/* Noto Sans KR 한국어 부분 집합(SIL OFL 1.1 — fonts/OFL.txt, 출처 fonts/SOURCE.md). 바깥 글꼴 서비스를 쓰지 않는다. */
@font-face{font-family:"Noto Sans KR";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/NotoSansKR-Regular.6acb22ce.woff2) format("woff2")}
@font-face{font-family:"Noto Sans KR";font-style:normal;font-weight:700;font-display:swap;src:url(fonts/NotoSansKR-Bold.113d6991.woff2) format("woff2")}
:root{
  --bg:#f7f6f2;--surface:#ffffff;--text:#1d2330;--muted:#596273;--line:#e2dfd8;
  --accent:#1f3a64;--accent-soft:#e9eff8;--accent-text:#ffffff;
  --mark:#dc2626;--mark-text:#ffffff;
  --tip-bg:#ecf6ef;--tip-line:#4f9a61;--tip-title:#245c33;
  --warn-bg:#fff5df;--warn-line:#d9a23a;--warn-title:#6d4a00;
  --stop-bg:#fdeeee;--stop-line:#d0524d;--stop-title:#8a1f1b;
  --code-bg:#efede7;--shadow:0 1px 2px rgba(20,24,33,.06),0 4px 14px rgba(20,24,33,.05);
  --font:"Noto Sans KR","Malgun Gothic","Apple SD Gothic Neo","맑은 고딕",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#15181e;--surface:#1d2129;--text:#e7e9ee;--muted:#a3abb9;--line:#323844;
    --accent:#8fb3ea;--accent-soft:#233149;--accent-text:#0f1620;
    --mark:#f05252;--mark-text:#ffffff;
    --tip-bg:#17291d;--tip-line:#4f9a61;--tip-title:#9ad2a8;
    --warn-bg:#2d2412;--warn-line:#c08a2a;--warn-title:#f0c674;
    --stop-bg:#331a1a;--stop-line:#c4504b;--stop-title:#f3a5a1;
    --code-bg:#262b35;--shadow:0 1px 2px rgba(0,0,0,.3);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#15181e;--surface:#1d2129;--text:#e7e9ee;--muted:#a3abb9;--line:#323844;
  --accent:#8fb3ea;--accent-soft:#233149;--accent-text:#0f1620;
  --mark:#f05252;--mark-text:#ffffff;
  --tip-bg:#17291d;--tip-line:#4f9a61;--tip-title:#9ad2a8;
  --warn-bg:#2d2412;--warn-line:#c08a2a;--warn-title:#f0c674;
  --stop-bg:#331a1a;--stop-line:#c4504b;--stop-title:#f3a5a1;
  --code-bg:#262b35;--shadow:0 1px 2px rgba(0,0,0,.3);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16.5px;line-height:1.75;word-break:keep-all;overflow-wrap:anywhere}
a{color:var(--accent)}
img{max-width:100%;height:auto;display:block}
[id]{scroll-margin-top:16px}
code,kbd{font-family:Consolas,"D2Coding",ui-monospace,monospace;font-size:.92em;background:var(--code-bg);padding:.1em .4em;border-radius:5px}
kbd{border:1px solid var(--line)}
.btn{display:inline;font-weight:700;font-size:.93em;padding:0 .45em;border:1px solid var(--line);border-radius:6px;background:var(--surface);white-space:normal;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid var(--line);background:var(--surface)}
header.top .wrap{padding-top:36px;padding-bottom:30px}
.eyebrow{font-size:.85rem;color:var(--muted);margin:0 0 6px;letter-spacing:.02em}
h1{font-size:2rem;line-height:1.3;margin:0 0 10px}
.lead{margin:0;color:var(--muted);max-width:46em}
.layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:44px;padding-top:32px;padding-bottom:80px}
nav.toc{position:sticky;top:20px;align-self:start;max-height:calc(100vh - 40px);overflow:auto;font-size:.92rem;padding-right:6px}
nav.toc h2{font-size:.8rem;color:var(--muted);margin:0 0 8px;letter-spacing:.04em}
nav.toc ol{list-style:none;margin:0;padding:0;counter-reset:toc}
nav.toc li{counter-increment:toc}
nav.toc a{display:block;padding:5px 10px;border-radius:6px;color:var(--text);text-decoration:none;line-height:1.45}
nav.toc a::before{content:counter(toc) ". ";color:var(--muted)}
nav.toc a:hover{background:var(--accent-soft)}
main{min-width:0}
section.chapter{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:30px 32px;margin:0 0 28px;box-shadow:var(--shadow);scroll-margin-top:16px}
section.chapter > h2{font-size:1.45rem;line-height:1.35;margin:0 0 6px}
.chap-no{display:inline-block;min-width:1.9em;color:var(--accent)}
h3{font-size:1.12rem;margin:30px 0 8px;line-height:1.45;scroll-margin-top:16px}
h4{font-size:1rem;margin:18px 0 4px}
p{margin:10px 0}
ul,ol{padding-left:1.35em;margin:10px 0}
li{margin:4px 0}
.step{display:grid;grid-template-columns:38px minmax(0,1fr);gap:14px;margin:26px 0;padding-top:22px;border-top:1px dashed var(--line)}
.step:first-of-type{border-top:0;padding-top:4px}
.step-num{width:34px;height:34px;border-radius:50%;background:var(--accent);color:var(--accent-text);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:1rem;margin-top:2px}
.step-body > h3{margin-top:2px}
figure{margin:14px 0;padding:0}
figure .shot{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;cursor:zoom-in}
figure .shot.narrow{max-width:540px}
figure .shot.tiny{max-width:280px}
figcaption{font-size:.9rem;color:var(--muted);margin-top:8px}
ol.legend{list-style:none;padding:0;margin:8px 0 0;font-size:.92rem;color:var(--text)}
ol.legend li{position:relative;padding-left:30px;margin:5px 0}
ol.legend b{position:absolute;left:0;top:3px;width:22px;height:22px;border-radius:50%;background:var(--mark);color:var(--mark-text);font-size:.78rem;display:flex;align-items:center;justify-content:center}
.next{background:var(--accent-soft);border-radius:8px;padding:10px 14px;margin:12px 0}
.next strong{color:var(--accent)}
.note{border-left:4px solid var(--line);border-radius:6px;padding:12px 16px;margin:16px 0}
.note > strong:first-child{display:block;margin-bottom:2px}
.note p{margin:6px 0}
.note.tip{background:var(--tip-bg);border-color:var(--tip-line)}
.note.tip > strong:first-child{color:var(--tip-title)}
.note.warn{background:var(--warn-bg);border-color:var(--warn-line)}
.note.warn > strong:first-child{color:var(--warn-title)}
.note.stop{background:var(--stop-bg);border-color:var(--stop-line)}
.note.stop > strong:first-child{color:var(--stop-title)}
.table-wrap{overflow-x:auto;margin:14px 0;border:1px solid var(--line);border-radius:10px}
table{border-collapse:collapse;width:100%;font-size:.93rem;line-height:1.6}
th,td{text-align:left;vertical-align:top;padding:9px 12px;border-bottom:1px solid var(--line)}
th{background:var(--accent-soft);font-weight:700}
tr:last-child td{border-bottom:0}
.check{list-style:none;padding:0}
.check li{padding-left:28px;position:relative}
.check li::before{content:"";position:absolute;left:4px;top:.55em;width:12px;height:12px;border:2px solid var(--accent);border-radius:3px}
.faq details{border:1px solid var(--line);border-radius:10px;padding:0 16px;margin:10px 0;background:var(--surface)}
.faq summary{cursor:pointer;font-weight:700;padding:12px 0;list-style-position:outside}
.faq details[open] summary{border-bottom:1px solid var(--line);margin-bottom:6px}
.faq details > *:last-child{margin-bottom:14px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.card{border:1px solid var(--line);border-radius:10px;padding:14px 16px}
.card h4{margin-top:0}
footer{color:var(--muted);font-size:.85rem;padding:0 0 40px}
#viewer{position:fixed;inset:0;background:rgba(10,12,16,.86);display:none;align-items:center;justify-content:center;padding:16px;z-index:10;cursor:zoom-out}
#viewer.on{display:flex}
#viewer img{max-width:100%;max-height:100%;border-radius:8px;background:#fff}
@media (max-width:920px){
  .layout{grid-template-columns:minmax(0,1fr);gap:20px}
  nav.toc{position:static;max-height:none;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px}
  nav.toc ol{columns:2;column-gap:16px}
}
@media (max-width:600px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  h1{font-size:1.6rem}
  section.chapter{padding:20px 16px;border-radius:12px}
  .step{grid-template-columns:30px minmax(0,1fr);gap:10px}
  .step-num{width:28px;height:28px;font-size:.9rem}
  nav.toc ol{columns:1}
  .two{grid-template-columns:1fr}
  th,td{padding:8px 9px}
}
/* 표 첫 칸 너비(인라인 style= 를 옮김 — CSP style-src 'self') */
th.w22{width:22%}
th.w24{width:24%}
th.w26{width:26%}
th.w28{width:28%}
th.w30{width:30%}
.contact{list-style:none;padding:0;margin:8px 0 16px}
.contact li{margin:2px 0}