/* 유레카장 고객 매뉴얼 — Apple web design system 벤치마킹
   단일 액센트 #0066cc · 헤어라인 · 무그림자 · 17px 본문 */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#0066cc;--primary-focus:#0071e3;
  --canvas:#fff;--parchment:#f5f5f7;--pearl:#fafafc;
  --ink:#1d1d1f;--ink-80:#333;--ink-48:#7a7a7a;--muted:#86868b;
  --hairline:#e0e0e0;--divider-soft:#f0f0f0;
  --nav-black:#000;
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:"SF Pro Text",system-ui,-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Noto Sans KR',sans-serif;
  -webkit-font-smoothing:antialiased;
  background:var(--canvas);color:var(--ink);
  font-size:17px;line-height:1.47;letter-spacing:-0.374px;
}
img,video{max-width:100%;height:auto;display:block;margin:24px auto;border-radius:8px;border:1px solid var(--divider-soft)}
a{color:var(--primary);text-decoration:none;word-break:break-all}
a:hover{text-decoration:underline}
a:focus-visible{outline:2px solid var(--primary-focus);outline-offset:2px;border-radius:4px}

/* 글로벌 내비 — 블랙 44px */
.top{position:sticky;top:0;z-index:10;background:var(--nav-black);height:44px;display:flex;align-items:center;justify-content:center}
.brand{color:#fff;font-size:14px;font-weight:600;letter-spacing:-0.224px}
.brand:hover{text-decoration:none;color:#fff}
.brand span{color:#fff;font-weight:400;opacity:.75;margin-left:6px}

.wrap{max-width:980px;margin:0 auto;padding:0 22px 96px}
.foot{background:var(--parchment);border-top:1px solid var(--hairline);margin-top:0;
  padding:40px 22px 60px;color:var(--ink-48);font-size:12px;letter-spacing:-0.12px;text-align:center}

/* 홈 히어로 */
.hero{text-align:center;padding:80px 0 56px}
.kicker{color:var(--ink-48);font-weight:600;letter-spacing:2px;font-size:12px;margin-bottom:16px;text-transform:uppercase}
.hero h1{font-family:"SF Pro Display",system-ui,-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Noto Sans KR',sans-serif;
  font-weight:600;font-size:clamp(34px,5.6vw,56px);line-height:1.07;letter-spacing:-0.28px}
.hero-sub{color:var(--ink);margin-top:18px;font-size:clamp(18px,2.4vw,21px);font-weight:400;line-height:1.4;letter-spacing:0.2px}
.search{width:100%;max-width:560px;margin:36px auto 0;display:block;height:44px;padding:12px 20px;font-size:17px;
  border:1px solid rgba(0,0,0,.08);border-radius:9999px;background:var(--canvas);outline:none;
  font-family:inherit;letter-spacing:-0.374px;color:var(--ink)}
.search:focus{border-color:var(--primary-focus);outline:2px solid var(--primary-focus);outline-offset:0}
.search::placeholder{color:var(--ink-48)}
.hits{list-style:none;max-width:560px;margin:8px auto 0;background:var(--canvas);border:1px solid var(--hairline);border-radius:18px;overflow:hidden;text-align:left}
.hits li a{display:block;padding:12px 20px;color:var(--ink);border-bottom:1px solid var(--divider-soft)}
.hits li:last-child a{border-bottom:0}
.hits li a:hover{background:var(--pearl);text-decoration:none}
.hits b{display:block;font-size:15px;font-weight:600}
.hits small{color:var(--ink-48);font-size:12px;letter-spacing:-0.12px}
.hits .none{padding:14px 20px;color:var(--ink-48);font-size:14px}

/* 카테고리 그리드 — store utility card */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding-bottom:16px}
.card{background:var(--canvas);border:1px solid var(--hairline);border-radius:18px;padding:24px;
  color:var(--ink);display:flex;flex-direction:column;gap:8px;transition:border-color .15s ease}
.card:hover{text-decoration:none;border-color:#c8c8cd}
.card:active{transform:scale(0.98)}
.card h2{font-size:17px;font-weight:600;letter-spacing:-0.374px}
.card p{color:var(--ink-48);font-size:14px;font-weight:400;line-height:1.43;letter-spacing:-0.224px}
.count{margin-top:auto;color:var(--primary);font-size:14px;font-weight:400;letter-spacing:-0.224px}

/* 브레드크럼 */
.crumb{font-size:12px;color:var(--ink-48);letter-spacing:-0.12px;padding:20px 0 0;display:flex;gap:8px;flex-wrap:wrap}
.crumb a{color:var(--ink-48)}
.crumb b{color:var(--ink);font-weight:600}

/* 카테고리 페이지 */
.cat-title{font-family:"SF Pro Display",system-ui,-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Noto Sans KR',sans-serif;
  font-weight:600;font-size:clamp(28px,4.4vw,40px);line-height:1.1;letter-spacing:-0.28px;margin-top:28px}
.cat-desc{color:var(--ink-48);margin-top:10px;font-size:17px}
.art-list{list-style:none;margin-top:32px;counter-reset:n;border-top:1px solid var(--hairline)}
.art-list li{counter-increment:n;border-bottom:1px solid var(--divider-soft)}
.art-list li a{display:flex;align-items:center;gap:16px;padding:15px 4px;color:var(--ink);font-weight:400;font-size:17px}
.art-list li a::before{content:counter(n,decimal-leading-zero);color:var(--ink-48);font-size:12px;letter-spacing:0}
.art-list li a:hover{text-decoration:none;color:var(--primary)}

/* 아티클 — 플랫 에디토리얼 (한 줄 32~38자, 단계별 따라하기 최적화) */
.doc{max-width:660px;margin:0 auto;padding:28px 0 0;overflow-wrap:break-word;font-size:17px;line-height:1.76}
.doc-title{font-family:"SF Pro Display",system-ui,-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Noto Sans KR',sans-serif;
  font-weight:600;font-size:clamp(28px,4.4vw,40px);line-height:1.14;letter-spacing:-0.28px;
  margin:12px 0 40px;padding-bottom:28px;border-bottom:1px solid var(--hairline)}
.doc p{margin:14px 0}
.doc h1,.doc h2,.doc h3,.doc h4{font-weight:700;letter-spacing:-0.374px;margin:52px 0 14px;scroll-margin-top:64px;line-height:1.25}
.doc h1{font-size:27px}.doc h2{font-size:23px}.doc h3{font-size:20px}.doc h4{font-size:17.5px}
.doc h1 a,.doc h2 a,.doc h3 a,.doc h4 a{color:inherit}
.doc strong,.doc b{font-weight:700}
.doc ul,.doc ol{padding-left:24px;margin:14px 0}
.doc li{margin:7px 0}
.doc blockquote{border-left:3px solid var(--primary);background:var(--pearl);border-radius:0 12px 12px 0;padding:12px 20px;margin:24px 0;color:var(--ink)}
.doc blockquote p{margin:4px 0}
.doc hr{border:0;border-top:1px solid var(--hairline);margin:48px 0}
.doc table{border-collapse:collapse;width:100%;margin:22px 0;font-size:14.5px;letter-spacing:-0.224px;line-height:1.55}
.doc td,.doc th{border:1px solid var(--hairline);padding:10px 13px}
.doc th{background:var(--parchment);font-weight:600}
/* 스크린샷: 단계 사이 시각적 구분이 명확하도록 여백 확대 */
.doc img{margin:28px auto}
.doc img + p{margin-top:18px}

/* 링크 미리보기 → 컴팩트 바로가기 카드 */
.link-card{display:flex;flex-direction:column;gap:2px;max-width:420px;margin:16px 0;
  background:var(--canvas);border:1px solid var(--hairline);border-radius:18px;padding:14px 20px;
  color:var(--ink);transition:border-color .15s ease}
.link-card:hover{text-decoration:none;border-color:#c8c8cd}
.link-card:active{transform:scale(0.98)}
.link-card small{color:var(--primary);font-size:12px;font-weight:400;letter-spacing:-0.12px}
.link-card b{font-size:15px;font-weight:600;letter-spacing:-0.224px;word-break:break-all}

.doc p.gap{margin:20px 0;padding:0;height:0}

/* 첨부파일 다운로드 카드 */
.file-card{display:flex;flex-direction:column;gap:2px;max-width:420px;margin:16px 0;
  background:var(--canvas);border:1px solid var(--hairline);border-radius:18px;padding:14px 20px;
  color:var(--ink);transition:border-color .15s ease}
.file-card:hover{text-decoration:none;border-color:#c8c8cd}
.file-card:active{transform:scale(0.98)}
.file-card b{font-size:15px;font-weight:600;letter-spacing:-0.224px;word-break:break-all}
.file-card small{color:var(--primary);font-size:13px;font-weight:400}

/* 이전/다음 — 유틸리티 카드 */
.pn{display:flex;gap:20px;max-width:720px;margin:56px auto 0}
.pn a{flex:1;min-width:0;background:var(--canvas);border:1px solid var(--hairline);border-radius:18px;
  padding:16px 20px;color:var(--ink);font-size:14px;font-weight:600;letter-spacing:-0.224px;transition:border-color .15s ease}
.pn a:hover{text-decoration:none;border-color:#c8c8cd}
.pn a:active{transform:scale(0.98)}
.pn small{display:block;color:var(--ink-48);font-weight:400;font-size:12px;letter-spacing:-0.12px;margin-bottom:4px}
.pn-next{text-align:right}
.pn span{flex:1}

/* 반응형 */
@media(max-width:833px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .hero{padding:56px 0 40px}
}
@media(max-width:640px){
  .grid{grid-template-columns:1fr;gap:14px}
  .pn{flex-direction:column;gap:12px}
  .pn-next{text-align:left}
  .hero h1{font-size:34px}
}
@media(max-width:419px){
  .hero h1{font-size:28px}
}