/* KLN Seong theme */
:root{--accent:#0F6E56;--accent-soft:#E1F5EE;--accent-dark:#04342C;--ink:#1d1d1b;--muted:#5f5e5a;--line:#e5e3dc;--bg:#faf9f6;--paper:#fff;--wrap:1040px;--text:760px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,"Noto Sans KR","Helvetica Neue",Arial,sans-serif;font-size:17px;line-height:1.7;color:var(--ink);background:var(--paper)}
img{max-width:100%;height:auto}
a{color:var(--accent-dark)}
h1,h2,h3{line-height:1.25;font-weight:600;letter-spacing:-.01em}
h1{font-size:2rem;margin:.2em 0 .4em}
h2{font-size:1.45rem;margin:1.8em 0 .6em;padding-top:.2em}
h3{font-size:1.15rem;margin:1.4em 0 .4em}
p,ul,ol{margin:0 0 1.1em}
.kln-wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.kln-skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px}
.kln-skip:focus{left:8px;z-index:100}
/* header */
.kln-header{border-bottom:1px solid var(--line);background:var(--paper);position:sticky;top:0;z-index:50}
.kln-header__in{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.kln-logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.kln-logo__mark{width:34px;height:34px;border-radius:8px;background:var(--accent);color:var(--accent-soft);display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:600;font-family:"Noto Sans KR",sans-serif}
.kln-logo__text{display:flex;flex-direction:column;line-height:1.15}
.kln-logo__text strong{font-size:15px}.kln-logo__text small{font-size:11px;color:var(--muted)}
.kln-logo--sm strong{font-size:15px}
.kln-nav__list{list-style:none;margin:0;padding:0;display:flex;gap:4px}
.kln-nav__list a{display:block;padding:8px 12px;font-size:14px;color:var(--muted);text-decoration:none;border-radius:6px}
.kln-nav__list a:hover,.kln-nav__list .current-menu-item a{color:var(--ink);background:var(--bg)}
.kln-nav__toggle{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;align-items:center}
.kln-nav__toggle span{display:block;width:20px;height:2px;background:var(--ink)}
/* hero */
.kln-hero{background:var(--bg);border-bottom:1px solid var(--line);padding:44px 0 36px;text-align:center}
.kln-hero h1{font-size:2.3rem;margin:.4em 0 .3em}
.kln-hero__sub{max-width:520px;margin:0 auto;color:var(--muted);font-size:1.05rem}
.kln-pill{display:inline-block;font-size:12px;padding:4px 12px;border-radius:999px;background:var(--accent-soft);color:var(--accent-dark)}
.kln-article--home{padding-top:36px}
.kln-hero__checker{max-width:640px;margin:26px auto 0;text-align:left}
.kln-hero__checker .kln-checker{margin:0;box-shadow:0 8px 30px rgba(0,0,0,.05)}
/* article */
.kln-crumbs{font-size:13px;color:var(--muted);padding:14px 0 0}
.kln-crumbs a{color:var(--muted);text-decoration:none}.kln-crumbs a:hover{color:var(--ink)}
.kln-crumbs i{font-style:normal;margin:0 6px;opacity:.6}
.kln-article{padding:8px 20px 56px}
.kln-article>p,.kln-article>ul,.kln-article>ol,.kln-article>h2,.kln-article>h3,.kln-article>.kln-faq,.kln-article>.kln-toc,.kln-article>.kln-source,.kln-article>.kln-card,.kln-article>.kln-stats,.kln-article>.kln-related,.kln-article>.kln-checker-inline,.kln-article>.kln-extra,.kln-article>.kln-checker,.kln-article>.kln-writer,.kln-article>.kln-quiz{max-width:var(--text)}
.kln-article__head{margin:0 0 20px;max-width:var(--text)}
.kln-article__meta{font-size:13px;color:var(--muted);margin:-4px 0 0}
.kln-article__hg{font-weight:400;color:var(--accent-dark)}
.kln-article--surname h1{font-size:1.8rem}
.kln-toc{background:var(--bg);border-radius:12px;padding:14px 18px;margin:0 0 24px;font-size:14px}
.kln-toc strong{display:block;margin-bottom:6px;font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.kln-toc ol{margin:0;padding-left:18px;columns:2;column-gap:24px}
.kln-toc a{text-decoration:none}
.kln-article table{max-width:100%}
.kln-checker-inline{margin-top:36px}
.kln-listitem{padding:14px 0;border-bottom:1px solid var(--line)}
.kln-listitem p{margin:4px 0 0;color:var(--muted);font-size:15px}
.kln-search{display:flex;gap:8px;margin:0 0 16px}.kln-search input{flex:1;padding:8px 12px;border:1px solid #cfcdc4;border-radius:8px}
/* footer */
.kln-footer{border-top:1px solid var(--line);background:var(--bg);margin-top:40px;font-size:14px;color:var(--muted)}
.kln-footer__in{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;padding:36px 20px 20px}
.kln-footer__col strong{display:block;color:var(--ink);margin-bottom:8px}
.kln-footer__col a{display:block;color:var(--muted);text-decoration:none;padding:3px 0}
.kln-footer__col a:hover{color:var(--ink)}
.kln-footer__col .kln-logo{margin-bottom:8px}
.kln-footer__menu{list-style:none;margin:0;padding:0}
.kln-footer__bottom{border-top:1px solid var(--line);padding:14px 20px;font-size:12px}
@media (max-width:820px){
  .kln-nav__toggle{display:flex}
  .kln-nav{display:none;position:absolute;left:0;right:0;top:64px;background:#fff;border-bottom:1px solid var(--line);padding:8px 20px 12px}
  body.kln-nav-open .kln-nav{display:block}
  .kln-nav__list{flex-direction:column;gap:0}
  .kln-logo__text small{display:none}
  .kln-hero h1{font-size:1.7rem}
  h1{font-size:1.6rem}
  .kln-footer__in{grid-template-columns:1fr;gap:20px}
  .kln-toc ol{columns:1}
}