/* ==========================================================================
   column-single.css — 칼럼 상세(개별 포스팅) 전용 (Track S / SPEC2 개편)
   SPEC2 §1: 콘텐츠 폭 820 · 본문 18/1.8 · h2 32/800 · 박스 5종 · 목차 박스 ·
   FAQ 호버 아코디언("이 글에서 자주 묻는 질문") · CTA 배너 제거.
   토큰·공통 컴포넌트는 column-base.css(.kdc-scope)를 그대로 사용.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 읽기 진행바
   -------------------------------------------------------------------------- */
.kdc-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  z-index: 999;
  pointer-events: none;
}

.kdc-progress-bar {
  display: block;
  height: 100%;
  width: 0;
  background: var(--kdc-primary, #ff4343);
  transition: width 0.1s linear;
}

/* --------------------------------------------------------------------------
   골격 — 본문 컬럼 820px 고정 중앙정렬 (SPEC2 §1.1)
   -------------------------------------------------------------------------- */
.kdc-single-con {
  --kdc-content-w: 820px; /* 920 → 820 오버라이드 (single 한정) */
}

.kdc-single-con .kdc-breadcrumb,
.kdc-single-header,
.kdc-single-thumb,
.kdc-single-layout,
.kdc-single-nav {
  max-width: var(--kdc-content-w, 820px);
  margin-left: auto;
  margin-right: auto;
}

.kdc-single-con .kdc-breadcrumb {
  margin-bottom: 36px;
}

.kdc-single-layout {
  position: relative;
}

/* --------------------------------------------------------------------------
   2. 글 헤더 (SPEC2 §1.2)
   -------------------------------------------------------------------------- */
.kdc-single-header {
  display: block; /* 전역 header 태그 flex 룰 무효화 */
  height: auto;   /* 전역 header 태그 고정높이(73px) 무효화 */
  position: static;
  background: transparent;
  text-align: center;
  padding: 16px 0 56px;
  border-bottom: 1px solid var(--kdc-border);
  margin-bottom: 56px;
}

.kdc-scope .kdc-single-cat {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--kdc-primary);
  background: rgba(var(--kdc-primary-rgb), 0.08);
  border-radius: 999px;
  margin-bottom: 24px;
  letter-spacing: -0.01em;
  transition: background 0.2s ease;
}

.kdc-scope .kdc-single-cat:hover {
  background: rgba(var(--kdc-primary-rgb), 0.15);
}

.kdc-scope .kdc-single-tit {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.035em;
  color: var(--kdc-text);
  margin: 0 0 32px;
  word-break: keep-all;
}

.kdc-single-meta {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin: 0;
  padding: 0;
}

.kdc-scope .kdc-single-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  color: var(--kdc-sub);
  letter-spacing: -0.01em;
}

.kdc-single-meta-item svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  opacity: 0.7;
}

/* --------------------------------------------------------------------------
   3. 대표 이미지
   -------------------------------------------------------------------------- */
.kdc-single-thumb {
  margin-bottom: 56px;
  border-radius: 16px;
  overflow: hidden;
  background: var(--kdc-bg);
  aspect-ratio: 16 / 9;
}

.kdc-single-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* --------------------------------------------------------------------------
   4. 본문 타이포 (SPEC2 §1.3 — 핵심)
   -------------------------------------------------------------------------- */
.kdc-single-body {
  min-width: 0;
  font-size: 18px;
  line-height: 1.8;
  color: var(--kdc-text-body);
  word-break: keep-all;
}

.kdc-scope .kdc-single-body {
  letter-spacing: -0.01em;
}

.kdc-single-body p {
  margin: 0 0 24px;
}

.kdc-single-body h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--kdc-text);
  margin: 80px 0 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--kdc-border);
}

.kdc-scope .kdc-single-body h2 {
  letter-spacing: -0.03em;
}

.kdc-single-body > h2:first-child {
  margin-top: 0;
}

.kdc-single-body h3 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--kdc-text);
  margin: 52px 0 16px;
  border: none;
}

.kdc-single-body h4 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--kdc-text);
  margin: 36px 0 12px;
}

.kdc-single-body a {
  color: var(--kdc-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.kdc-single-body a:hover {
  color: #d92e2e;
  text-decoration-thickness: 2px;
}

.kdc-single-body strong,
.kdc-single-body b {
  color: var(--kdc-text);
  font-weight: 700;
}

.kdc-scope .kdc-single-body ul,
.kdc-scope .kdc-single-body ol {
  padding-left: 26px;
  margin: 0 0 24px;
}

.kdc-single-body li {
  font-size: 18px;
  line-height: 1.8;
  margin-bottom: 12px;
}

.kdc-single-body li::marker {
  color: var(--kdc-sub);
}

.kdc-scope .kdc-single-body ul li {
  list-style: disc;
}

.kdc-scope .kdc-single-body ol li {
  list-style: decimal;
}

.kdc-single-body blockquote {
  margin: 36px 0;
  padding: 6px 0 6px 24px;
  border-left: 3px solid var(--kdc-primary);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--kdc-text);
}

.kdc-single-body blockquote p {
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
}

.kdc-single-body blockquote p:last-child {
  margin-bottom: 0;
}

.kdc-scope .kdc-single-body img {
  max-width: 100%;
  width: 100%;
  height: auto;
  border-radius: 12px;
  display: block;
  margin: 32px 0;
}

.kdc-single-body figure {
  margin: 32px 0;
}

.kdc-single-body figure img {
  margin: 0;
}

.kdc-single-body figcaption,
.kdc-single-body .wp-caption-text {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--kdc-sub);
  text-align: center;
}

.kdc-single-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  padding: 2px 8px;
  background: var(--kdc-bg);
  border-radius: 5px;
  color: var(--kdc-primary);
}

.kdc-single-body pre {
  margin: 32px 0;
  padding: 20px 24px;
  background: #1f2430;
  color: #e6e8ec;
  border-radius: 12px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  line-height: 1.6;
}

.kdc-single-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.kdc-single-body hr {
  margin: 56px 0;
  border: 0;
  border-top: 1px solid var(--kdc-border);
  height: 0;
}

/* 순수 <table> 자동 스타일 (SPEC2 §1.3 — 16px/1.7) */
.kdc-single-body table {
  width: 100%;
  margin: 32px 0;
  border-collapse: collapse;
  font-size: 16px;
  line-height: 1.7;
}

.kdc-single-body th,
.kdc-single-body td {
  padding: 14px 16px;
  border: 1px solid var(--kdc-border);
  text-align: left;
}

.kdc-single-body th {
  background: var(--kdc-card);
  font-weight: 700;
  color: var(--kdc-text);
}

/* JS가 table을 감싸는 가로 스크롤 래퍼 (모바일 넘침 방지) */
.kdc-table-scroll {
  overflow-x: auto;
  margin: 32px 0;
  -webkit-overflow-scrolling: touch;
}

.kdc-table-scroll table {
  margin: 0;
}

/* --------------------------------------------------------------------------
   5. 본문 박스 5종 (SPEC2 §1.4 — 원고 클래스 그대로, CSS만 승격)
   -------------------------------------------------------------------------- */
.kdc-single-body .intro-box,
.kdc-single-body .tip-box,
.kdc-single-body .warning-box,
.kdc-single-body .info-box,
.kdc-single-body .summary-box,
.kdc-single-body .related-box {
  margin: 36px 0;
  padding: 28px 30px;
  border-radius: 16px;
}

.kdc-single-body .intro-box p,
.kdc-single-body .intro-box li,
.kdc-single-body .tip-box p,
.kdc-single-body .tip-box li,
.kdc-single-body .warning-box p,
.kdc-single-body .warning-box li,
.kdc-single-body .info-box p,
.kdc-single-body .info-box li,
.kdc-single-body .summary-box p,
.kdc-single-body .summary-box li,
.kdc-single-body .related-box p,
.kdc-single-body .related-box li {
  font-size: 17px;
  line-height: 1.75;
}

.kdc-single-body .intro-box h3,
.kdc-single-body .intro-box h4,
.kdc-single-body .tip-box h3,
.kdc-single-body .tip-box h4,
.kdc-single-body .warning-box h3,
.kdc-single-body .warning-box h4,
.kdc-single-body .info-box h3,
.kdc-single-body .info-box h4,
.kdc-single-body .summary-box h3,
.kdc-single-body .summary-box h4,
.kdc-single-body .related-box h3,
.kdc-single-body .related-box h4 {
  font-size: 19px;
  font-weight: 800;
  line-height: 1.4;
  margin: 0 0 14px;
  padding: 0;
  border: none;
}

.kdc-single-body .intro-box > :last-child,
.kdc-single-body .tip-box > :last-child,
.kdc-single-body .warning-box > :last-child,
.kdc-single-body .info-box > :last-child,
.kdc-single-body .summary-box > :last-child,
.kdc-single-body .related-box > :last-child {
  margin-bottom: 0;
}

.kdc-single-body .intro-box ul,
.kdc-single-body .tip-box ul,
.kdc-single-body .warning-box ul,
.kdc-single-body .info-box ul,
.kdc-single-body .summary-box ul,
.kdc-single-body .related-box ul {
  margin-bottom: 0;
}

.kdc-single-body .intro-box li,
.kdc-single-body .tip-box li,
.kdc-single-body .warning-box li,
.kdc-single-body .info-box li,
.kdc-single-body .summary-box li,
.kdc-single-body .related-box li {
  margin-bottom: 8px;
}

.kdc-single-body .tip-box {
  background: rgba(18, 184, 134, 0.07);
  border-left: 3px solid #12b886;
}

.kdc-single-body .warning-box {
  background: rgba(240, 140, 0, 0.08);
  border-left: 3px solid #f08c00;
}

.kdc-single-body .info-box {
  background: var(--kdc-bg);
  border: 1px solid var(--kdc-border);
}

.kdc-single-body .summary-box {
  background: rgba(var(--kdc-primary-rgb), 0.05);
  border-radius: 16px;
}

.kdc-single-body .related-box {
  background: #f7f8fa;
}

.kdc-single-body .related-box ul {
  list-style: none;
  padding-left: 0;
}

.kdc-scope .kdc-single-body .related-box ul li {
  list-style: none;
}

.kdc-single-body .related-box a {
  font-weight: 600;
  color: var(--kdc-text-body);
  text-decoration-color: var(--kdc-border);
}

.kdc-single-body .related-box a:hover {
  color: var(--kdc-primary);
}

/* --------------------------------------------------------------------------
   5-1. "이런 분을 위한 콘텐츠예요" — .intro-box를 JS가 .kdc-audience로 승격
        (SPEC2 §1.5)
   -------------------------------------------------------------------------- */
.kdc-single-body .intro-box.kdc-audience {
  background: #f7f8fa;
  border: none;
  border-radius: 16px;
  padding: 28px 30px;
  margin: 0 0 36px;
}

.kdc-single-body .kdc-audience h3,
.kdc-single-body .kdc-audience h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 19px;
  font-weight: 800;
  color: var(--kdc-text);
}

.kdc-single-body .kdc-audience h3::before,
.kdc-single-body .kdc-audience h4::before {
  content: "🙋";
  font-size: 20px;
  line-height: 1;
}

.kdc-single-body .kdc-audience ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.kdc-scope .kdc-single-body .kdc-audience ul li {
  list-style: none;
}

.kdc-single-body .kdc-audience li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  font-size: 17px;
  line-height: 1.75;
}

.kdc-single-body .kdc-audience li:last-child {
  margin-bottom: 0;
}

/* CSS 체크 아이콘 (이모지 ✅ 대체) */
.kdc-single-body .kdc-audience li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.62em;
  width: 6px;
  height: 11px;
  border-right: 2.5px solid var(--kdc-primary);
  border-bottom: 2.5px solid var(--kdc-primary);
  transform: translateY(-50%) rotate(45deg);
}

/* --------------------------------------------------------------------------
   5-2. 목차 박스 — .tip-box(📋 목차)를 JS가 .kdc-toc-box로 승격 (SPEC2 §1.6)
   -------------------------------------------------------------------------- */
.kdc-single-body .tip-box.kdc-toc-box {
  background: #fff;
  border: 1px solid var(--kdc-border);
  border-left: 1px solid var(--kdc-border);
  border-radius: 16px;
  padding: 26px 28px;
  margin: 40px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.kdc-single-body .kdc-toc-box h3,
.kdc-single-body .kdc-toc-box h4 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 800;
  color: var(--kdc-text);
  margin: 0 0 16px;
}

.kdc-single-body .kdc-toc-box h3::before,
.kdc-single-body .kdc-toc-box h4::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 16px;
  background: var(--kdc-primary);
  border-radius: 2px;
}

.kdc-single-body .kdc-toc-box ul,
.kdc-single-body .kdc-toc-box ol {
  list-style: none;
  padding-left: 0;
  margin: 0;
  counter-reset: kdctoc;
}

.kdc-scope .kdc-single-body .kdc-toc-box ul li,
.kdc-scope .kdc-single-body .kdc-toc-box ol li {
  list-style: none;
}

.kdc-single-body .kdc-toc-box li {
  margin: 0;
  padding: 0;
  counter-increment: kdctoc;
}

.kdc-single-body .kdc-toc-box li + li {
  border-top: 1px solid #f2f3f5;
}

.kdc-single-body .kdc-toc-box li > a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 12px 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--kdc-text);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.kdc-single-body .kdc-toc-box li > a::before {
  content: counter(kdctoc, decimal-leading-zero);
  font-size: 14px;
  font-weight: 800;
  color: var(--kdc-primary);
  min-width: 22px;
  flex-shrink: 0;
}

.kdc-single-body .kdc-toc-box li > a:hover {
  color: var(--kdc-primary);
  padding-left: 4px;
  text-decoration: none;
}

/* 앵커 도착 하이라이트 (JS가 .kdc-anchor-hl 부여 후 제거) */
.kdc-single-body .kdc-anchor-hl {
  animation: kdc-anchor-fade 0.8s ease-out;
}

@keyframes kdc-anchor-fade {
  0% { background: rgba(var(--kdc-primary-rgb), 0.1); }
  100% { background: transparent; }
}

/* --------------------------------------------------------------------------
   6. 콜아웃 4종 (SPEC §5.3 유산 — 기존 원고 호환용 유지)
   -------------------------------------------------------------------------- */
.kdc-callout {
  display: flex;
  gap: 14px;
  margin: 32px 0;
  padding: 20px 24px;
  border-radius: 0 12px 12px 0;
  border-left: 3px solid transparent;
}

.kdc-callout-mark {
  flex: 0 0 auto;
  font-size: 20px;
  line-height: 1.5;
}

.kdc-callout-body {
  flex: 1 1 auto;
  min-width: 0;
}

.kdc-callout-body > :last-child {
  margin-bottom: 0;
}

.kdc-callout--term {
  background: rgba(var(--kdc-primary-rgb), 0.06);
  border-left-color: var(--kdc-primary);
}

.kdc-callout--tip {
  background: rgba(18, 184, 134, 0.07);
  border-left-color: #12b886;
}

.kdc-callout--warn {
  background: rgba(240, 140, 0, 0.08);
  border-left-color: #f08c00;
}

.kdc-callout--summary {
  background: rgba(var(--kdc-primary-rgb), 0.05);
  border-left: none;
  border-radius: 12px;
  padding: 24px 28px;
}

/* --------------------------------------------------------------------------
   7. 비교표 (SPEC §5.4 유산 — 기존 원고 호환용 유지)
   -------------------------------------------------------------------------- */
.kdc-compare-wrap {
  margin: 32px 0;
  border: 1px solid var(--kdc-border);
  border-radius: 12px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.kdc-compare-wrap table {
  width: 100%;
  margin: 0;
  border-collapse: collapse;
  font-size: 16px;
  line-height: 1.7;
}

.kdc-compare-wrap th {
  background: var(--kdc-card);
  font-weight: 700;
  padding: 14px 16px;
  text-align: left;
  border: none;
  border-bottom: 1px solid var(--kdc-border);
  color: var(--kdc-text);
}

.kdc-compare-wrap td {
  padding: 14px 16px;
  border: none;
  border-top: 1px solid var(--kdc-border-soft);
}

.kdc-compare-wrap tr:first-child td {
  border-top: none;
}

/* --------------------------------------------------------------------------
   8. TOC — PC 우측 fixed 스크롤스파이 (820 기준 좌표, SPEC2 §1.1)
   -------------------------------------------------------------------------- */
.kdc-single-toc {
  position: fixed;
  top: calc(var(--header-h, 100px) + 48px);
  left: calc(50% + 410px + 56px);
  width: 180px;
  max-height: calc(100vh - var(--header-h, 100px) - 96px);
  overflow-y: auto;
  padding: 4px 0 4px 16px;
  border-left: 1px solid var(--kdc-border);
  opacity: 0.55;
  transition: opacity 0.25s ease;
  z-index: 50;
  scrollbar-width: thin;
}

.kdc-single-toc:hover,
.kdc-single-toc:focus-within {
  opacity: 1;
}

.kdc-single-toc.is-footer-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.kdc-single-toc::-webkit-scrollbar {
  width: 4px;
}

.kdc-single-toc::-webkit-scrollbar-thumb {
  background: var(--kdc-border);
  border-radius: 2px;
}

.kdc-scope .kdc-single-toc-tit {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--kdc-sub);
  margin: 0 0 12px;
}

.kdc-single-toc-list .kdc-toc-item {
  margin: 4px 0;
}

.kdc-single-toc-list .kdc-toc-level-3 {
  padding-left: 10px;
}

.kdc-single-toc-list .kdc-toc-level-3 a {
  font-size: 11px;
}

.kdc-single-toc-list a {
  display: block;
  padding: 3px 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--kdc-sub);
  transition: color 0.2s ease;
  word-break: keep-all;
}

.kdc-single-toc-list a:hover {
  color: var(--kdc-text);
}

.kdc-single-toc-list a.is-active {
  color: var(--kdc-primary);
  font-weight: 700;
}

/* 본문 820 + 우측 TOC(56 간격 + 180폭)가 다 들어가지 않는 폭에서는 숨김
   (410 + 56 + 180 = 646 → 1292px 미만 숨김) */
@media (max-width: 1292px) {
  .kdc-single-toc {
    display: none;
  }
}

/* 모바일 인라인 목차 (≤1180 노출) */
.kdc-single-toc-mobile {
  display: none;
  margin: 0 0 36px;
  padding: 18px 22px;
  background: var(--kdc-bg);
  border-radius: 12px;
}

.kdc-single-toc-mobile summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  font-weight: 700;
  color: var(--kdc-text);
  cursor: pointer;
  list-style: none;
}

.kdc-single-toc-mobile summary::-webkit-details-marker {
  display: none;
}

.kdc-toc-mobile-arrow {
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
  margin-top: -3px;
}

.kdc-single-toc-mobile[open] .kdc-toc-mobile-arrow {
  transform: rotate(-135deg);
  margin-top: 3px;
}

.kdc-single-toc-mobile ol {
  margin: 14px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--kdc-border);
}

.kdc-single-toc-mobile li {
  margin: 4px 0;
}

.kdc-single-toc-mobile li.kdc-toc-level-3 {
  padding-left: 14px;
}

.kdc-single-toc-mobile a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--kdc-sub);
  line-height: 1.5;
  transition: color 0.2s ease;
}

.kdc-single-toc-mobile a:hover {
  color: var(--kdc-primary);
}

@media (max-width: 1180px) {
  .kdc-single-toc {
    display: none;
  }
  .kdc-single-toc-mobile:not([hidden]) {
    display: block;
  }
}

/* --------------------------------------------------------------------------
   9. 태그
   -------------------------------------------------------------------------- */
.kdc-single-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 64px;
  padding-top: 28px;
  border-top: 1px solid var(--kdc-border);
}

.kdc-scope .kdc-single-tags-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--kdc-sub);
  margin-right: 4px;
  letter-spacing: 0.02em;
}

.kdc-single-tag {
  display: inline-flex;
  align-items: center;
  height: 30px;
  padding: 0 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--kdc-text);
  background: #f3f4f6;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

.kdc-scope .kdc-single-tag:hover {
  background: var(--kdc-primary);
  color: var(--kdc-white);
}

/* --------------------------------------------------------------------------
   10. 관련글
   -------------------------------------------------------------------------- */
.kdc-single-related {
  margin-top: 56px;
  padding: 30px 34px;
  background: var(--kdc-card);
  border: 1px solid var(--kdc-border);
  border-radius: 16px;
}

.kdc-single-related-tit {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 19px;
  font-weight: 800;
  color: var(--kdc-text);
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--kdc-border);
}

.kdc-single-related-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.kdc-single-related-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 10px;
  margin: 0 -10px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--kdc-text-body);
  word-break: keep-all;
  transition: background 0.15s ease, color 0.15s ease;
}

.kdc-single-related-list a svg {
  flex-shrink: 0;
  width: 13px;
  height: 13px;
  color: var(--kdc-primary);
  transform: translateY(1px);
}

.kdc-single-related-list a:hover {
  background: var(--kdc-white);
  color: var(--kdc-primary);
}

/* --------------------------------------------------------------------------
   11. FAQ — "이 글에서 자주 묻는 질문" 호버 아코디언 (SPEC2 §1.7)
        본문 .kd-faq를 JS가 승격 (JSON-LD는 서버사이드 파싱 — 무영향)
   -------------------------------------------------------------------------- */
.kdc-single-body .kd-faq.kdc-faq-con {
  margin: 80px 0 0;
  padding: 0; /* style.css 구형 가이드 박스 중화 */
  border: none;
  border-radius: 0;
  background: transparent;
}

.kdc-faq-head {
  margin-bottom: 40px;
}

.kdc-scope .kdc-faq-tit {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.03em;
  color: var(--kdc-text);
  text-align: center;
  margin: 0;
  padding: 0;
  border: none;
}

.kdc-scope .kdc-faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--kdc-border);
}

.kdc-scope .kdc-single-body .kdc-faq-list li.kdc-faq-item {
  list-style: none;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--kdc-border);
  cursor: pointer;
  font-size: inherit;
  line-height: inherit;
}

.kdc-faq-item:focus-visible {
  outline: 2px solid var(--kdc-primary);
  outline-offset: 2px;
}

.kdc-faq-q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 24px 4px;
}

.kdc-faq-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--kdc-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  flex-shrink: 0;
  line-height: 1;
}

.kdc-faq-q-txt {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--kdc-text);
  transition: color 0.2s ease;
}

.kdc-faq-item:hover .kdc-faq-q-txt {
  color: var(--kdc-primary);
}

/* +/− 아이콘 — 열림 시 180deg 회전하며 −가 된다 */
.kdc-faq-icon {
  position: relative;
  flex-shrink: 0;
  margin-left: auto;
  width: 18px;
  height: 18px;
  transition: transform 0.25s ease;
}

.kdc-faq-icon::before,
.kdc-faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: currentColor;
  border-radius: 1px;
}

.kdc-faq-icon::before {
  width: 14px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.kdc-faq-icon::after {
  width: 2px;
  height: 14px;
  transform: translate(-50%, -50%);
  transition: transform 0.25s ease;
}

.kdc-faq-item.is-open .kdc-faq-icon {
  transform: rotate(180deg);
}

.kdc-faq-item.is-open .kdc-faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

/* 부드러운 열림 — grid-template-rows 0fr → 1fr (max-height 해킹 금지) */
.kdc-faq-a-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease;
}

.kdc-faq-item.is-open .kdc-faq-a-wrap {
  grid-template-rows: 1fr;
}

/* style.css 구형 가이드용 Q/A 마커 중화 (새 구조엔 원형 Q 배지가 있다) */
.kdc-faq-a-wrap > .kd-faq-a::before {
  content: none;
}

.kdc-faq-a-wrap > .kd-faq-a {
  overflow: hidden;
  min-height: 0;
  box-sizing: border-box;
  padding: 0 4px 0 42px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--kdc-sub);
  transition: padding 0.3s ease;
}

.kdc-faq-item.is-open .kdc-faq-a-wrap > .kd-faq-a {
  padding-bottom: 26px;
}

.kdc-faq-a-wrap > .kd-faq-a p {
  font-size: inherit;
  line-height: inherit;
  margin: 0 0 12px;
}

.kdc-faq-a-wrap > .kd-faq-a > :last-child {
  margin-bottom: 0;
}

/* JS 미동작 폴백 — 승격 전에도 Q/A 구분이 보이게 */
.kdc-single-body .kd-faq:not(.kdc-faq-con) h3 {
  margin: 0;
  padding: 26px 0 10px;
  border-top: 1px solid var(--kdc-border);
  font-size: 18px;
}

.kdc-single-body .kd-faq:not(.kdc-faq-con) .kd-faq-a {
  padding-bottom: 26px;
  font-size: 17px;
  color: var(--kdc-sub);
}

/* --------------------------------------------------------------------------
   12. 이전/다음 (CTA 배너 제거 후에도 64px 유지 — SPEC2 §1.8)
   -------------------------------------------------------------------------- */
.kdc-single-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 64px;
}

.kdc-single-nav-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 96px;
  padding: 24px 28px;
  background: var(--kdc-card);
  border-radius: 12px;
  color: var(--kdc-text);
  transition: background 0.25s ease;
}

.kdc-single-nav-item:hover {
  background: var(--kdc-card-hover);
}

.kdc-single-nav-next {
  text-align: right;
  grid-column: 2;
}

.kdc-single-nav-prev {
  grid-column: 1;
}

.kdc-scope .kdc-single-nav-label {
  font-size: 13px;
  color: var(--kdc-sub);
  letter-spacing: 0.02em;
}

.kdc-single-nav-tit {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--kdc-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s ease;
}

.kdc-single-nav-item:hover .kdc-single-nav-tit {
  color: var(--kdc-primary);
}

/* --------------------------------------------------------------------------
   13. 반응형 (SPEC2 §1.9)
   -------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  .kdc-single-con .kdc-breadcrumb,
  .kdc-single-header,
  .kdc-single-thumb,
  .kdc-single-layout,
  .kdc-single-nav {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .kdc-single-header {
    padding: 8px 0 36px;
    margin-bottom: 36px;
  }
  .kdc-scope .kdc-single-tit {
    font-size: 30px;
  }
  .kdc-single-meta {
    gap: 14px;
  }
  .kdc-scope .kdc-single-meta-item {
    font-size: 13px;
  }
  .kdc-single-thumb {
    margin-bottom: 36px;
    border-radius: 12px;
  }
  .kdc-single-body {
    font-size: 17px;
    line-height: 1.75;
  }
  .kdc-single-body h2 {
    font-size: 25px;
    margin: 56px 0 18px;
    padding-bottom: 12px;
  }
  .kdc-single-body h3 {
    font-size: 20px;
    margin: 40px 0 12px;
  }
  .kdc-single-body h4 {
    font-size: 18px;
  }
  .kdc-single-body li {
    font-size: 17px;
    line-height: 1.75;
  }
  .kdc-single-body blockquote {
    font-size: 18px;
    margin: 28px 0;
  }
  .kdc-single-body .intro-box,
  .kdc-single-body .tip-box,
  .kdc-single-body .warning-box,
  .kdc-single-body .info-box,
  .kdc-single-body .summary-box,
  .kdc-single-body .related-box {
    padding: 22px 20px;
  }
  .kdc-single-body .intro-box.kdc-audience {
    padding: 22px 20px;
  }
  .kdc-single-body .tip-box.kdc-toc-box {
    padding: 20px 20px;
  }
  .kdc-single-body .kdc-toc-box li > a {
    font-size: 16px;
  }
  .kdc-single-related {
    margin-top: 36px;
    padding: 22px 20px;
  }
  .kdc-single-related-list a {
    font-size: 15px;
  }
  .kdc-single-body .kd-faq.kdc-faq-con {
    margin-top: 64px;
  }
  .kdc-scope .kdc-faq-tit {
    font-size: 26px;
  }
  .kdc-faq-head {
    margin-bottom: 28px;
  }
  .kdc-faq-q {
    padding: 20px 2px;
    gap: 12px;
  }
  .kdc-faq-q-txt {
    font-size: 16px;
  }
  .kdc-faq-a-wrap > .kd-faq-a {
    padding-left: 40px;
    font-size: 16px;
  }
  .kdc-single-nav {
    grid-template-columns: 1fr;
  }
  .kdc-single-nav-item {
    padding: 20px 22px;
    min-height: 0;
  }
  .kdc-single-nav-next,
  .kdc-single-nav-prev {
    grid-column: auto;
    text-align: left;
  }
}

@media (max-width: 480px) {
  .kdc-scope .kdc-single-tit {
    font-size: 26px;
  }
  .kdc-single-body h2 {
    font-size: 22px;
  }
  .kdc-faq-badge {
    width: 24px;
    height: 24px;
    font-size: 12px;
  }
  .kdc-faq-a-wrap > .kd-faq-a {
    padding-left: 36px;
  }
  .kdc-callout {
    padding: 16px 18px;
  }
  .kdc-callout--summary {
    padding: 20px 20px;
  }
}

/* --------------------------------------------------------------------------
   14. prefers-reduced-motion — 애니메이션·트랜지션 비활성화
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .kdc-progress-bar,
  .kdc-faq-icon,
  .kdc-faq-icon::after,
  .kdc-faq-a-wrap,
  .kdc-faq-a-wrap > .kd-faq-a,
  .kdc-faq-q-txt,
  .kdc-toc-mobile-arrow,
  .kdc-single-nav-item,
  .kdc-single-nav-tit,
  .kdc-single-toc,
  .kdc-single-body .kdc-toc-box li > a {
    transition: none;
  }
  .kdc-single-body .kdc-anchor-hl {
    animation: none;
  }
}