*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}.skip-link{position:absolute;top:-100%;left:0;background:var(--color-accent);color:#fff;padding:0.5rem 1rem;z-index:100;font-size:0.9rem;text-decoration:none;border-radius:0 0 4px 0;transition:top 0.2s ease}.skip-link:focus{top:0;color:#fff}:root{--color-bg:#ffffff;--color-text:#1a1a1a;--color-text-secondary:#555555;--color-border:#e0e0e0;--color-accent:#0066cc;--color-accent-hover:#004a99;--color-tag-bg:#f0f0f0;--color-code-bg:#f5f5f5;--font-body:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--content-max-width:1200px;--main-max-width:760px;--sidebar-width:300px;--spacing-xs:0.5rem;--spacing-sm:1rem;--spacing-md:1.5rem;--spacing-lg:2rem;--spacing-xl:3rem;--radius-sm:4px;--radius-md:8px;--radius-lg:12px}[data-theme="dark"]{--color-bg:#1a1a1a;--color-text:#e0e0e0;--color-text-secondary:#b0b0b0;--color-border:#333333;--color-accent:#5c9eff;--color-accent-hover:#82b5ff;--color-tag-bg:#2d2d2d;--color-code-bg:#252525}html{font-size:16px;-webkit-text-size-adjust:100%;scroll-behavior:smooth}::selection{background-color:var(--color-accent);color:#ffffff}body{font-family:var(--font-body);color:var(--color-text);background-color:var(--color-bg);line-height:1.7;min-height:100vh;display:flex;flex-direction:column;transition:background-color 0.3s ease,color 0.3s ease}a{color:var(--color-accent);text-decoration:none;transition:color 0.2s ease}a:hover{color:var(--color-accent-hover);text-decoration:underline}a:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:2px}img{max-width:100%;height:auto;display:block}.site-header{padding:var(--spacing-sm) var(--spacing-md);box-shadow:0 1px 3px rgba(0,0,0,0.08)}.nav-container{max-width:var(--content-max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;position:relative}.site-logo{font-size:1.25rem;font-weight:700;color:var(--color-text)}.site-logo:hover{text-decoration:none;color:var(--color-accent)}.nav-links{list-style:none;display:flex;gap:var(--spacing-sm)}.nav-links a{color:var(--color-text-secondary);font-size:0.9rem}.theme-toggle{background:none;border:none;cursor:pointer;font-size:1.2rem;line-height:1;padding:0.25rem;color:var(--color-text-secondary);transition:opacity 0.2s ease}.theme-toggle:hover{opacity:0.7}.theme-toggle:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:2px}.layout{max-width:var(--content-max-width);margin:0 auto;padding:var(--spacing-lg) var(--spacing-md);display:flex;gap:var(--spacing-xl);flex:1;width:100%}.main-content{flex:1;max-width:var(--main-max-width);min-width:0}.sidebar{display:none}.page-title{font-size:1.75rem;margin-bottom:var(--spacing-lg);font-weight:700}.post-card{position:relative;display:flex;gap:var(--spacing-sm);align-items:flex-start;padding:var(--spacing-md) var(--spacing-sm);margin:0 calc(-1 * var(--spacing-sm));border-bottom:1px solid var(--color-border);border-radius:var(--radius-sm);transition:background-color 0.2s ease}.post-card:hover{background-color:var(--color-tag-bg)}.post-card:last-of-type{border-bottom:none}.post-card-link{color:inherit;text-decoration:none}.post-card-link::after{content:"";position:absolute;inset:0}.post-card-link:hover{text-decoration:none}.post-card:hover .post-card-title{color:var(--color-accent)}.post-card-thumbnail{width:80px;height:80px;object-fit:cover;border-radius:var(--radius-sm);flex-shrink:0}.post-card-body{flex:1;min-width:0}.post-card-title{font-size:1.25rem;font-weight:600;line-height:1.4;margin-bottom:var(--spacing-xs);transition:color 0.2s ease}.post-meta{font-size:0.85rem;color:var(--color-text-secondary);display:flex;align-items:center;gap:var(--spacing-sm);flex-wrap:wrap}.post-card .post-excerpt{margin-bottom:var(--spacing-sm)}.post-tags{display:flex;gap:0.375rem;flex-wrap:wrap;position:relative;z-index:1}.tag{background:var(--color-tag-bg);padding:0.25rem 0.6rem;border-radius:var(--radius-sm);font-size:0.8rem;white-space:nowrap;transition:all 0.2s ease}.tag-more{color:var(--color-text-secondary);cursor:default;font-weight:500}.post-excerpt{color:var(--color-text-secondary);font-size:0.95rem;line-height:1.6}.tag-cloud{margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing-lg);border-bottom:1px solid var(--color-border)}.tag-cloud-title{font-size:1.1rem;font-weight:600;margin-bottom:var(--spacing-sm);color:var(--color-text-secondary)}.tag-cloud-list{display:flex;flex-wrap:wrap;gap:0.5rem}.tag-cloud-list .tag-count{margin-left:0.25rem;font-size:0.7rem;opacity:0.6}.tag-cloud-large{display:flex;flex-wrap:wrap;gap:0.8rem;margin-top:var(--spacing-md)}.tag-lg{font-size:1rem;padding:0.4rem 0.8rem}.share-buttons{display:flex;align-items:center;gap:0.5rem;flex-wrap:wrap;margin-bottom:var(--spacing-md)}.share-label{font-size:0.85rem;color:var(--color-text-secondary);margin-right:0.25rem}.share-btn{display:inline-flex;align-items:center;gap:0.35rem;padding:0.35rem 0.6rem;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:none;color:var(--color-text-secondary);font-size:0.8rem;font-family:inherit;cursor:pointer;text-decoration:none;transition:all 0.2s ease;line-height:1}.share-btn:hover{text-decoration:none;color:#ffffff;border-color:transparent}.share-btn:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.share-x:hover{background:#000000}[data-theme="dark"] .share-x:hover{background:#e7e9ea;color:#000000}.share-facebook:hover{background:#1877f2}.share-linkedin:hover{background:#0a66c2}.share-kakao:hover{background:#fee500;color:#191919}.share-copy:hover{background:var(--color-accent)}.post-header{margin-bottom:var(--spacing-lg)}.post-title{font-size:2rem;font-weight:800;line-height:1.3;margin-bottom:var(--spacing-sm);letter-spacing:-0.02em}.post-hero{margin-bottom:var(--spacing-lg);border-radius:var(--radius-md);overflow:hidden;box-shadow:0 4px 12px rgba(0,0,0,0.08);background-color:var(--color-code-bg)}.post-hero-image{width:100%;height:auto;display:block;object-fit:cover}.post-body h2{font-size:1.5rem;font-weight:700;margin-top:var(--spacing-xl);margin-bottom:var(--spacing-sm)}.post-body>h2:first-child{margin-top:0}.post-body h3{font-size:1.25rem;font-weight:600;margin-top:var(--spacing-lg);margin-bottom:var(--spacing-sm)}.post-body p{margin-bottom:var(--spacing-md)}.post-body ul,.post-body ol{margin-bottom:var(--spacing-md);padding-left:var(--spacing-lg)}.post-body li{margin-bottom:var(--spacing-xs)}.post-body blockquote{border-left:4px solid var(--color-accent);padding:var(--spacing-sm) var(--spacing-md);margin:var(--spacing-md) 0;color:var(--color-text-secondary);background:var(--color-tag-bg)}.post-body blockquote p:last-child{margin-bottom:0}.post-body pre{background:var(--color-code-bg);padding:var(--spacing-md);border-radius:var(--radius-sm);overflow-x:auto;margin-bottom:var(--spacing-md);font-size:0.9rem;line-height:1.5}.post-body code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-size:0.9em}.post-body p code{background:var(--color-code-bg);padding:0.2rem 0.4rem;border-radius:var(--radius-sm)}.post-body hr{border:none;border-top:1px solid var(--color-border);margin:var(--spacing-lg) 0}.post-body table{width:100%;border-collapse:collapse;margin-bottom:var(--spacing-md);font-size:0.95rem;display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}.post-body thead{display:table;width:100%;table-layout:fixed}.post-body tbody{display:table;width:100%;table-layout:fixed}.post-body th,.post-body td{padding:0.5rem 0.75rem;border:1px solid var(--color-border);text-align:left}.post-body th{background:var(--color-tag-bg);font-weight:600;white-space:nowrap}.post-body tbody tr:hover{background:var(--color-tag-bg)}.reading-time{color:var(--color-text-secondary);font-size:0.85rem}.post-toc{background:var(--color-tag-bg);border-radius:var(--radius-sm);padding:var(--spacing-sm) var(--spacing-md);margin-bottom:var(--spacing-lg)}.post-toc summary{font-weight:600;font-size:0.95rem;cursor:pointer;color:var(--color-text)}.post-toc ul{list-style:none;padding-left:var(--spacing-sm);margin-top:var(--spacing-xs)}.post-toc li{margin-bottom:0.25rem}.post-toc a{color:var(--color-text-secondary);font-size:0.9rem}.post-toc a:hover{color:var(--color-accent)}.related-posts{margin-top:var(--spacing-xl);padding-top:var(--spacing-lg);border-top:1px solid var(--color-border)}.related-posts-title{font-size:1.25rem;font-weight:700;margin-bottom:var(--spacing-sm)}.related-posts-grid{display:grid;gap:var(--spacing-sm)}.related-post-card{display:flex;gap:var(--spacing-sm);align-items:center;padding:var(--spacing-sm);border-radius:var(--radius-sm);color:inherit;text-decoration:none;transition:background-color 0.2s ease}.related-post-card:hover{background-color:var(--color-tag-bg);text-decoration:none}.related-post-thumbnail{width:64px;height:64px;object-fit:cover;border-radius:var(--radius-sm);flex-shrink:0}.related-post-body{min-width:0}.related-post-title{font-size:0.95rem;font-weight:600;line-height:1.4;margin-bottom:0.25rem}.related-post-card:hover .related-post-title{color:var(--color-accent)}.related-post-body time{font-size:0.8rem;color:var(--color-text-secondary)}.ad-slot{margin:var(--spacing-md) 0;text-align:center}.ad-slot:empty,.ad-slot:has(ins[data-ad-status="unfilled"]){display:none}.ad-atf{margin:var(--spacing-sm) 0 var(--spacing-lg)}.ad-below-content{margin-top:var(--spacing-xl)}.ad-in-feed{margin:var(--spacing-sm) 0}.pagination{display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-lg) 0}.pagination-link{padding:0.4rem 0.8rem;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:0.9rem;transition:all 0.2s ease}.pagination-link:hover{background:var(--color-tag-bg);text-decoration:none}.pagination-link:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.pagination-info{font-size:0.85rem;color:var(--color-text-secondary)}a.tag{color:var(--color-text-secondary);text-decoration:none}a.tag:hover{background:var(--color-accent);color:var(--color-bg);text-decoration:none}.post-count{font-size:0.9em;font-weight:400;color:var(--color-text-secondary)}.error-page{text-align:center;padding:var(--spacing-xl) 0}.error-title{font-size:3rem;font-weight:800;color:var(--color-border);line-height:1;margin-bottom:var(--spacing-sm)}.error-message{font-size:1.1rem;color:var(--color-text-secondary);margin-bottom:var(--spacing-lg)}.error-link{display:inline-block;padding:0.6rem 1.2rem;border:1px solid var(--color-accent);border-radius:var(--radius-sm);transition:all 0.2s ease}.error-link:hover{background:var(--color-accent);color:var(--color-bg);text-decoration:none}.error-link:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.site-footer{border-top:1px solid var(--color-border);padding:var(--spacing-lg) var(--spacing-md);text-align:center;font-size:0.85rem;color:var(--color-text-secondary)}.mobile-menu-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--color-text);padding:0.25rem}@media (max-width:767px){.mobile-menu-toggle{display:block;z-index:2001;position:relative;min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center}.nav-links{display:flex;flex-direction:column;justify-content:center;align-items:center;position:fixed;inset:0;background:rgba(var(--color-bg-rgb,255,255,255),0.98);padding:var(--spacing-xl);z-index:2000;gap:var(--spacing-lg);opacity:0;visibility:hidden;transition:opacity 0.3s ease,visibility 0.3s ease;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}[data-theme="dark"] .nav-links{background:rgba(26,26,26,0.98)}.nav-links.active{opacity:1;visibility:visible}.nav-links li{width:100%;text-align:center;opacity:0;transform:translateY(20px);transition:opacity 0.3s ease,transform 0.3s ease}.nav-links.active li{opacity:1;transform:translateY(0)}.nav-links.active li:nth-child(1){transition-delay:0.1s}.nav-links.active li:nth-child(2){transition-delay:0.15s}.nav-links.active li:nth-child(3){transition-delay:0.2s}.nav-links.active li:nth-child(4){transition-delay:0.25s}.nav-links.active li:nth-child(5){transition-delay:0.3s}.nav-links a{display:block;padding:0.75rem 1rem;font-size:1.5rem;font-weight:700;color:var(--color-text);border-radius:var(--radius-md);transition:background 0.2s ease}.nav-links a:hover{background:var(--color-tag-bg);text-decoration:none}.post-title{font-size:1.5rem;letter-spacing:-0.01em}.page-title{font-size:1.4rem}.share-btn{padding:0.5rem 0.75rem;min-height:44px;min-width:44px;display:inline-flex;align-items:center;justify-content:center}.share-buttons{gap:0.4rem}.post-card{flex-direction:row;align-items:center}.post-card-thumbnail{width:72px;height:72px;border-radius:var(--radius-md);flex-shrink:0}.post-card-title{font-size:1rem}.post-excerpt{display:none}.layout{padding:var(--spacing-sm) var(--spacing-sm)}.site-header{padding:var(--spacing-xs) var(--spacing-sm)}.nav-actions{gap:0.25rem}.nav-actions button{min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center}.post-meta{flex-direction:row;flex-wrap:wrap;align-items:center;gap:0.4rem 0.75rem;font-size:0.8rem}.post-tags{flex-basis:100%}.post-hero{margin-left:calc(-1 * var(--spacing-sm));margin-right:calc(-1 * var(--spacing-sm));border-radius:0}}@media (min-width:768px){.post-title{font-size:2.5rem}.page-title{font-size:2rem}.post-card-thumbnail{width:160px;height:110px}.error-title{font-size:5rem}}@media (min-width:1024px){.sidebar{display:block;width:var(--sidebar-width);flex-shrink:0}.ad-sidebar{position:sticky;top:var(--spacing-lg);min-height:250px}}.nav-actions{display:flex;align-items:center;gap:0.5rem}.search-toggle{background:none;border:none;font-size:1.2rem;cursor:pointer;padding:0.4rem;border-radius:var(--radius-sm);transition:background 0.2s}.search-toggle:hover{background:var(--color-tag-bg)}.search-modal{display:none;position:fixed;inset:0;z-index:50;background:rgba(0,0,0,0.5);backdrop-filter:blur(4px);align-items:flex-start;justify-content:center;padding-top:15vh}.search-modal.active{display:flex}.search-modal-content{width:90%;max-width:560px;background:var(--color-bg);border-radius:var(--radius-lg);box-shadow:0 20px 60px rgba(0,0,0,0.3);overflow:hidden}.search-input{width:100%;padding:1rem 1.25rem;font-size:1.1rem;border:none;background:var(--color-bg);color:var(--color-text);outline:none;border-bottom:1px solid var(--color-border);font-family:var(--font-body)}.search-results{max-height:400px;overflow-y:auto}.search-result-item{display:flex;justify-content:space-between;align-items:center;padding:0.75rem 1.25rem;text-decoration:none;color:var(--color-text);border-bottom:1px solid var(--color-border);transition:background 0.15s}.search-result-item:hover{background:var(--color-tag-bg)}.search-result-item strong{flex:1;font-size:0.95rem}.search-result-item span{font-size:0.8rem;color:var(--color-text-secondary);margin-left:1rem;white-space:nowrap}.search-no-results{padding:1.5rem 1.25rem;color:var(--color-text-secondary);text-align:center}.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin:var(--spacing-lg) 0;padding-top:var(--spacing-lg);border-top:1px solid var(--color-border)}.post-nav-link{display:flex;flex-direction:column;gap:0.3rem;padding:1rem;border-radius:var(--radius-md);text-decoration:none;color:var(--color-text);background:var(--color-tag-bg);transition:background 0.2s,transform 0.2s}.post-nav-link:hover{background:var(--color-border);transform:translateY(-1px)}.post-nav-next{text-align:right}.post-nav-label{font-size:0.8rem;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:0.05em}.post-nav-title{font-size:0.95rem;font-weight:600;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.post-series{margin:var(--spacing-lg) 0;padding:1.25rem;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-tag-bg)}.post-series-title{font-size:1.05rem;margin-bottom:0.75rem;font-weight:600}.post-series-list{list-style:decimal;padding-left:1.5rem;margin:0}.post-series-list li{padding:0.3rem 0;font-size:0.9rem}.post-series-list li a{color:var(--color-accent);text-decoration:none}.post-series-list li a:hover{text-decoration:underline}.post-series-current{color:var(--color-text);font-weight:600}@media (max-width:767px){.post-nav{grid-template-columns:1fr}}@media print{.site-header,.sidebar,.site-footer,.search-modal,.share-buttons,.post-nav,.related-posts,.post-series,.post-toc,.ad-slot,.mobile-menu-toggle,.nav-actions,.skip-link{display:none !important}body{background:#fff;color:#000;font-size:12pt;line-height:1.6}.layout{display:block;max-width:none;padding:0}.main-content{max-width:none}a{color:#000;text-decoration:underline}a[href^="http"]::after{content:" (" attr(href) ")";font-size:0.8em;color:#555}pre,code{border:1px solid #ddd;background:#f5f5f5 !important}img{max-width:100% !important}}