/* PTERS 운영 가이드: 기존 브랜드를 잇는 가벼운 편집 레이아웃. */
:root{--brand:#0160fb;--brand-dark:#0047bc;--ink:#0b1b3f;--muted:#465166;--line:#dfe5ef;--tint:#eef4ff;--paper:#fff;--max:1120px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:100px}
body.blog-page{margin:0;background:var(--paper);color:var(--ink);font-family:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;font-size:17px;line-height:1.8;word-break:keep-all;overflow-wrap:anywhere;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,figure{margin:0}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand);text-underline-offset:4px;text-decoration-thickness:1px}
a:hover{color:var(--brand-dark)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--brand);outline-offset:5px;border-radius:3px}
button,input,select,textarea{font:inherit}
.blog-wrap{width:min(var(--max),calc(100% - 64px));margin-inline:auto}
.skip-link{position:fixed;left:16px;top:12px;z-index:100;transform:translateY(-160%);padding:10px 18px;border:2px solid var(--brand);border-radius:8px;background:#fff;color:var(--ink);font-weight:700}
.skip-link:focus{transform:translateY(0)}
.blog-header{border-bottom:1px solid var(--line);background:#fff}
.blog-header>.blog-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:80px}
.blog-header .logo,.blog-header .brand{display:inline-flex;align-items:center;flex-shrink:0;min-height:44px}
.blog-header img{width:auto;height:26px;max-width:150px}
.blog-header nav{display:flex;align-items:center;flex-wrap:wrap;justify-content:flex-end;gap:10px 26px;font-size:15px;font-weight:600}
.blog-header nav a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;color:var(--muted)}
.blog-header nav a[aria-current="page"]{color:var(--brand)}
.blog-header nav a:hover{text-decoration:underline;color:var(--brand)}
.blog-header nav a:last-child:not([aria-current]){padding-inline:16px;border:1px solid var(--line);border-radius:8px;color:var(--ink)}
.blog-intro{max-width:760px;padding:76px 0 48px}
.blog-intro h1{font-size:clamp(32px,4.8vw,52px);line-height:1.24;font-weight:800;letter-spacing:-.045em}
.blog-intro p{max-width:650px;margin-top:20px;color:var(--muted);font-size:19px;line-height:1.8}
.blog-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;padding-bottom:80px}
.post-card{position:relative;padding:30px 0 34px;border-top:2px solid var(--ink)}
.post-card h2,.post-card h3{margin:12px 0;font-size:26px;line-height:1.45;letter-spacing:-.025em;font-weight:750}
.post-card h2 a,.post-card h3 a{color:var(--ink);text-decoration:none}
.post-card h2 a:hover,.post-card h3 a:hover{color:var(--brand);text-decoration:underline}
.post-card p{color:var(--muted);font-size:16px;line-height:1.8}
.post-card>a,.post-card .read-more{display:inline-flex;align-items:center;min-height:44px;margin-top:14px;font-size:15px;font-weight:700}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:4px 16px;color:var(--muted);font-size:14px;line-height:1.7}
.post-meta .category,.post-meta .tag{color:var(--brand);font-weight:700}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(190px,1fr);align-items:start;gap:64px;padding-top:48px;padding-bottom:80px}
article.prose{min-width:0;font-size:17px;line-height:1.95}
.article-head{padding-bottom:32px;border-bottom:1px solid var(--line);margin-bottom:32px}
.article-head h1{margin:18px 0 22px;font-size:clamp(30px,4vw,44px);line-height:1.36;font-weight:800;letter-spacing:-.04em}
.article-head>p{color:var(--muted);font-size:19px;line-height:1.8}
.article-head .breadcrumb,.article-head>.back-link{font-size:14px}
.article-summary{margin:28px 0 36px;padding:24px 28px;background:var(--tint);border-left:4px solid var(--brand);border-radius:0 8px 8px 0}
.article-summary h2,.article-summary h3{margin:0 0 10px!important;font-size:19px!important;line-height:1.5}
.article-summary p,.article-summary ul{margin:0!important}
.prose>p,.prose section>p{margin:18px 0}
.prose h2{margin:48px 0 18px;font-size:28px;line-height:1.5;font-weight:750;letter-spacing:-.025em;scroll-margin-top:24px}
.prose h3{margin:30px 0 12px;font-size:21px;line-height:1.6;font-weight:700;letter-spacing:-.015em;scroll-margin-top:24px}
.prose ul,.prose ol{margin:18px 0;padding-left:1.5em}
.prose li{padding-left:4px;margin:7px 0}
.prose li::marker{color:var(--brand);font-weight:700}
.prose strong{font-weight:750}
.prose blockquote{margin:28px 0;padding:8px 0 8px 22px;border-left:3px solid var(--brand);font-size:20px;font-weight:600}
.prose blockquote p{margin:0}
.prose hr{margin:36px 0;border:0;border-top:1px solid var(--line)}
.prose figure{margin:30px 0}
.prose figure img{border:1px solid var(--line);border-radius:10px}
.prose figcaption{margin-top:10px;color:var(--muted);font-size:14px;text-align:center}
.prose table{display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:24px 0;font-size:15px;line-height:1.7}
.prose th,.prose td{padding:14px 16px;text-align:left;vertical-align:top;border:1px solid var(--line);min-width:130px}
.prose th{background:var(--tint);font-weight:700}
.prose code{padding:2px 5px;border-radius:4px;background:#f1f4f8;font-size:.9em;word-break:break-all}
.prose pre{overflow-x:auto;padding:20px;background:#f1f4f8;border-radius:8px}
.prose pre code{padding:0}
.toc{position:sticky;top:32px;border-top:2px solid var(--brand);padding-top:18px;font-size:14px;line-height:1.7}
.toc h2,.toc h3,.toc strong{display:block;margin:0 0 14px;font-size:15px;font-weight:750}
.toc ul,.toc ol{list-style:none;margin:0;padding:0}
.toc li{margin:0 0 12px}
.toc a{display:block;color:var(--muted);text-decoration:none;padding-block:4px}
.toc a:hover{color:var(--brand);text-decoration:underline}
.mobile-toc{display:none}
.mobile-toc summary{cursor:pointer;font-size:15px;font-weight:700;padding:12px 16px;line-height:1.7;color:var(--ink)}
.mobile-toc[open] summary{border-bottom:1px solid var(--line)}
.mobile-toc ol{margin:0;padding:12px 20px 16px 38px;font-size:14px;line-height:1.8}
.mobile-toc li{margin:6px 0}
.mobile-toc a{display:inline-block;padding-block:3px}
.article-cta{margin-top:48px;padding:30px;border:1px solid #b9d2ff;border-radius:12px;background:var(--tint)}
.article-cta h2,.article-cta h3{margin:0 0 10px;font-size:23px;line-height:1.5}
.article-cta p{margin:0 0 20px;color:var(--muted);font-size:16px}
.article-cta>a,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 22px;border:1px solid var(--brand);border-radius:8px;background:var(--brand);color:#fff;font-weight:700;font-size:16px;text-decoration:none;line-height:1.6}
.article-cta>a:hover,.btn:hover{background:var(--brand-dark);color:#fff}
.article-cta a+a{margin-left:12px}
.related{margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}
.related h2,.related h3{margin:0 0 16px;font-size:21px}
.related ul{padding-left:20px}
.related a{font-size:16px}
.blog-footer{padding:32px 0 40px;border-top:1px solid var(--line);background:#f5f7fb;color:var(--muted);font-size:14px;line-height:1.8}
.blog-footer .blog-wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.blog-footer a{color:var(--muted)}
.blog-footer nav{display:flex;gap:20px;flex-wrap:wrap}
@media(max-width:900px){.article-layout{grid-template-columns:minmax(0,1fr);gap:24px;max-width:760px;margin-inline:auto}.article-layout>.toc{display:none}.mobile-toc{display:block;margin:24px 0 32px;border:1px solid var(--line);border-radius:8px}.blog-list{gap:0 32px}}
@media(max-width:600px){.blog-wrap{width:calc(100% - 40px)}.blog-header>.blog-wrap{gap:16px;min-height:72px}.blog-header img{height:23px;max-width:116px}.blog-header nav{gap:4px 12px;font-size:13px}.blog-header nav a:last-child:not([aria-current]){padding-inline:10px}.blog-intro{padding:44px 0 32px}.blog-intro p{font-size:17px;margin-top:16px}.blog-list{grid-template-columns:minmax(0,1fr);padding-bottom:48px}.post-card{padding:24px 0 28px}.post-card h2,.post-card h3{font-size:23px}.article-layout{padding-top:28px;padding-bottom:48px;gap:24px}.article-head{margin-bottom:24px;padding-bottom:24px}.article-head h1{font-size:30px;margin-top:16px}.article-head>p{font-size:17px}article.prose{font-size:16px;line-height:1.95}.prose h2{font-size:24px;margin-top:36px}.prose h3{font-size:20px}.article-summary{padding:20px;margin-block:24px}.article-cta{padding:24px;margin-top:36px}.article-cta h2,.article-cta h3{font-size:21px}.article-cta>a{width:100%}.article-cta a+a{margin:12px 0 0}.prose th,.prose td{padding:12px;min-width:120px}.blog-footer .blog-wrap{display:block}.blog-footer nav{margin-top:14px}.post-meta{font-size:13px;gap:4px 12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
@media print{.blog-header,.toc,.article-cta,.blog-footer,.skip-link{display:none}.blog-wrap{width:100%;max-width:none}.article-layout{display:block;padding:0}.prose a{color:inherit}.article-head h1{font-size:28pt}.prose h2{break-after:avoid}.prose table{overflow:visible}body.blog-page{font-size:11pt}}