:root{color-scheme:light;--ink:#173f35;--muted:#53665d;--paper:#faf9f3;--sage:#dcebd8;--lime:#d3efa2;--white:#fffefa;--line:#d9e0d5;--font:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:112px}
body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--font);font-size:16px;line-height:1.65;word-break:keep-all;overflow-wrap:break-word}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button,a{-webkit-tap-highlight-color:transparent}
button{color:inherit;cursor:pointer}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,p,figure{margin:0}
h1,h2,h3{line-height:1.3;letter-spacing:-.045em}
button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #47734b;outline-offset:5px}
[hidden]{display:none!important}
.skip{position:absolute;top:-100px;left:20px;z-index:10;background:var(--white);padding:12px}
.skip:focus{top:12px}
.wrap{width:min(1180px,calc(100% - 96px));margin-inline:auto}
.site-header{height:86px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}
.brand{display:flex;align-items:center;gap:24px;flex-shrink:0}
.brand img{width:184px;margin-inline:-8px}
.brand span{font-size:15px;border-left:1px solid #ccd5c8;padding-left:23px;white-space:nowrap}
.header-links{display:flex;align-items:center;gap:26px;font-size:14px}
.site-link{border:1px solid #b9c8b8;padding:9px 16px;border-radius:6px;white-space:nowrap}
.library{background:linear-gradient(137deg,#faf9f3 18%,#f2f6eb 67%,#e8f0e0);padding-bottom:76px}
.intro{display:flex;justify-content:space-between;align-items:flex-end;gap:56px;padding-block:50px 36px}
.intro h1{font-size:44px;font-weight:650;line-height:1.23}
.intro p{color:var(--muted);font-size:16px;margin-top:16px}
.search{width:320px;flex-shrink:0;position:relative;margin-bottom:3px}
.search label{display:block;font-size:13px;margin-bottom:10px}
.search svg{position:absolute;left:15px;bottom:17px;width:18px;height:18px;stroke:var(--muted);fill:none;stroke-width:1.7}
.search input{width:100%;padding:14px 14px 14px 42px;border:1px solid #bac9b8;border-radius:8px;background:#ffffffa6;color:var(--ink);font-size:14px;min-height:52px}
.search input::placeholder{color:#617266}
.library-toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:26px;padding-bottom:16px;border-bottom:1px solid #ccd7c6}
.categories{display:flex;gap:8px;flex-wrap:wrap}
.categories button{border:0;background:transparent;padding:9px 14px;min-height:42px;border-radius:5px;color:var(--muted);font-size:14px}
.categories button[aria-pressed=true]{background:var(--ink);color:var(--white)}
.result-count{font-size:13px;white-space:nowrap;color:var(--muted)}
.article-grid{display:grid;grid-template-columns:1.52fr 1fr;gap:28px 34px;align-items:start}
.guide-card{min-width:0}
.guide-card:first-child{grid-row:span 2}
.guide-link{display:block}
.cover{overflow:hidden;position:relative;border-radius:9px;background:#e6eadf;isolation:isolate}
.cover img{width:100%;aspect-ratio:2.48;object-fit:cover}
.guide-card:first-child .cover img{aspect-ratio:1.5}
.guide-card:first-child .cover{margin-bottom:21px}
.guide-card:not(:first-child) .cover{margin-bottom:13px}
.guide-card:not(:first-child) .cover img{object-position:center}
.meta{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:12px;margin-bottom:8px}
.meta span+span::before{content:"";display:inline-block;width:3px;height:3px;vertical-align:middle;background:#93a58f;border-radius:50%;margin-right:12px}
.guide-card h2{font-size:21px;font-weight:620;max-width:26ch}
.guide-card:first-child h2{font-size:29px;max-width:none}
.guide-card p{color:var(--muted);margin-top:11px;max-width:47ch;font-size:15px;line-height:1.65}
.read-link{margin-top:19px;font-size:14px;display:inline-flex;align-items:center;gap:15px;border-bottom:1px solid #a2b597;padding-bottom:3px}
.read-link svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.5}
.guide-card:not(:first-child) .read-link{display:none}
.guide-link:hover h2{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:5px}
.guide-link:focus-visible{outline-offset:8px;border-radius:6px}
.article-grid.is-filtered{grid-template-columns:repeat(2,minmax(0,1fr))}
.article-grid.is-filtered .guide-card{grid-row:auto}
.article-grid.is-filtered .cover img{aspect-ratio:1.8}
.article-grid.is-filtered .guide-card:first-child .cover img{aspect-ratio:1.5}
.article-grid.is-filtered h2{font-size:25px}
.article-grid.is-filtered .cover{margin-bottom:20px}
.empty{padding:56px 24px;text-align:center}
.empty h2{font-size:24px}
.empty p{margin:12px 0 20px;color:var(--muted)}
.reset{padding:10px 20px;background:var(--white);border:1px solid #aaba9e;border-radius:6px;min-height:44px}
.next-step{padding-block:46px;display:flex;align-items:center;justify-content:space-between;gap:32px;border-bottom:1px solid var(--line)}
.next-step h2{font-size:25px;font-weight:600}
.next-step p{color:var(--muted);font-size:14px;margin-top:9px}
.primary{display:inline-flex;justify-content:center;align-items:center;gap:20px;padding:14px 22px;background:var(--lime);border:1px solid #c3de93;border-radius:6px;font-weight:600;font-size:15px;min-height:50px;white-space:nowrap}
.primary svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8}
.site-footer{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:25px 34px;font-size:12px;color:var(--muted)}
.site-footer img{width:126px;margin-left:-5px}
.site-footer span{text-align:right}
.article-page{background:var(--white)}
.article-page .site-header{background:var(--white)}
.breadcrumbs{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--muted);padding:27px 0 29px}
.breadcrumbs a{text-decoration:underline;text-underline-offset:4px}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(185px,1fr);gap:74px;align-items:start;padding-bottom:60px}
.article-header{margin-bottom:28px}
.article-header .meta{margin-bottom:15px}
.article-header h1{font-size:42px;line-height:1.28;font-weight:650;max-width:24ch}
.article-deck{font-size:18px;color:var(--muted);margin-top:19px;max-width:45ch}
.article-credit{font-size:12px;color:var(--muted);margin-top:20px}
.article-cover{margin:0 0 36px}
.article-cover img{width:100%;aspect-ratio:auto;object-fit:contain;border-radius:8px;background:#e6eadf}
.article-cover figcaption,.body-figure figcaption{font-size:12px;color:var(--muted);margin-top:10px;line-height:1.65}
.article-body{font-size:18px;line-height:1.9}
.article-body>p{margin-bottom:24px}
.article-body section{margin-top:42px;scroll-margin-top:30px}
.article-body h2{font-size:26px;font-weight:650;line-height:1.4;margin-bottom:15px}
.article-body h3{font-size:20px;margin-top:27px;margin-bottom:10px}
.article-body p+p{margin-top:15px}
.article-body a:not(.primary){text-decoration:underline;text-decoration-color:#9aaf8b;text-underline-offset:4px}
.article-body ul,.article-body ol{padding-left:23px;margin-block:14px 22px}
.article-body li{padding-left:3px;margin-block:8px}
.summary{border-left:3px solid #8aab67;padding:17px 23px;background:#f0f4e9;font-size:17px;line-height:1.85}
.summary strong{display:block;margin-bottom:4px}
.body-figure{margin:25px 0 32px}
.body-figure img{width:100%;border-radius:7px}
.reading-order{list-style:none!important;margin:25px 0!important;padding:0!important;display:grid;grid-template-columns:repeat(3,1fr);background:#f0f4e9;border-radius:7px}
.reading-order li{padding:24px 16px!important;margin:0!important;border-right:1px solid #d7e0cb}
.reading-order li:last-child{border:0}
.reading-order span{display:block;font-size:12px;margin-bottom:12px;color:var(--muted)}
.reading-order strong{font-size:18px;font-weight:600}
.reading-order p{font-size:14px;line-height:1.6;margin-top:7px}
.checklist{list-style:none!important;padding:0!important}
.checklist li{display:flex;gap:12px;align-items:flex-start;padding:13px 0!important;border-bottom:1px solid #e0e5da;margin:0!important}
.checklist li::before{content:"✓";display:grid;place-items:center;width:24px;height:24px;border:1px solid #c4d2b4;border-radius:4px;background:#f1f6e9;flex-shrink:0;font-size:15px;line-height:1;margin-top:5px}
.checklist strong{display:block;font-size:17px;font-weight:600}
.checklist small{display:block;color:var(--muted);font-size:15px;line-height:1.7}
.note{background:#f6f6ef;border-radius:5px;padding:17px 20px;font-size:15px;color:var(--muted);line-height:1.8;margin-top:20px}
.sources{padding-top:24px;border-top:1px solid var(--line);margin-top:43px!important;font-size:14px;color:var(--muted)}
.sources h2{font-size:18px}
.sources ul{margin-bottom:10px}
.article-cta{padding:25px 0;margin-top:36px;border-block:1px solid var(--line);display:flex;align-items:center;gap:20px;justify-content:space-between}
.article-cta strong{font-size:19px}
.article-cta p{font-size:13px;color:var(--muted);margin-top:5px}
.article-cta .primary{font-size:14px;padding:12px 16px}
.toc{position:sticky;top:30px;border-left:1px solid #d9e1d2;padding-left:24px;font-size:14px;margin-top:10px}
.toc>p{font-size:12px;color:var(--muted);margin-bottom:18px}
.toc nav{display:flex;flex-direction:column;gap:16px}
.toc a:hover{text-decoration:underline;text-underline-offset:4px}
.toc .back-library{display:inline-block;margin-top:28px;padding-top:20px;border-top:1px solid #dce3d4;font-size:13px}
.more-guides{margin-top:34px}
.more-guides h2{font-size:18px;margin-bottom:16px}
.related{display:flex;gap:20px;align-items:center;padding:17px 0;border-top:1px solid var(--line)}
.related img{width:110px;aspect-ratio:1.6;object-fit:cover;border-radius:5px;background:#e6eadf}
.related span{font-size:16px;font-weight:550}
.related small{display:block;color:var(--muted);font-size:12px;font-weight:400;margin-bottom:4px}
.related:hover span{text-decoration:underline;text-underline-offset:4px}
@media (prefers-reduced-motion:no-preference){.guide-link .cover img{transition:transform .35s ease}
.guide-link:hover .cover img{transform:scale(1.025)}
.primary{transition:background-color .2s ease}
.primary:hover{background:#c6e98d}}
@media(max-width:1000px){.wrap{width:calc(100% - 64px)}
.intro{gap:24px}
.intro h1{font-size:38px}
.search{width:270px}
.article-grid{gap:24px}
.article-header h1{font-size:36px}
.article-layout{gap:35px;grid-template-columns:minmax(0,1fr) 175px}
.toc{padding-left:18px}
.article-cta{align-items:flex-start;flex-direction:column}
.guide-card:first-child h2{font-size:27px}}
@media(max-width:760px){.wrap{width:calc(100% - 40px)}
.site-header{height:76px}
.brand{gap:15px}
.brand img{width:156px;margin-inline:-6px}
.brand span{padding-left:14px;font-size:14px}
.header-links .site-link{font-size:12px;padding:8px 10px}
.intro{align-items:flex-start;flex-direction:column;padding-block:32px 26px;gap:23px}
.intro h1{font-size:35px}
.intro p{font-size:15px;margin-top:14px}
.search{width:100%;margin:0}
.search label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.library-toolbar{gap:12px;margin-bottom:22px}
.categories{gap:3px}
.categories button{font-size:13px;padding-inline:11px}
.article-grid{grid-template-columns:1fr;gap:34px}
.guide-card:first-child{grid-row:auto}
.guide-card .cover img{aspect-ratio:1.75}
.guide-card:first-child .cover img{aspect-ratio:1.5}
.guide-card:not(:first-child) .cover{margin-bottom:17px}
.guide-card h2,.guide-card:first-child h2{font-size:25px;max-width:none}
.guide-card p{font-size:15px;margin-top:10px}
.guide-card:not(:first-child) .read-link{display:inline-flex}
.article-grid.is-filtered{grid-template-columns:1fr}
.library{padding-bottom:42px}
.next-step{align-items:flex-start;flex-direction:column;padding-block:31px;gap:22px}
.next-step h2{font-size:23px}
.next-step .primary{width:100%}
.site-footer{gap:12px;align-items:flex-start}
.site-footer img{width:100px}
.site-footer span{max-width:27ch;font-size:11px}
.article-layout{display:flex;flex-direction:column;gap:0;padding-bottom:35px}
.article-layout>article{min-width:0;width:100%}
.article-header h1{font-size:33px}
.article-header{margin-bottom:23px}
.article-deck{font-size:17px}
.article-cover{margin-bottom:28px}
.article-cover img{aspect-ratio:auto}
.article-cover.diagram-cover img{aspect-ratio:1.6;object-fit:contain;background:#e9efe2}
.breadcrumbs{padding-block:23px;font-size:12px}
.toc{display:none}
.article-body{font-size:17px;line-height:1.85}
.article-body h2{font-size:24px}
.article-body section{margin-top:32px}
.summary{font-size:16px;padding:15px 18px}
.reading-order{grid-template-columns:1fr}
.reading-order li{border-right:0;border-bottom:1px solid #d7e0cb;padding:18px 20px!important}
.reading-order span{margin-bottom:5px}
.reading-order p{margin-top:3px}
.article-cta .primary{width:100%}
.body-figure img{min-height:0}
.related{gap:15px}
.related img{width:90px}
.related span{font-size:15px}
.result-count{font-size:12px}}
@media(max-width:480px){.brand span{display:none}
.library-toolbar{align-items:flex-start;flex-direction:column}}
@media(max-width:380px){.intro h1{font-size:32px}
.categories button{padding-inline:8px}
.article-header h1{font-size:30px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.article-credit time{white-space:nowrap}
.article-credit a,.article-cover figcaption a{text-decoration:underline;text-underline-offset:3px}
.mobile-toc{display:none}
.article-cover a:focus-visible{outline-offset:3px}
@media(max-width:760px){.mobile-toc{display:block;margin-bottom:24px;padding:12px 16px;border:1px solid var(--line);border-radius:6px;font-size:14px}
.mobile-toc summary{cursor:pointer;min-height:30px;line-height:30px}
.mobile-toc nav{display:flex;flex-direction:column;gap:4px;padding-top:8px}
.mobile-toc a{display:block;padding-block:8px}}