/* ============================================================================
   Korea Industry Insights — blog chrome
   레이아웃·효과·포인트칼라·아이콘은 digitalapplied.com/blog 차용
   (shadcn/zinc 시스템 + 블루 포인트 #1447e6 + Lucide 아이콘). 폰트는 Poppins 유지.
   ========================================================================== */
:root{
  --bg:#ffffff;
  --surface:#fafafa;        /* feed 패널(zinc-50) */
  --fg:#18181b;             /* 제목 zinc-900 */
  --body:#3f3f46;           /* 본문 zinc-700 */
  --muted:#71717b;          /* 보조 zinc-500 */
  --hero-head:#52525b;      /* hero H1 회색 라인 zinc-600 (lede보다 진하게 → 2단계 위계) */
  --faint:#a1a1aa;          /* zinc-400 */
  --border:#e4e4e7;         /* zinc-200 */
  --border-strong:#d4d4d8;  /* zinc-300 */
  --chip:#f4f4f5;           /* zinc-100 */
  --ink:#18181b;            /* 검정 버튼 zinc-900 */

  --accent:#1447e6;         /* 포인트 블루(blue-700) */
  --accent-hi:#3b82f6;      /* 그라데이션 하이라이트(blue-500) */
  --accent-50:#eff6ff;      /* blue-50 */
  --accent-200:#bfdbfe;     /* blue-200 (hover border) */
  --vb-accent:#1447e6;       /* 비주얼블록 제품 accent (render_detail 인라인 override) */
  --vb-accent-soft:#e8eefe;  /* accent 옅은 틴트 폴백 */

  --radius:14px;            /* 상세 이미지 등 */
  --radius-card:12px;       /* 카드 rounded-xl */
  --radius-sm:8px;
  --radius-pill:999px;
  --maxw:1384px;          /* 메인 폭 = 상세 셸 폭(--postw)에 통일 (항목1) */
  --readw:720px;          /* 상세 본문 폭(유지) */
  --postw:1384px;         /* 상세 3-단 전체 폭 = 220+48+720+48+300 트랙 + 48 패딩 (여백 0) */
  --muted-on-light:#646469; /* 흰/연회색 위 본문급 텍스트 4.5:1+ (WCAG AA) */
  --shadow-sm:0 1px 2px rgba(16,24,40,.05);
  /* hover shadow: 중립(레퍼런스 Tailwind shadow-lg 계열). 블루는 hover 보더로만 표현 */
  --shadow-lg:0 10px 15px -3px rgba(16,24,40,.10),0 4px 6px -4px rgba(16,24,40,.08);
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:'Poppins',system-ui,-apple-system,sans-serif;
  color:var(--body);background:var(--bg);line-height:1.65;
  font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
a{color:inherit}
svg{flex:none}
/* 키보드 포커스 가시성 (WCAG 2.4.7) — 마우스 클릭에는 안 뜨고 키보드 탐색에만 */
a:focus-visible,button:focus-visible,input:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* ---------------------------------------------------------------- header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:64px}
.brand{justify-self:start;display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--fg)}
.brand-text{font-weight:700;font-size:16.5px;letter-spacing:-.01em}
.logo-mark{
  display:grid;place-items:center;width:32px;height:32px;border-radius:9px;color:#fff;
  font-weight:800;font-size:13px;letter-spacing:.03em;
  background:linear-gradient(135deg,var(--accent),var(--accent-hi));
  box-shadow:0 1px 3px -1px rgba(20,71,230,.35);
}
.site-nav{justify-self:center;display:flex;align-items:center;gap:8px}
.site-nav>a{
  text-decoration:none;color:var(--muted);font-size:14px;font-weight:500;
  padding:8px 12px;border-radius:var(--radius-sm);transition:color .15s,background .15s;
}
.site-nav>a:hover{color:var(--fg);background:var(--chip)}
.header-actions{justify-self:end;display:flex;align-items:center;gap:8px}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  color:#fafafa!important;background:var(--ink);font-weight:500;font-size:14px;
  padding:8px 14px;border-radius:10px;text-decoration:none;
  transition:transform .15s,box-shadow .15s,opacity .15s;
}
.nav-cta:hover{opacity:.92;transform:translateY(-1px);box-shadow:0 8px 18px -8px rgba(0,0,0,.5)}
.nav-cta svg{width:14px;height:14px}

/* ------------------------------------------------------------------ hero */
.hero{position:relative;overflow:hidden;padding:96px 0 56px;text-align:center}
.hero::before{ /* 은은한 그리드+상단 블루 글로우 */
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(620px 320px at 50% -8%,rgba(20,71,230,.10),transparent 70%),
    linear-gradient(var(--border) 1px,transparent 1px) 0 0/100% 56px,
    linear-gradient(90deg,var(--border) 1px,transparent 1px) 0 0/56px 100%;
  -webkit-mask-image:radial-gradient(80% 75% at 50% 22%,#000,transparent 100%);
          mask-image:radial-gradient(80% 75% at 50% 22%,#000,transparent 100%);
  opacity:.5;
}
.hero-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:500;letter-spacing:.01em;
  color:var(--accent);background:var(--accent-50);
  border:1px solid var(--accent-200);border-radius:var(--radius-pill);
  padding:5px 13px;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(32px,4.6vw,54px);font-weight:700;letter-spacing:-.025em;line-height:1.12;
  color:var(--hero-head);  /* 그라데이션 미지원 브라우저 폴백 */
}
.hero h1 .accent{ /* 헤드라인 전체 블루 그라데이션 (항목2). 전체 텍스트가 이 span 안 */
  background:linear-gradient(100deg,#1d4ed8,#2563eb 38%,#3b82f6 70%,#60a5fa);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
/* background-clip:text 미지원 구형 브라우저 폴백 — 텍스트가 투명해지지 않게 단색 표시 */
@supports not ((-webkit-background-clip:text) or (background-clip:text)){
  .hero h1 .accent{color:var(--accent);-webkit-text-fill-color:currentColor;background:none}
}
.hero .lede{
  font-size:clamp(16px,1.7vw,19px);color:var(--muted);margin-top:22px;
  max-width:46ch;line-height:1.6;
}

/* toolbar: search + stats + category chips */
.toolbar{width:100%;max-width:720px;margin-top:40px;display:flex;flex-direction:column;align-items:center;gap:20px}
.search{position:relative;width:100%}
.search .search-ic{position:absolute;left:15px;top:50%;transform:translateY(-50%);
  color:var(--faint);display:grid;place-items:center}
.search .search-ic svg{width:17px;height:17px}
.search input{
  width:100%;height:48px;border:1px solid var(--border);border-radius:12px;
  background:#fff;padding:0 16px 0 42px;font:inherit;font-size:15px;color:var(--fg);
  box-shadow:var(--shadow-sm);transition:border-color .15s,box-shadow .15s;
}
.search input::placeholder{color:var(--faint)}
.search input:focus{outline:none;border-color:var(--accent);
  box-shadow:0 0 0 4px rgba(20,71,230,.12)}
.stats{font-size:13px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px}
.chips-ic{width:16px;height:16px;color:var(--faint);margin-right:2px}
.chip{
  font:inherit;font-size:13.5px;font-weight:500;line-height:1;cursor:pointer;
  color:var(--fg);background:#fff;border:1px solid var(--border);
  border-radius:8px;padding:8px 13px;transition:all .15s;
}
.chip:hover{border-color:var(--border-strong);background:var(--chip)}
.chip.is-active{background:var(--ink);color:#fafafa;border-color:var(--ink)}

/* ------------------------------------------------------------------ feed */
.feed{background:var(--surface);border-top:1px solid var(--border);
  padding:52px 0 84px;margin-top:30px}
.feed-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  flex-wrap:wrap;margin-bottom:30px}
.feed-head h2{font-size:30px;font-weight:700;letter-spacing:-.02em;color:var(--fg)}
.feed-head p{font-size:15px;color:var(--muted);margin-top:4px}
.count-pill{font-size:13px;color:var(--muted);background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-pill);padding:7px 15px;white-space:nowrap}

.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}

.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:border-color .3s,box-shadow .3s;
  animation:fade-up .5s both;animation-delay:calc(min(var(--d,0),7)*45ms);
}
.card:hover{border-color:var(--accent-200);box-shadow:var(--shadow-lg)}
.card-link{display:flex;flex-direction:column;height:100%;text-decoration:none;color:inherit}
.card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--chip);position:relative}
.card .thumb img{width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .3s ease}
.card:hover .thumb img{transform:scale(1.05)}
.card .thumb--empty{display:grid;place-items:center;color:var(--faint);
  background:linear-gradient(135deg,#f4f4f5,#eef2ff)}
.card .thumb--empty svg{width:34px;height:34px}
.card-body{padding:20px;display:flex;flex-direction:column;gap:9px;flex:1}
.badge{align-self:flex-start;display:inline-flex;align-items:center;font-size:11.5px;
  font-weight:500;color:var(--muted);background:var(--chip);border-radius:var(--radius-pill);
  padding:3px 10px;transition:background .3s,color .3s;letter-spacing:.005em}
.card:hover .badge{background:var(--accent-50);color:var(--accent)}
.card h2{font-size:18px;font-weight:700;line-height:1.34;color:var(--fg);
  letter-spacing:-.01em;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card .summary{font-size:13.5px;color:var(--muted);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:2px}
.tagpill{font-size:11.5px;color:var(--muted);background:#fff;border:1px solid var(--border);
  border-radius:7px;padding:2px 9px}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:auto;padding-top:13px;border-top:1px solid var(--border)}
.date{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--muted-on-light);
  white-space:nowrap}
.date svg{width:13px;height:13px}
.read-more{display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:600;color:var(--accent)}
.read-more svg{width:15px;height:15px;transition:transform .25s}
.card:hover .read-more svg{transform:translateX(4px)}

.empty{padding:72px 0;color:var(--muted);font-size:18px;text-align:center}
.no-results{padding:48px 0;color:var(--muted);font-size:15px;text-align:center}

/* ---------------------------------------------------------------- footer */
.site-footer{border-top:1px solid var(--border);background:#fff;padding:52px 0 30px}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:40px;align-items:start}
.footer-col--brand{max-width:38ch}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;
  font-size:15px;color:var(--fg)}
.footer-tag{color:var(--muted);font-size:14px;max-width:46ch;margin:12px 0 16px;line-height:1.6}
.footer-h{font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--fg);margin-bottom:14px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col ul a{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--muted);
  text-decoration:none;transition:color .15s}  /* ul 한정 — .footer-cta 색을 덮지 않게(특이도) */
.footer-col ul a:hover{color:var(--accent)}
.footer-col svg{width:15px;height:15px;flex:none}
.footer-cta{display:inline-flex;align-items:center;gap:8px;text-decoration:none;
  font-size:14px;font-weight:500;color:var(--accent);
  border:1px solid var(--accent-200);background:var(--accent-50);
  border-radius:10px;padding:9px 15px;transition:background .15s,transform .15s}
.footer-cta:hover{background:#e0ebff;transform:translateY(-1px)}
.footer-cta svg{width:16px;height:16px}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:40px auto 0;padding-top:22px;border-top:1px solid var(--border);
  font-size:13px;color:var(--muted)}
.footer-bottom a{color:var(--muted);text-decoration:none}
.footer-bottom a:hover{color:var(--accent)}
.footer-bottom .sep{color:var(--faint)}

/* ----------------------------------------------------------- legal page */
.legal-body{max-width:var(--readw);margin:0 auto;padding:44px 0 84px}
.legal-body h2{font-size:20px;font-weight:700;color:var(--fg);margin:30px 0 8px;letter-spacing:-.01em}
.legal-body p{font-size:15px;color:var(--body);line-height:1.72;margin:10px 0}
.legal-body .lead{font-size:16.5px;color:var(--fg);margin-bottom:20px}
.legal-body a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}

/* ------------------------------------------------------- detail (article) */
html{scroll-behavior:smooth}

/* 읽기 진행바 (sticky header 바로 아래 고정) */
.reading-progress{position:fixed;top:64px;left:0;right:0;height:3px;z-index:49;
  pointer-events:none;background:transparent}
.reading-progress>span{display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--accent),var(--accent-hi));
  box-shadow:0 0 8px rgba(20,71,230,.40);transition:width .1s linear}

/* 히어로 (좌측 정렬 · 은은한 그리드+상단 블루 글로우) */
.post-hero{position:relative;overflow:hidden;background:var(--bg);
  border-bottom:1px solid var(--border)}
.post-hero::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(680px 280px at 16% -22%,rgba(20,71,230,.10),transparent 70%),
    linear-gradient(var(--border) 1px,transparent 1px) 0 0/100% 52px,
    linear-gradient(90deg,var(--border) 1px,transparent 1px) 0 0/52px 100%;
  -webkit-mask-image:radial-gradient(92% 82% at 28% 0%,#000,transparent 100%);
          mask-image:radial-gradient(92% 82% at 28% 0%,#000,transparent 100%);
  opacity:.45}
.post-hero-inner{position:relative;z-index:1;max-width:var(--postw);margin:0 auto;
  padding:32px 24px 42px;text-align:left}
.post-hero .breadcrumb{margin-bottom:22px}
.post-hero .eyebrow{margin-bottom:18px}
.post-hero .eyebrow svg{width:13px;height:13px;margin-right:6px}
.post-hero h1{font-size:clamp(29px,3.7vw,45px);font-weight:800;letter-spacing:-.027em;
  line-height:1.12;color:var(--fg);max-width:22ch}
.post-hero .dek{margin-top:18px;font-size:clamp(15px,1.5vw,18px);line-height:1.6;
  color:var(--muted);max-width:62ch}
.post-meta{margin-top:24px;display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px}
.post-meta .hm{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--muted)}
.post-meta .hm svg{width:15px;height:15px;color:var(--faint)}

/* breadcrumb (공통) */
.breadcrumb{display:flex;align-items:center;gap:6px;flex-wrap:wrap;
  font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--muted);text-decoration:none;transition:color .15s}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb svg{width:14px;height:14px;color:var(--faint)}
.breadcrumb>span{color:var(--fg);font-weight:500;max-width:46ch;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}

/* 상세 페이지에선 헤더 폭을 셸 폭과 일치시켜 브랜드 로고 ↔ breadcrumb/h1/TOC 좌측 정렬 */
body.is-detail .site-header .container{max-width:var(--postw)}

/* 3-단 셸: [ TOC | 본문 720 | 광고 레일 ] */
.post-shell{max-width:var(--postw);margin:0 auto;padding:0 24px}
.post-layout{display:grid;
  grid-template-columns:220px minmax(0,var(--readw)) 300px;
  gap:48px;align-items:start;padding:44px 0 84px}
/* 트랙 고정핀: TOC 가 비어 display:none 돼도 본문/광고가 엉뚱한 트랙으로 밀리지 않게 */
.post-body{grid-column:2}
.post-aside{grid-column:3}

/* 왼쪽 가이드: sticky 목차(On this page) */
.post-toc{position:sticky;top:92px;align-self:start;max-height:calc(100vh - 120px);overflow:auto}
.post-toc:empty{display:none}
.toc-head{display:flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:11.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted-on-light)}
.toc-head svg{width:14px;height:14px}
.toc-list{list-style:none;margin:0;padding:0;border-left:1px solid var(--border)}
.toc-list a{display:flex;gap:10px;align-items:baseline;text-decoration:none;
  margin-left:-1px;padding:7px 0 7px 16px;border-left:2px solid transparent;
  color:var(--muted);font-size:13.5px;line-height:1.45;
  transition:color .15s,border-color .15s}
.toc-list a:hover{color:var(--fg)}
.toc-list a.is-active{color:var(--accent);border-left-color:var(--accent);font-weight:500}
.toc-num{flex:none;padding-top:1px;font-size:11px;font-weight:600;color:var(--muted-on-light);
  font-variant-numeric:tabular-nums}
.toc-list a.is-active .toc-num{color:var(--accent)}
.toc-text{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* 본문 (폭 720 유지 · 폰트 한 단계 작게) */
.post-body{min-width:0}
.post-body article{overflow-wrap:anywhere;word-break:break-word}  /* 긴 URL·토큰 줄바꿈 강제 */
.post-body article>h1{display:none}  /* 안전망: 본문 잔존 h1 숨김(히어로 h1 단일화) */
.post-body article>figure:first-child,.post-body article>p:first-child{margin-top:0}  /* 상단 정렬 */
.post-body article h2{font-size:22px;font-weight:700;letter-spacing:-.015em;color:var(--fg);
  margin:40px 0 12px;scroll-margin-top:96px}
.post-body article h3{font-size:16.5px;font-weight:600;color:var(--fg);
  margin:26px 0 8px;scroll-margin-top:96px}
.post-body article p{margin:14px 0;font-size:15px;color:var(--body);line-height:1.72}
.post-body article a{color:var(--accent);text-decoration:underline;text-underline-offset:2px;
  text-decoration-thickness:1px}
.post-body article ul,.post-body article ol{margin:14px 0;padding-left:22px;color:var(--body)}
.post-body article li{margin:7px 0;font-size:15px;line-height:1.7}
.post-body article img{max-width:100%;height:auto;border-radius:var(--radius);margin:0;
  border:1px solid var(--border)}
.post-body article figure{margin:26px 0}
.post-body article .lead{font-size:16.5px;line-height:1.65;color:var(--fg);margin:16px 0 22px}
.post-body article blockquote{margin:22px 0;padding:14px 18px;font-size:14px;line-height:1.65;
  color:var(--body);border-left:3px solid var(--accent);background:var(--accent-50);
  border-radius:0 8px 8px 0}
.post-body article blockquote strong{color:var(--fg)}
.post-body article table{width:100%;border-collapse:collapse;margin:22px 0;font-size:13.5px;
  display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}  /* 좁은 폭에서 가로 스크롤 */
.post-body article th,.post-body article td{border:1px solid var(--border);padding:9px 12px;
  text-align:left;line-height:1.5}
.post-body article th{background:var(--surface);font-weight:600;color:var(--fg)}
.post-body article .faq dt{margin-top:18px;font-size:15px;font-weight:600;color:var(--fg)}
.post-body article .faq dd{margin:6px 0 0;font-size:14.5px;color:var(--body);line-height:1.7}
.post-body article .disclaimer{margin-top:26px;font-size:12.5px;color:var(--muted-on-light)}
.post-body article .references{margin-top:34px;padding-top:20px;border-top:1px solid var(--border)}
.post-body article .references h2{margin-top:0;font-size:18px}
.post-body article .references a{font-size:13.5px}

/* CTA aside (assembler 산출 .blog-cta) */
.post-body .blog-cta{margin:34px 0 8px;padding:24px;
  border:1px solid var(--accent-200);background:var(--accent-50);border-radius:var(--radius-card)}
.post-body .blog-cta h3{margin-bottom:8px;font-size:18px;font-weight:700;color:var(--fg);
  letter-spacing:-.01em}
.post-body .blog-cta p{margin:0 0 16px;font-size:14px;color:var(--body);line-height:1.65}
.post-body .blog-cta__button{display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:10px;text-decoration:none;
  background:var(--ink);color:#fafafa;font-weight:500;font-size:14px;
  transition:transform .15s,opacity .15s}
.post-body .blog-cta__button:hover{opacity:.92;transform:translateY(-1px)}

/* 오른쪽 광고 레일 — 추후 Google AdSense 유닛 2~3개 자리(예약 placeholder) */
.post-aside{position:sticky;top:92px;align-self:start;display:flex;flex-direction:column;gap:24px;
  max-height:calc(100vh - 120px);overflow:auto}
.ad-slot{display:grid;place-items:center;min-height:250px;
  border:1px dashed var(--border-strong);border-radius:var(--radius-card);
  background:repeating-linear-gradient(45deg,#fafafa 0 10px,#f4f4f5 10px 20px)}
.ad-slot--tall{min-height:600px}  /* 300x600 skyscraper 모사 */
.ad-slot span{font-size:10.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted-on-light)}

/* 맨 위로 */
.to-top{position:fixed;right:24px;bottom:24px;z-index:48;width:44px;height:44px;
  display:grid;place-items:center;border:1px solid var(--border);border-radius:50%;
  background:#fff;color:var(--fg);cursor:pointer;box-shadow:var(--shadow-lg);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .2s,transform .2s,border-color .15s,color .15s}
.to-top.show{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{border-color:var(--accent-200);color:var(--accent)}
.to-top svg{width:19px;height:19px}

/* ===================================================================== */
/* 상세 페이지 다크+오렌지 (DESIGN_SPEC, 항목5) — body.is-detail 스코프      */
/* (privacy=is-legal 은 스코프 밖 → 라이트 유지)                           */
/* ===================================================================== */
body.is-detail{
  /* 포인트색 오렌지로 (헤더 로고·reading-progress·TOC active·본문 링크·blockquote·focus 자동 전환) */
  --accent:#f97316;--accent-hi:#fb923c;--accent-50:#fff7ed;--accent-200:#fed7aa;
  /* 다크 영역 전용 토큰 */
  --d-bg:#0a0a0a;--d-text:#f5f5f5;--d-muted:#9ca3af;--d-border:rgba(255,255,255,.10);
}
/* 다크 히어로 + 비대칭 글로우 (주황 좌상 0.12 / 보라 우하 0.10) */
body.is-detail .post-hero{
  background-color:#0a0a0a;
  background-image:
    radial-gradient(ellipse 600px 400px at 15% 20%,rgba(249,115,22,.12),transparent 60%),
    radial-gradient(ellipse 700px 500px at 85% 80%,rgba(139,92,246,.10),transparent 60%);
  border-bottom:1px solid var(--d-border);
}
body.is-detail .post-hero::before{display:none}  /* 라이트 그리드 제거 */
body.is-detail .post-hero-inner{padding:34px 24px 52px}
body.is-detail .breadcrumb,body.is-detail .breadcrumb a{color:var(--d-muted);
  font-family:'JetBrains Mono',ui-monospace,monospace;font-size:11.5px;letter-spacing:.04em;text-transform:uppercase}
body.is-detail .breadcrumb>span{color:var(--d-text)}
body.is-detail .breadcrumb a:hover{color:var(--accent)}
body.is-detail .breadcrumb svg{color:var(--d-muted)}

/* 메타 뱃지 줄 (투명+테두리, 첫 뱃지만 오렌지) */
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 24px}
.badge-pill{display:inline-flex;align-items:center;
  font-family:'JetBrains Mono',ui-monospace,monospace;font-size:11px;font-weight:500;
  letter-spacing:.1em;text-transform:uppercase;color:var(--d-muted);
  background:transparent;border:1px solid var(--d-border);border-radius:6px;padding:7px 13px}
.badge-pill--accent{color:var(--accent);border-color:rgba(249,115,22,.45)}

/* 거대 제목(Inter 800) + 강조단어(Playfair italic 오렌지) */
body.is-detail .post-hero h1{
  font-family:'Inter',system-ui,-apple-system,sans-serif;font-weight:800;
  font-size:clamp(40px,6vw,76px);line-height:1.05;letter-spacing:-.02em;color:#fff;max-width:none;
  overflow-wrap:break-word}  /* 초장문 단일 토큰 제목 모바일 가로 오버플로 방지 */
body.is-detail .post-hero h1 .ital{
  font-family:'Playfair Display',Georgia,serif;font-style:italic;font-weight:400;color:var(--accent)}
body.is-detail .post-hero .dek{
  margin-top:20px;font-family:'Poppins',sans-serif;font-size:clamp(17px,1.4vw,21px);
  line-height:1.6;color:var(--d-muted);max-width:720px}

/* 팀 byline (조직 명의) */
.post-byline{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:30px}
.bl-avatar{display:grid;place-items:center;width:46px;height:46px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,var(--accent),var(--accent-hi));color:#fff;
  font-family:'Inter',sans-serif;font-weight:700;font-size:15px;letter-spacing:.02em}
.bl-id{display:flex;flex-direction:column;gap:2px}
.bl-name{font-family:'Poppins',sans-serif;font-weight:600;font-size:15px;color:var(--d-text)}
.bl-title{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--d-muted)}
.bl-stats{display:flex;gap:26px;margin-left:auto;flex-wrap:wrap}
.bl-meta{display:flex;flex-direction:column;gap:3px}
.bl-k{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--d-muted)}
.bl-v{font-family:'Poppins',sans-serif;font-size:13.5px;color:var(--d-text)}

/* 통계 4카드 (다크 박스, 세로 구분선) */
.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);margin-top:42px;
  border:1px solid var(--d-border);border-radius:12px;overflow:hidden}
.stat-card{display:flex;flex-direction:column;gap:9px;padding:24px 22px;
  border-left:1px solid var(--d-border)}
.stat-card:first-child{border-left:0}
.sc-label{font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--d-muted)}
.sc-num{font-family:'Inter',sans-serif;font-weight:800;font-size:clamp(34px,4vw,56px);
  line-height:1;color:#fff;display:flex;align-items:baseline;gap:3px}
.sc-unit{font-size:.42em;font-weight:700;color:var(--accent)}
.sc-cap{font-family:'Poppins',sans-serif;font-size:12.5px;color:var(--d-muted);line-height:1.45}

/* 본문 폰트 상향 17px / line-height 1.8 (스펙 §4-6) */
body.is-detail .post-body article p,body.is-detail .post-body article li{font-size:17px;line-height:1.8}
body.is-detail .post-body article .lead{font-size:18.5px;line-height:1.7}
body.is-detail .toc-head{font-family:'JetBrains Mono',monospace;letter-spacing:.1em}

/* 우측 레일: SHARE DISPATCH (라이트 본문 영역) */
.share-box{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}
.share-h{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted-on-light);margin-bottom:4px}
.share-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:13.5px;font-weight:500;color:var(--fg);text-decoration:none;
  border:1px solid var(--border);border-radius:var(--radius-pill);padding:9px 14px;transition:all .15s}
.share-btn:hover{border-color:var(--accent-200);color:var(--accent)}
.share-btn svg{width:15px;height:15px}

/* --- a11y 대비 + 포인트색 누수 보정 (적대적 검토 반영) --------------------- */
/* 흰 본문 영역의 오렌지 텍스트 #f97316 은 2.2:1(AA 미달) → 더 진한 오렌지 #c2410b(5.18:1) */
body.is-detail .post-body article a,
body.is-detail .toc-list a.is-active,
body.is-detail .toc-list a.is-active .toc-num{color:#c2410b}
/* 라이트 본문 영역 키보드 포커스 링도 진한 오렌지(비텍스트 3:1↑). 다크 히어로/공유버튼 hover 는 밝은 오렌지 유지 */
body.is-detail .post-body :focus-visible,
body.is-detail .post-toc :focus-visible,
body.is-detail .post-aside :focus-visible{outline-color:#c2410b}
/* 하드코딩 블루 그림자/글로우 → 상세에선 오렌지(단일 포인트색 §5) */
body.is-detail .reading-progress>span{box-shadow:0 0 8px rgba(249,115,22,.45)}
body.is-detail .logo-mark{box-shadow:0 1px 3px -1px rgba(249,115,22,.35)}
/* 통계카드 개수 적응형 — 1~3개도 빈 트랙 없이 균등(데스크톱). 4개는 base repeat(4,1fr) */
.stat-cards--1{grid-template-columns:1fr}
.stat-cards--2{grid-template-columns:repeat(2,1fr)}
.stat-cards--3{grid-template-columns:repeat(3,1fr)}

/* ---------------------------------------------------------------- motion */
@keyframes fade-up{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.hero .eyebrow{animation:fade-up .55s both}
.hero h1{animation:fade-up .6s .06s both}
.hero .lede{animation:fade-up .6s .12s both}
.hero .toolbar{animation:fade-up .6s .18s both}
.post-hero .eyebrow{animation:fade-up .5s both}
.post-hero h1{animation:fade-up .6s .05s both}
.post-hero .dek{animation:fade-up .6s .1s both}
.post-hero .post-meta{animation:fade-up .6s .15s both}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* ------------------------------------------------------------ responsive */
/* ≤1383: 광고 레일 접고 2-단(TOC|본문). --postw(1384) 미만에서 전환해 1381~1383 오버플로 데드존 제거 */
@media(max-width:1383px){
  body.is-detail .site-header .container{max-width:1016px}
  .post-shell,.post-hero-inner{max-width:1016px}
  .post-layout{grid-template-columns:200px minmax(0,var(--readw));gap:44px}
  .post-aside{display:none}
}
@media(max-width:1024px){
  .card-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:880px){
  .footer-inner{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col--brand{grid-column:1 / -1;max-width:none}
}
@media(max-width:520px){
  .footer-inner{grid-template-columns:1fr}
}
/* ≤920: 단일 칼럼 — 목차는 본문 위 정적 박스로 이동(스크롤스파이 유지) */
@media(max-width:920px){
  body.is-detail .site-header .container{max-width:760px}
  .post-shell,.post-hero-inner{max-width:760px}
  .post-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:28px}
  .post-body,.post-aside{grid-column:auto}
  .post-toc{position:static;order:-1;max-height:none;overflow:visible;margin-bottom:26px}
  .post-toc:not(:empty){padding:16px 18px;border:1px solid var(--border);
    border-radius:var(--radius-card);background:var(--surface)}
  /* 상세 byline·통계 카드 모바일 재배치 */
  .bl-stats{margin-left:0;width:100%;gap:20px}
  .stat-cards{grid-template-columns:repeat(2,1fr)}
  .stat-card{border-left:1px solid var(--d-border);border-top:1px solid var(--d-border)}
  .stat-card:nth-child(odd){border-left:0}
  .stat-card:nth-child(-n+2){border-top:0}
  /* 모바일: 공유 레일을 본문 아래로(광고 슬롯은 숨김) */
  .post-aside{position:static;max-height:none;overflow:visible}
  .post-aside .ad-slot{display:none}
}
@media(max-width:680px){
  .site-nav{display:none}
  .brand-text{display:none}
  .header-inner{grid-template-columns:auto 1fr;justify-items:start}
  .header-actions{justify-self:end}
  .hero{padding:60px 0 32px}
  .feed{padding:40px 0 60px}
  .feed-head h2{font-size:25px}
  .card-grid{grid-template-columns:1fr;gap:20px}
  .post-hero-inner{padding:24px 20px 30px}
  .post-shell{padding:0 20px}
  .to-top{right:16px;bottom:16px;width:40px;height:40px}
}

/* ===== 비주얼블록 (제품 accent = --vb-accent, 기존 --accent 카스케이드와 독립) ===== */
.vb-wrap{margin:28px 0}
.vb-title{font-weight:600;font-size:14px;color:var(--fg);margin:0 0 10px;
  letter-spacing:.01em}
.vb{font-size:14.5px;line-height:1.5}

/* step_flow */
.vb-stepflow{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.vb-step{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;
  border:1px solid var(--border);border-left:3px solid var(--vb-accent);
  border-radius:10px;background:var(--surface)}
.vb-step-n{flex:0 0 26px;height:26px;display:grid;place-items:center;border-radius:50%;
  background:var(--vb-accent);color:#fff;font-weight:700;font-size:13px}
.vb-step-l{margin:0;font-weight:600;color:var(--fg)}
.vb-step-d{margin:3px 0 0;color:var(--muted-on-light)}

/* comparison */
.vb-compare{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--border);
  border-radius:10px;overflow:hidden}
.vb-compare th,.vb-compare td{padding:9px 12px;text-align:left;
  border-bottom:1px solid var(--border);vertical-align:top}
.vb-compare thead th{background:var(--vb-accent);color:#fff;font-weight:600;font-size:13px}
.vb-compare tbody .vb-compare-label{background:var(--vb-accent-soft);font-weight:600;
  color:var(--fg)}
.vb-compare tbody tr:last-child th,.vb-compare tbody tr:last-child td{border-bottom:none}

/* decision_tree */
.vb-decision{border:1px solid var(--border);border-radius:10px;padding:14px 16px;
  background:var(--surface)}
.vb-dec-root{margin:0 0 10px;font-weight:600;color:var(--fg)}
.vb-branches{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.vb-branch{display:flex;gap:10px;align-items:center}
.vb-branch-c{flex:0 0 auto;padding:3px 10px;border-radius:var(--radius-pill,999px);
  background:var(--vb-accent-soft);color:var(--fg);font-weight:600;font-size:13px}
.vb-branch-o{color:var(--body)}
.vb-branch-o::before{content:"→";margin-right:8px;color:var(--vb-accent);font-weight:700}

/* callout */
.vb-callout{border-radius:10px;padding:13px 16px;border:1px solid var(--border);
  border-left:4px solid var(--vb-accent);background:var(--vb-accent-soft)}
.vb-callout-t{margin:0 0 4px;font-weight:700;color:var(--fg)}
.vb-callout-b{margin:0;color:var(--body)}
.vb-callout--warning{border-left-color:#c2410b;background:#fff7ed}
.vb-callout--warning .vb-callout-t{color:#c2410b}
.vb-callout--tip{border-left-color:#15803d;background:#f0fdf4}
.vb-callout--note{border-left-color:var(--vb-accent)}

/* checklist */
.vb-checklist{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.vb-check{display:flex;gap:10px;align-items:baseline;padding:8px 12px;
  border:1px solid var(--border);border-radius:8px}
.vb-check-l{font-weight:500;color:var(--fg)}
.vb-check-l::before{content:"✓";margin-right:9px;color:var(--vb-accent);font-weight:800}
.vb-check-n{margin-left:auto;color:var(--muted-on-light);font-size:13px}

@media (max-width:640px){
  .vb-compare{font-size:13px;display:block;overflow-x:auto}
  .vb-check{flex-wrap:wrap}
  .vb-check-n{margin-left:34px}
  /* decision_tree: 좁은 화면에선 조건 핀 + 결과를 세로 스택(긴 조건 가로 오버플로 방지) */
  .vb-branch{flex-direction:column;align-items:flex-start;gap:4px}
  .vb-branch-c{max-width:100%}
  .vb-branch-o::before{display:none}
}