:root {
  --blcg-bg: #ffffff;
  --blcg-panel: #f6f8f8;
  --blcg-panel-2: #eef2f1;
  --blcg-text: #07101c;
  --blcg-muted: #65707d;
  --blcg-line: #dfe5e3;
  --blcg-accent: #10a37f;
  --blcg-accent-dark: #087d62;
  --blcg-code: #0d1723;
  --blcg-code-text: #dffcf4;
  --blcg-header: rgba(255,255,255,.96);
  --blcg-shadow: 0 18px 50px rgba(13, 26, 38, .08);
}
:root[data-blcg-theme="dark"] {
  --blcg-bg: #0d1218;
  --blcg-panel: #151c23;
  --blcg-panel-2: #1c252d;
  --blcg-text: #edf5f2;
  --blcg-muted: #9aa9a5;
  --blcg-line: #2b363d;
  --blcg-accent: #42d2a7;
  --blcg-accent-dark: #7ae5c4;
  --blcg-code: #070b10;
  --blcg-code-text: #c8f8e9;
  --blcg-header: rgba(13,18,24,.95);
  --blcg-shadow: 0 18px 50px rgba(0,0,0,.28);
}
html { scroll-behavior: smooth; }
body.blcg-page { margin: 0; color: var(--blcg-text); background: var(--blcg-bg); font-family: Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", Arial, sans-serif; font-size: 16px; line-height: 1.75; }
.blcg-page *, .blcg-page *::before, .blcg-page *::after { box-sizing: border-box; }
.blcg-page a { color: inherit; text-decoration: none; }
.blcg-page button, .blcg-page input { font: inherit; }
.blcg-header { position: fixed; z-index: 1000; inset: 0 0 auto 0; height: 68px; display: flex; align-items: center; gap: 32px; padding: 0 26px; border-bottom: 1px solid var(--blcg-line); background: var(--blcg-header); backdrop-filter: blur(18px); }
.admin-bar .blcg-header { top: 32px; }
.blcg-brand { min-width: 250px; display: flex; align-items: center; gap: 9px; letter-spacing: -.02em; }
.blcg-brand > span { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 9px; color: #fff; background: var(--blcg-accent); font-family: Georgia, serif; font-size: 19px; font-weight: 700; }
.blcg-brand strong { font-size: 15px; letter-spacing: .07em; }
.blcg-brand em { color: var(--blcg-accent-dark); font-family: Georgia, serif; font-size: 18px; font-style: italic; }
.blcg-header > nav { display: flex; align-items: center; gap: 26px; height: 100%; }
.blcg-header > nav a { position: relative; color: var(--blcg-muted); font-size: 14px; font-weight: 650; }
.blcg-header > nav a:hover, .blcg-header > nav a.is-current { color: var(--blcg-text); }
.blcg-header > nav a.is-current::after { content: ""; position: absolute; left: 0; right: 0; bottom: -23px; height: 2px; background: var(--blcg-accent); }
.blcg-header-actions { margin-left: auto; display: flex; align-items: center; gap: 9px; }
.blcg-theme-toggle, .blcg-mobile-toggle { width: 38px; height: 38px; border: 1px solid var(--blcg-line); border-radius: 10px; color: var(--blcg-text); background: var(--blcg-panel); cursor: pointer; }
.blcg-mobile-toggle { display: none; }
.blcg-contact { display: inline-flex; align-items: center; min-height: 40px; padding: 0 16px; border-radius: 10px; color: #fff !important; background: var(--blcg-text); font-size: 13px; font-weight: 750; }
:root[data-blcg-theme="dark"] .blcg-contact { color: #07101c !important; background: #eef7f4; }
.blcg-sidebar { position: fixed; z-index: 900; inset: 68px auto 0 0; width: 280px; padding: 24px 18px 50px; overflow-y: auto; border-right: 1px solid var(--blcg-line); background: var(--blcg-panel); }
.admin-bar .blcg-sidebar { top: 100px; }
.blcg-search, .blcg-hero-search { display: flex; align-items: center; gap: 8px; border: 1px solid var(--blcg-line); border-radius: 11px; background: var(--blcg-bg); }
.blcg-search { height: 44px; padding: 0 10px; }
.blcg-search > span, .blcg-hero-search > span { color: var(--blcg-muted); font-size: 22px; line-height: 1; }
.blcg-search input, .blcg-hero-search input { min-width: 0; width: 100%; border: 0 !important; outline: 0; box-shadow: none !important; color: var(--blcg-text); background: transparent; }
.blcg-search input::placeholder, .blcg-hero-search input::placeholder { color: var(--blcg-muted); }
.blcg-search kbd, .blcg-hero-search kbd { padding: 1px 6px; border: 1px solid var(--blcg-line); border-radius: 5px; color: var(--blcg-muted); background: var(--blcg-panel); font-family: inherit; font-size: 10px; white-space: nowrap; }
.blcg-sidebar nav { padding: 12px 4px; }
.blcg-sidebar nav > strong { display: block; margin: 22px 8px 7px; color: var(--blcg-muted); font-size: 10px; letter-spacing: .13em; text-transform: uppercase; }
.blcg-sidebar nav > a { display: block; margin: 2px 0; padding: 8px 10px; border-radius: 8px; color: var(--blcg-muted); font-size: 13px; line-height: 1.45; }
.blcg-sidebar nav > a:hover { color: var(--blcg-text); background: var(--blcg-panel-2); }
.blcg-sidebar nav > a.is-active { color: var(--blcg-accent-dark); background: color-mix(in srgb, var(--blcg-accent) 12%, transparent); font-weight: 750; }
.blcg-search-empty, .blcg-global-empty { padding: 28px; color: var(--blcg-muted); text-align: center; }
.blcg-main { min-height: 100vh; margin-left: 280px; padding-top: 68px; background: var(--blcg-bg); }
.admin-bar .blcg-main { padding-top: 100px; }
.blcg-archive-hero { position: relative; overflow: hidden; padding: 88px clamp(34px, 7vw, 108px) 72px; border-bottom: 1px solid var(--blcg-line); background: linear-gradient(140deg, var(--blcg-bg) 0%, var(--blcg-panel) 100%); }
.blcg-archive-hero::after { content: "B"; position: absolute; right: 4%; top: -90px; color: color-mix(in srgb, var(--blcg-accent) 7%, transparent); font-family: Georgia, serif; font-size: 430px; font-weight: 700; line-height: 1; pointer-events: none; }
.blcg-eyebrow { position: relative; z-index: 1; margin: 0 0 18px; color: var(--blcg-accent-dark); font-size: 12px; font-weight: 800; letter-spacing: .18em; }
.blcg-archive-hero h1 { position: relative; z-index: 1; max-width: 800px; margin: 0; color: var(--blcg-text); font-family: Georgia, "Times New Roman", serif; font-size: clamp(42px, 5vw, 70px); line-height: 1.1; letter-spacing: -.045em; }
.blcg-archive-hero > p:not(.blcg-eyebrow) { position: relative; z-index: 1; max-width: 690px; margin: 24px 0 34px; color: var(--blcg-muted); font-size: 18px; }
.blcg-hero-search { position: relative; z-index: 1; width: min(660px, 100%); min-height: 58px; padding: 0 16px; border-color: color-mix(in srgb, var(--blcg-accent) 35%, var(--blcg-line)); box-shadow: var(--blcg-shadow); }
.blcg-archive-content { width: min(1120px, calc(100% - 64px)); margin: 0 auto; padding: 72px 0 100px; }
.blcg-card-section + .blcg-card-section { margin-top: 68px; }
.blcg-section-heading { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.blcg-section-heading > span { color: var(--blcg-accent-dark); font-family: Georgia, serif; font-size: 15px; font-weight: 700; }
.blcg-section-heading h2 { margin: 0; color: var(--blcg-text); font-family: Georgia, "Times New Roman", serif; font-size: 30px; letter-spacing: -.03em; }
.blcg-card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px; }
.blcg-guide-card { position: relative; min-height: 220px; padding: 26px; overflow: hidden; border: 1px solid var(--blcg-line); border-radius: 16px; background: var(--blcg-bg); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.blcg-guide-card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--blcg-accent) 55%, var(--blcg-line)); box-shadow: var(--blcg-shadow); }
.blcg-card-number { display: block; margin-bottom: 30px; color: var(--blcg-accent-dark); font-family: Georgia, serif; font-size: 13px; }
.blcg-guide-card h3 { margin: 0 0 9px; color: var(--blcg-text); font-size: 20px; letter-spacing: -.03em; }
.blcg-guide-card p { margin: 0; color: var(--blcg-muted); font-size: 14px; line-height: 1.65; }
.blcg-guide-card em { position: absolute; left: 26px; bottom: 22px; color: var(--blcg-accent-dark); font-size: 12px; font-style: normal; font-weight: 750; }
.blcg-guide-card em b { display: inline-block; margin-left: 5px; transition: transform .2s ease; }
.blcg-guide-card:hover em b { transform: translateX(4px); }
.blcg-doc-layout { display: grid; grid-template-columns: minmax(0, 800px) 220px; gap: 58px; width: min(1120px, calc(100% - 70px)); margin: 0 auto; padding: 64px 0 90px; }
.blcg-article { min-width: 0; }
.blcg-breadcrumb { display: flex; gap: 8px; margin-bottom: 26px; color: var(--blcg-muted); font-size: 12px; }
.blcg-breadcrumb a:hover { color: var(--blcg-accent-dark); }
.blcg-article-header { position: relative; margin-bottom: 48px; padding-bottom: 38px; border-bottom: 1px solid var(--blcg-line); }
.blcg-article-header h1 { max-width: 700px; margin: 0; color: var(--blcg-text); font-family: Georgia, "Times New Roman", serif; font-size: clamp(40px, 5vw, 58px); line-height: 1.14; letter-spacing: -.045em; }
.blcg-article-header p { max-width: 680px; margin: 18px 0 0; color: var(--blcg-muted); font-size: 18px; }
.blcg-copy-page { position: absolute; right: 0; top: 4px; padding: 8px 12px; border: 1px solid var(--blcg-line); border-radius: 8px; color: var(--blcg-muted); background: var(--blcg-panel); cursor: pointer; font-size: 12px; }
.blcg-article-content { color: var(--blcg-text); }
.blcg-article-content .blcg-lead { margin: 0 0 44px; color: var(--blcg-muted); font-size: 19px; line-height: 1.8; }
.blcg-article-content h2, .blcg-article-content h3 { scroll-margin-top: 104px; color: var(--blcg-text); letter-spacing: -.035em; }
.blcg-article-content h2 { margin: 62px 0 18px; padding-top: 4px; font-family: Georgia, "Times New Roman", serif; font-size: 31px; }
.blcg-article-content h3 { margin: 38px 0 12px; font-size: 21px; }
.blcg-article-content p { margin: 0 0 20px; }
.blcg-article-content a { color: var(--blcg-accent-dark); text-decoration: underline; text-underline-offset: 3px; }
.blcg-article-content ul, .blcg-article-content ol { margin: 16px 0 26px; padding-left: 24px; }
.blcg-article-content li { margin: 9px 0; padding-left: 5px; }
.blcg-article-content code { padding: 2px 6px; border-radius: 5px; color: var(--blcg-accent-dark); background: var(--blcg-panel); font-family: "SFMono-Regular", Consolas, monospace; font-size: .88em; }
.blcg-article-content pre { position: relative; margin: 24px 0 32px; padding: 24px 68px 24px 24px; overflow: auto; border: 1px solid #22303b; border-radius: 13px; color: var(--blcg-code-text); background: var(--blcg-code); line-height: 1.7; }
.blcg-article-content pre code { padding: 0; color: inherit; background: transparent; }
.blcg-copy-code { position: absolute; right: 12px; top: 12px; padding: 5px 9px; border: 1px solid #35434d; border-radius: 6px; color: #b8c6c2; background: #17232c; cursor: pointer; font-size: 11px; }
.blcg-callout { margin: 26px 0; padding: 18px 20px; border: 1px solid var(--blcg-line); border-left: 4px solid var(--blcg-accent); border-radius: 10px; background: var(--blcg-panel); }
.blcg-callout strong { display: block; margin-bottom: 5px; font-size: 13px; }
.blcg-callout p { margin: 0; color: var(--blcg-muted); font-size: 14px; }
.blcg-callout.is-warning { border-left-color: #e7a321; }
.blcg-callout.is-danger { border-left-color: #dd4e4e; }
.blcg-article-content table { width: 100%; margin: 26px 0 34px; border-collapse: collapse; border: 1px solid var(--blcg-line); font-size: 14px; }
.blcg-article-content th, .blcg-article-content td { padding: 13px 15px; border-bottom: 1px solid var(--blcg-line); text-align: left; vertical-align: top; }
.blcg-article-content th { background: var(--blcg-panel); }
.blcg-checklist { list-style: none; padding-left: 0 !important; }
.blcg-checklist li { position: relative; padding-left: 28px; }
.blcg-checklist li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--blcg-accent-dark); font-weight: 800; }
.blcg-link-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 22px 0 38px; }
.blcg-link-grid a { padding: 18px; border: 1px solid var(--blcg-line); border-radius: 11px; text-decoration: none; background: var(--blcg-panel); }
.blcg-link-grid strong, .blcg-link-grid span { display: block; }
.blcg-link-grid span { margin-top: 4px; color: var(--blcg-muted); font-size: 12px; }
.blcg-source { margin-top: 48px !important; padding-top: 20px; border-top: 1px solid var(--blcg-line); color: var(--blcg-muted); font-size: 12px; }
.blcg-toc { position: sticky; top: 104px; align-self: start; max-height: calc(100vh - 130px); overflow-y: auto; padding-left: 18px; border-left: 1px solid var(--blcg-line); }
.admin-bar .blcg-toc { top: 136px; }
.blcg-toc > strong { display: block; margin-bottom: 13px; color: var(--blcg-muted); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.blcg-toc a { display: block; margin: 8px 0; color: var(--blcg-muted); font-size: 12px; line-height: 1.45; }
.blcg-toc a:hover { color: var(--blcg-accent-dark); }
.blcg-toc a.level-3 { padding-left: 10px; }
.blcg-prev-next { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 70px; padding-top: 26px; border-top: 1px solid var(--blcg-line); }
.blcg-prev-next a { min-height: 86px; padding: 15px; border: 1px solid var(--blcg-line); border-radius: 11px; background: var(--blcg-panel); }
.blcg-prev-next a.is-next { text-align: right; }
.blcg-prev-next small, .blcg-prev-next strong { display: block; }
.blcg-prev-next small { color: var(--blcg-muted); font-size: 10px; }
.blcg-prev-next strong { margin-top: 5px; font-size: 13px; }
.blcg-feedback { display: flex; align-items: center; gap: 8px; margin-top: 30px; padding: 18px; border-radius: 11px; background: var(--blcg-panel); }
.blcg-feedback span { margin-right: auto; font-size: 13px; font-weight: 700; }
.blcg-feedback button { padding: 6px 12px; border: 1px solid var(--blcg-line); border-radius: 7px; color: var(--blcg-text); background: var(--blcg-bg); cursor: pointer; }
.blcg-footer { display: flex; gap: 22px; padding: 28px clamp(30px, 6vw, 90px); border-top: 1px solid var(--blcg-line); color: var(--blcg-muted); font-size: 11px; }
.blcg-footer span { margin-right: auto; }
.blcg-sidebar-backdrop { display: none; }
@media (max-width: 1120px) {
  .blcg-header > nav { display: none; }
  .blcg-doc-layout { grid-template-columns: minmax(0, 1fr); }
  .blcg-toc { display: none; }
}
@media (max-width: 860px) {
  .blcg-header { height: 62px; padding: 0 14px; }
  .admin-bar .blcg-header { top: 46px; }
  .blcg-brand { min-width: 0; }
  .blcg-brand strong { display: none; }
  .blcg-contact { display: none; }
  .blcg-mobile-toggle { display: inline-block; }
  .blcg-sidebar { z-index: 1100; top: 0 !important; bottom: 0; width: min(320px, 86vw); transform: translateX(-105%); transition: transform .24s ease; box-shadow: var(--blcg-shadow); }
  .blcg-sidebar.is-open { transform: translateX(0); }
  .blcg-sidebar-backdrop:not([hidden]) { display: block; position: fixed; z-index: 1050; inset: 0; background: rgba(0,0,0,.42); }
  .blcg-main, .admin-bar .blcg-main { margin-left: 0; padding-top: 62px; }
  .admin-bar .blcg-main { padding-top: 108px; }
  .blcg-archive-hero { padding: 64px 22px 52px; }
  .blcg-archive-hero::after { right: -70px; top: -30px; font-size: 280px; }
  .blcg-archive-content, .blcg-doc-layout { width: calc(100% - 36px); }
  .blcg-archive-content { padding: 48px 0 70px; }
  .blcg-card-grid { grid-template-columns: 1fr; }
  .blcg-doc-layout { padding: 36px 0 60px; }
  .blcg-copy-page { position: static; margin-top: 18px; }
  .blcg-link-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .blcg-brand em { font-size: 16px; }
  .blcg-archive-hero h1 { font-size: 40px; }
  .blcg-archive-hero > p:not(.blcg-eyebrow) { font-size: 15px; }
  .blcg-article-header h1 { font-size: 39px; }
  .blcg-article-header p, .blcg-article-content .blcg-lead { font-size: 16px; }
  .blcg-article-content h2 { font-size: 27px; }
  .blcg-article-content table { display: block; overflow-x: auto; white-space: nowrap; }
  .blcg-prev-next { grid-template-columns: 1fr; }
  .blcg-feedback { align-items: flex-start; flex-wrap: wrap; }
  .blcg-feedback span { flex: 0 0 100%; }
  .blcg-footer { flex-wrap: wrap; }
  .blcg-footer span { flex: 0 0 100%; }
}