:root{--paper: #f3efe7;--paper-2: #ece7dc;--paper-3: #e4ddcc;--surface: #f8f5ee;--sumi: #1a1714;--sumi-2: #2b2721;--muted: #6a625a;--faint: #9a9189;--hair: #cfc6b5;--hair-soft: #ddd4c3;--accent: var(--sumi);--accent-ink: var(--sumi);--accent-wash: var(--paper-2);--radius: 0;--radius-sm: 0;--shadow-sm: none;--shadow: none;--shadow-lg: 0 0 0 1px var(--hair);--font-sans: "Pretendard Variable", Pretendard, -apple-system, "Apple SD Gothic Neo", system-ui, sans-serif;--font-serif:"Noto Serif KR", ui-serif, "Apple SD Gothic Neo", serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--bg: var(--paper);--bg-soft: var(--paper-2);--ink: var(--sumi);--ink-muted: var(--muted);--ink-faint: var(--faint);--line: var(--hair);--line-soft: var(--hair-soft);--color-focus: #0b57d0}@media (prefers-color-scheme: dark){:root{--color-focus: #8ab4f8}}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-sans);font-size:15.5px;line-height:1.85;color:var(--sumi-2);background:var(--paper);word-break:keep-all;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}::selection{background:var(--sumi);color:var(--paper)}a{color:inherit;text-decoration:none}p{margin:0 0 1em;text-wrap:pretty}h1,h2,h3,h4{margin:0;letter-spacing:-.015em;font-weight:700;line-height:1.25}:focus{outline:none}a:focus-visible,button:focus-visible,[role=button]:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.progress{position:fixed;top:0;left:0;right:0;height:1px;background:transparent;z-index:30;pointer-events:none}.progress__bar{height:100%;width:0;background:var(--sumi);transition:width 80ms linear}.site-header{position:sticky;top:0;z-index:20;background:color-mix(in oklch,var(--paper) 88%,transparent);backdrop-filter:saturate(120%) blur(10px);-webkit-backdrop-filter:saturate(120%) blur(10px);border-bottom:1px solid var(--hair)}.site-header__row{max-width:1180px;margin:0 auto;padding:22px 36px;display:flex;align-items:center;justify-content:space-between;gap:32px;transition:padding .22s ease;position:relative}.site-header__title{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) translateY(6px);max-width:min(560px,50%);font-family:var(--font-sans);font-size:12.5px;font-weight:500;letter-spacing:0;color:var(--sumi);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease}.site-header__title-cat{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);margin-right:10px;padding-right:10px;border-right:1px solid var(--hair)}.site-header.is-scrolled .site-header__title.has-title{opacity:1;transform:translate(-50%,-50%);pointer-events:auto}.site-header.is-scrolled .site-header__row{padding:4px 36px}.brand__mark,.brand__mark:before,.nav a,.nav__search{transition:font-size .22s ease,height .22s ease,padding .22s ease,margin .22s ease}.site-header.is-scrolled .brand__mark{font-size:16px}.site-header.is-scrolled .brand__mark:before{height:12px;margin-right:8px;transform:translateY(1px)}.site-header.is-scrolled .brand__name{display:none}.site-header.is-scrolled .nav a{padding:4px 12px;font-size:12.5px}.site-header.is-scrolled .nav__search{padding:3px 10px;font-size:11px}.site-header.is-scrolled .nav__search svg{width:12px;height:12px}.brand{display:flex;align-items:baseline;gap:14px;font-weight:600;letter-spacing:0;font-size:14px;color:var(--sumi)}.brand__mark{width:auto;height:auto;border-radius:0;background:transparent;color:var(--sumi);display:inline-flex;align-items:baseline;font-family:var(--font-serif);font-size:22px;font-weight:700;letter-spacing:-.02em;padding:0}.brand__mark:before{content:"";display:inline-block;width:1px;height:20px;margin-right:12px;background:var(--sumi);transform:translateY(3px)}.brand__name{font-family:var(--font-mono);font-size:12px;letter-spacing:.02em;color:var(--muted);font-weight:400;text-transform:lowercase}.brand__dot{color:var(--sumi)}.nav{display:flex;gap:0;align-items:center;font-size:13px;color:var(--muted);font-family:var(--font-sans)}.nav a{padding:8px 16px;border-radius:0;transition:color .16s ease,padding .22s ease;cursor:pointer;white-space:nowrap;position:relative;letter-spacing:.02em}.nav a:hover{background:transparent;color:var(--sumi)}.nav a.active{background:transparent;color:var(--sumi);font-weight:600}.nav a.active:after{content:"";position:absolute;left:16px;right:16px;bottom:2px;height:1px;background:var(--sumi)}.nav__search{margin-left:12px;display:inline-flex;align-items:center;gap:10px;padding:7px 14px;border:1px solid var(--hair);border-radius:0;color:var(--muted);font-size:12px;background:transparent;cursor:pointer;transition:border-color .16s ease,color .16s ease;white-space:nowrap;font-family:var(--font-mono)}.nav__search:hover{border-color:var(--sumi);color:var(--sumi)}.nav__search kbd{font-family:var(--font-mono);font-size:10.5px;padding:1px 5px;border:1px solid var(--hair);border-radius:0;background:transparent;color:var(--muted)}.wrap{max-width:1180px;margin:0 auto;padding:0 36px}.wrap--narrow{max-width:720px}main{padding:96px 0 160px;animation:fadeUp .32s ease both}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.eyebrow{display:inline-flex;align-items:center;gap:14px;font-family:var(--font-mono);white-space:nowrap;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.eyebrow:before{content:"";width:32px;height:1px;background:var(--sumi)}.page-title{font-family:var(--font-serif);font-size:clamp(46px,7.5vw,88px);font-weight:900;line-height:1.02;letter-spacing:-.045em;margin:28px 0 32px;color:var(--sumi);max-width:22ch;text-wrap:balance}.page-title em{font-style:italic;color:var(--sumi);font-weight:500;opacity:.55}.page-lede{max-width:64ch;font-size:16px;line-height:1.85;color:var(--muted);margin:0 0 96px;padding-left:0;text-wrap:pretty}.section-divider{display:flex;align-items:center;gap:16px;margin:24px 0 0}.section-divider__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--faint);white-space:nowrap}.section-divider__rule{flex:1;height:1px;background:var(--hair)}.posts-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;background:transparent;border:0;border-radius:0;overflow:visible;column-gap:72px;row-gap:0}.post-card{position:relative;display:block;padding:48px 0 52px;background:transparent;cursor:pointer;transition:opacity .18s ease;border-top:1px solid var(--hair)}.posts-grid>.post-card:nth-child(-n+2){border-top:0;padding-top:24px}.post-card:hover{opacity:.55}.post-card:hover .post-card__title{color:var(--sumi)}.post-card__meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-family:var(--font-mono);font-size:10.5px;color:var(--muted);margin-bottom:24px;letter-spacing:.04em;text-transform:uppercase}.post-card__meta .dot{width:1px;height:10px;border-radius:0;background:var(--hair)}.post-card__cat{color:var(--sumi);font-weight:500;white-space:nowrap;letter-spacing:.06em}.post-card__difficulty{margin-left:auto;padding:0;border:0;border-radius:0;color:var(--faint);font-size:10px;white-space:nowrap;letter-spacing:.1em}.post-card__difficulty:before{content:"— "}.post-card__title{font-family:var(--font-serif);font-size:26px;font-weight:700;line-height:1.3;letter-spacing:-.025em;color:var(--sumi);margin:0 0 14px;transition:color .18s ease;text-wrap:balance}.post-card__excerpt{font-size:14px;color:var(--muted);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-width:44ch}.post-card__tags{margin-top:24px;display:flex;flex-wrap:wrap;gap:14px}.post-card__tag{font-family:var(--font-mono);font-size:10.5px;color:var(--faint);white-space:nowrap;letter-spacing:.02em}.post-card__tag:before{content:"#";margin-right:1px;color:var(--hair)}.article-header{padding:0 0 72px;border-bottom:1px solid var(--hair);margin-bottom:72px}.breadcrumb{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:56px}.breadcrumb a,.breadcrumb span{white-space:nowrap}.breadcrumb a{cursor:pointer;transition:color .12s ease}.breadcrumb a:hover{color:var(--sumi)}.breadcrumb__sep{color:var(--hair)}.article-meta-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:36px}.article-meta-row .dot{width:1px;height:10px;border-radius:0;background:var(--hair)}.article-meta-row>*{white-space:nowrap}.article-meta-row .cat{color:var(--sumi);font-weight:500;letter-spacing:.1em}.article-meta-row .difficulty{padding:0;border:0;border-radius:0;color:var(--faint);white-space:nowrap;letter-spacing:.1em}.article-meta-row .difficulty:before{content:"— "}.article-title{font-family:var(--font-serif);font-size:clamp(32px,4.2vw,54px);font-weight:800;line-height:1.2;letter-spacing:-.025em;color:var(--sumi);margin:0 0 48px;text-wrap:balance;max-width:24ch}.content{font-size:16.5px;line-height:1.95;color:var(--sumi-2);max-width:62ch}.content h2{font-family:var(--font-serif);font-size:28px;font-weight:700;margin:2.4em 0 .8em;letter-spacing:-.025em;color:var(--sumi);position:relative;padding-top:24px;border-top:1px solid var(--hair)}.content h3{font-family:var(--font-serif);font-size:20px;font-weight:700;margin:2em 0 .6em;color:var(--sumi);letter-spacing:-.015em}.content p{margin:0 0 1.2em}.content ul,.content ol{padding-left:20px;margin:.5em 0 1.4em}.content li{margin:8px 0}.content li::marker{color:var(--faint)}.content strong{color:var(--sumi);font-weight:700}.content a{color:var(--sumi);border-bottom:1px solid var(--hair);transition:border-color .16s ease}.content a:hover{border-bottom-color:var(--sumi)}.content blockquote{margin:44px 0;padding:4px 0 4px 24px;border:0;border-left:3px solid var(--accent);font-family:var(--font-serif);font-size:22px;font-style:normal;font-weight:500;color:var(--sumi);line-height:1.6;letter-spacing:-.015em;word-break:keep-all}.content blockquote cite,.content blockquote footer{display:block;margin-top:14px;font-family:var(--font-mono);font-size:12px;font-style:normal;font-weight:400;letter-spacing:.04em;color:var(--muted)}.content code{font-family:var(--font-mono);font-size:.88em;padding:1px 6px;background:var(--paper-2);border:0;border-radius:0;color:var(--sumi)}.content pre,.shiki{margin:32px 0;padding:24px 28px;border-radius:0;overflow-x:auto;font-size:13px;line-height:1.75;font-family:var(--font-mono);background:var(--sumi);color:#e9e3d5;border:0}.content pre code{background:transparent;padding:0;color:inherit;font-size:inherit}.keywords{margin-top:80px;padding:40px 0;border-top:1px solid var(--sumi);border-bottom:1px solid var(--hair);display:grid;grid-template-columns:140px 1fr;gap:24px 32px;align-items:baseline}.keywords__label{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);padding-top:2px}.keywords__items{display:flex;flex-wrap:wrap;gap:6px 20px}.keywords__tag{font-family:var(--font-mono);font-size:12.5px;color:var(--muted);padding:0;border-radius:0;background:transparent;transition:color .16s ease;white-space:nowrap;letter-spacing:0}.keywords__tag:before{content:"#";color:var(--hair);margin-right:1px}.keywords__tag:hover{color:var(--sumi)}.sources{margin-top:48px;padding:0;background:transparent;border:0;border-radius:0}.sources__label{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);margin-bottom:16px}.sources ul{margin:0;padding:0;list-style:none}.sources li{padding:14px 0;border-bottom:1px solid var(--hair-soft);font-size:14px}.sources li:first-child{border-top:1px solid var(--hair)}.sources li:last-child{border-bottom:1px solid var(--hair)}.sources li a{color:var(--sumi);display:inline-flex;align-items:center;gap:10px;transition:color .16s ease}.sources li a:hover{color:var(--sumi);text-decoration:underline;text-underline-offset:4px}.sources li a:after{content:"→";font-family:var(--font-mono);font-size:12px;color:var(--muted)}.article-footer-nav{margin-top:96px;padding-top:32px;border-top:1px solid var(--sumi);display:flex;justify-content:space-between;align-items:center;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase}.article-footer-nav a{cursor:pointer;color:var(--sumi);padding:0;border-radius:0;border:0;background:transparent;transition:color .16s ease;white-space:nowrap}.article-footer-nav a:hover{color:var(--sumi);text-decoration:underline;text-underline-offset:6px}.site-footer{border-top:1px solid var(--sumi);padding:72px 0 96px;background:transparent}.site-footer__inner{max-width:1180px;margin:0 auto;padding:0 36px;display:flex;justify-content:space-between;align-items:baseline;gap:32px;flex-wrap:wrap;font-size:12px;color:var(--muted);font-family:var(--font-mono);letter-spacing:.06em}.site-footer a{cursor:pointer;transition:color .16s ease}.site-footer a:hover{color:var(--sumi);text-decoration:underline;text-underline-offset:4px}.site-footer__nav{display:flex;gap:28px;flex-wrap:wrap}.site-footer__nav a{white-space:nowrap}.site-footer__mono{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em}@media (max-width: 860px){main{padding:56px 0 96px}.page-title{max-width:none}.page-lede{margin-bottom:56px}.posts-grid{grid-template-columns:1fr;column-gap:0}.posts-grid>.post-card:nth-child(-n+2){border-top:1px solid var(--hair)}.posts-grid>.post-card:first-child{border-top:1px solid var(--sumi)}.keywords{grid-template-columns:1fr;gap:12px}.keywords__label{padding-top:0}.article-title{max-width:none}}@media (max-width: 720px){.site-header__row{padding:16px 20px;gap:16px}.wrap{padding:0 20px}.nav{gap:0;font-size:12.5px}.nav a{padding:7px 10px}.nav__search span{display:none}.page-title{font-size:44px}.article-title{font-size:36px}.post-card{padding:36px 0 40px}.brand__name{display:none}.site-footer__inner{padding:0 20px}}