font-size:.9rem}.archive-post-title{flex:1;font-size:1.1rem;font-weight:normal;margin:0 15px}@media(max-width:1024px){:root{--sidebar-width:250px}.main-container{max-width:1400px;margin:0 calc(var(--sidebar-width)+20px) 0 calc(var(--sidebar-width)+20px)}.index-sidebar-toggle{left:var(--sidebar-toggle-offset)}.index-sidebar-wrapper.open ~ .index-sidebar-toggle{left:calc(var(--sidebar-width) - calc(var(--sidebar-toggle-size) / 2) - var(--sidebar-toggle-offset))}.toc-sidebar-toggle{right:var(--sidebar-toggle-offset)}.toc-sidebar-wrapper.open ~ .toc-sidebar-toggle{right:calc(var(--sidebar-width) - calc(var(--sidebar-toggle-size) / 2) - var(--sidebar-toggle-offset))}.content{padding:40px;max-width:900px;margin-left:20px;margin-right:20px}.centered-toc{float:none;margin:30px auto;max-width:100%;margin-right:0}}@media(max-width:768px){.sidebar-close-mobile{display:block;position:absolute;top:15px;right:15px;background:none;border:none;font-size:1.5rem;color:var(--text-secondary);cursor:pointer;z-index:2;padding:5px;border-radius:50%}.sidebar-close-mobile:hover,.sidebar-close-mobile:focus{color:var(--accent-color);background-color:rgba(0,0,0,0.05);outline:2px solid var(--accent-color);outline-offset:2px}.main-container{margin:0 10px;flex-direction:column;align-items:center}.sidebar-toggle{display:none!important}.sidebar-wrapper:not(.open){display:none}.sidebar-wrapper.open{display:block;position:fixed;top:0;height:100vh;width:85%;max-width:320px;border-radius:0;z-index:1002;transition:transform .3s ease;overflow-y:auto;-webkit-overflow-scrolling:touch}.index-sidebar-wrapper.open{left:0;transform:translateX(0)}.toc-sidebar-wrapper.open{right:0;left:auto}.mobile-nav-button{display:block;width:100%;background:none;border:none;text-align:left;padding:12px 16px;font-size:1rem;color:var(--text-secondary);cursor:pointer;font-family:inherit;border-radius:4px}.mobile-nav-button:hover{color:var(--accent-color);background-color:rgba(0,0,0,0.08)}.mobile-menu-toggle{display:flex}.site-header{padding:20px}.site-title{font-size:2rem}.nav-bar{display:none}.content{padding:30px 20px;max-width:100%;margin-left:0;margin-right:0;border-radius:0}.post-navigation{flex-direction:column;gap:15px}.nav-link--prev,.nav-link--next{margin:0;text-align:center}.footer-content{grid-template-columns:1fr;gap:30px}.section-title{font-size:1.7rem}.categories-grid{grid-template-columns:1fr}.post-categories-tags{flex-direction:column;gap:20px}.post-categories,.post-tags{min-width:auto}.archive-post{flex-direction:column;align-items:flex-start;gap:8px}.archive-date{min-width:auto}.archive-post-title{margin:0;width:100%}.theme-toggle{position:fixed!important;bottom:80px;right:20px;top:auto!important;background-color:var(--bg-secondary);box-shadow:var(--shadow);z-index:99;width:50px;height:50px;font-size:1.8rem}.skip-link{top:-50px}}@media(min-width:769px){.sidebar-close-mobile{display:none!important}.main-container{margin:0 clamp(220px,18vw,370px) 0 clamp(220px,18vw,370px)}}.sidebar-wrapper:not(.open){display:none!important}.sidebar-wrapper.open{display:block!important}