html{-webkit-text-size-adjust:100%}body{margin:0}img{max-width:100%}[hidden]{display:none!important}

/* 레이아웃: 왼쪽에 고정 메뉴(계산기 목록), 오른쪽에 선택한 페이지. 좁은 화면에서는 메뉴가 위쪽 가로 줄로 바뀜. */
:root{
  --bg:#F2F6F6; --surface:#FFFFFF; --ink:#13272B; --muted:#5A6E72; --line:#D3DEDF;
  --accent:#0A6B5E; --accent-ink:#FFFFFF; --empty:#E3EAEB; --warn:#A8452E;
  --display:"Hahmlet","Noto Serif KR",serif;
  --body:"IBM Plex Sans KR","Apple SD Gothic Neo","Malgun Gothic",sans-serif;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --bg:#0E1719; --surface:#162326; --ink:#E6EEEE; --muted:#93A6A9; --line:#2A3B3F;
  --accent:#45BFA9; --accent-ink:#06211D; --empty:#22312F; --warn:#F09077; color-scheme:dark } }
:root[data-theme="dark"]{
  --bg:#0E1719; --surface:#162326; --ink:#E6EEEE; --muted:#93A6A9; --line:#2A3B3F;
  --accent:#45BFA9; --accent-ink:#06211D; --empty:#22312F; --warn:#F09077; color-scheme:dark }
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.65;display:grid;grid-template-columns:248px minmax(0,1fr);align-items:start}
.s-side{position:sticky;top:env(safe-area-inset-top,0px);height:100vh;overflow-y:auto;background:var(--surface);border-right:1px solid var(--line);padding:28px 16px;display:flex;flex-direction:column;gap:24px}
.s-brand{font-family:var(--display);font-weight:700;font-size:22px;color:var(--ink);text-decoration:none;padding-inline:10px}
.s-brand small{display:block;font-family:var(--body);font-size:12px;font-weight:500;color:var(--muted);letter-spacing:.04em}
.s-nav{display:flex;flex-direction:column;gap:18px}
.s-group{display:flex;flex-direction:column;gap:6px}
.s-label{font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.06em;padding-inline:10px}
.s-side ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.s-side li a,.s-side li span{display:block;padding:9px 10px;border-radius:4px;font-size:15px;font-weight:500;text-decoration:none;color:var(--ink)}
.s-side li span{color:var(--muted)}
.s-side li a:hover{background:var(--bg)}
.s-side li a[aria-current="page"]{background:var(--accent);color:var(--accent-ink)}
.s-side a:focus-visible,.s-item:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.s-main{min-width:0;padding-inline:24px;padding-block:28px 56px}
@media (max-width:860px){
  body{grid-template-columns:minmax(0,1fr)}
  .s-side{height:auto;z-index:5;border-right:0;border-bottom:1px solid var(--line);padding:12px 16px;gap:8px;overflow:visible}
  .s-brand{font-size:18px;padding-inline:0}
  .s-brand small{display:inline;margin-left:8px}
  .s-nav{flex-direction:row;gap:6px;overflow-x:auto;padding-bottom:2px}
  .s-group{display:contents}
  .s-label{display:none}
  .s-side ul{display:contents}
  .s-side li a,.s-side li span{white-space:nowrap;padding:7px 10px;font-size:14px;border:1px solid var(--line)}
  .s-soon{display:none}
  .s-main{padding-inline:16px;padding-block:20px 56px}
}
.s-home{max-width:1100px;display:flex;flex-direction:column;gap:30px}
.s-band{background:var(--accent);color:var(--accent-ink);border-radius:6px;padding:32px 28px 30px;display:flex;flex-direction:column;gap:12px}
.s-band h1{font-family:var(--display);font-weight:700;font-size:clamp(28px,5vw,40px);line-height:1.25;margin:0;text-wrap:balance}
.s-band p{margin:0;font-size:17px;max-width:38em}
.s-pop{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-top:8px}
.s-pop>span{font-size:14px;font-weight:600;margin-right:4px}
.s-pop a{min-height:44px;display:flex;align-items:center;padding:8px 16px;border-radius:4px;background:var(--surface);color:var(--accent);text-decoration:none;font-weight:600;font-size:15px}
.s-pop a:focus-visible{outline:2px solid var(--accent-ink);outline-offset:2px}
.s-home h2{font-family:var(--display);font-weight:700;font-size:20px;margin:0}
.s-sect{display:flex;flex-direction:column;gap:12px}
.s-gh{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px;border-bottom:2px solid var(--ink);padding-bottom:6px}
.s-gh span{font-size:14px;color:var(--muted)}
.s-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}
.s-item{display:flex;flex-direction:column;gap:6px;min-height:96px;padding:16px 18px;background:var(--surface);border:1px solid var(--line);border-radius:6px;text-decoration:none;color:var(--ink);min-width:0}
.s-item:hover{border-color:var(--accent)}
.s-item:hover .s-name{color:var(--accent)}
.s-name{font-weight:600;font-size:17px;line-height:1.35}
.s-desc{color:var(--muted);font-size:14px;line-height:1.45}
.s-tags{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.s-tags li{border:1px dashed var(--line);border-radius:4px;padding:6px 10px;font-size:14px;color:var(--muted)}
.s-home .s-note{margin:0;max-width:42em;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px}

.s-foot{max-width:1100px;margin-top:40px;border-top:1px solid var(--line);padding-top:16px;display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13px;color:var(--muted)}
.s-foot a{color:var(--muted)}
.s-foot a:hover{color:var(--accent)}
.ad{display:none}
.ads .ad{display:block;min-height:120px;max-width:100%;overflow:hidden}
.ads .ad::before{content:"광고";display:block;font-size:11px;color:var(--muted);letter-spacing:.06em;padding-bottom:4px}
.s-doc{max-width:44em;display:flex;flex-direction:column;gap:14px}
.s-doc h1{font-family:var(--display);font-weight:700;font-size:clamp(26px,5vw,36px);line-height:1.25;margin:0}
.s-doc h2{font-family:var(--display);font-weight:700;font-size:20px;margin:16px 0 0}
.s-doc p,.s-doc ol,.s-doc ul{margin:0}
.s-doc ol,.s-doc ul{padding-left:1.3em;display:flex;flex-direction:column;gap:6px}
.s-doc .meta{font-size:13px;color:var(--muted)}
.s-doc a{color:var(--accent)}