/* XPLAIN AI — 다크 에디토리얼 리서치 미디어 (Phase 2C.2 실스크린샷 기반 리디자인)
   4pillars.io 시각적 방향(대형타이포·에디토리얼 행·여백) 참고, 자체 재해석. 복제 아님.
   ★Phase 2C.2: 서버 내부 헤드리스 브라우저 실제 스크린샷 기반 2회 개선. */

/* ── 로컬 호스팅 가변 폰트(외부 CDN 런타임 호출 없음, 셀프호스팅) ── */
@font-face {
  font-family: 'Pretendard Variable';
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
  src: url('../fonts/PretendardVariable.woff2') format('woff2-variations');
}
@font-face {
  font-family: 'Inter Variable';
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
  src: url('../fonts/InterVariable.woff2') format('woff2-variations');
}

:root {
  --bg: #0A0C10;
  --surface: #12161D;
  --surface-elev: #181E27;
  --text: #F4F5F7;
  --text-2: #9CA5B3;
  --text-3: #6B7280;
  --border: rgba(255,255,255,0.10);
  --border-strong: rgba(255,255,255,0.16);
  --accent: #3DDC97;
  --accent-blue: #4C8DFF;
  --amber: #D9A441;
  --radius: 4px;
  --maxw: 1440px;
  --reading-w: 720px;
  --gutter: 64px;
}

* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; }
/* 모바일 메뉴 열림 중 배경 스크롤 잠금(§7.2) */
body.xpl-scroll-lock { overflow: hidden; }
body {
  background: var(--bg); color: var(--text);
  font-family: 'Pretendard Variable', 'Inter Variable', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Apple SD Gothic Neo', 'Malgun Gothic', Roboto, sans-serif;
  font-size: 18px; line-height: 1.7; margin: 0;
  -webkit-font-smoothing: antialiased; word-break: keep-all; overflow-wrap: break-word;
}
/* 영문 화면은 Inter 우선(라틴 그로테스크), 한글 폴백 Pretendard */
html[lang="en-US"] body {
  font-family: 'Inter Variable', 'Pretendard Variable', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.xpl-wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
@media (max-width: 1023px) { .xpl-wrap { padding: 0 32px; } }
@media (max-width: 599px) { .xpl-wrap { padding: 0 20px; } }

/* ── Header ── */
.xpl-header {
  position: sticky; top: 0; z-index: 40; background: rgba(10,12,16,0.88);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); height: 80px; display: flex; align-items: center;
}
.xpl-header__row { display: flex; align-items: center; justify-content: space-between; padding: 0 var(--gutter); max-width: var(--maxw); margin: 0 auto; width: 100%; }
@media (max-width: 1023px) { .xpl-header__row { padding: 0 32px; } }
@media (max-width: 599px) { .xpl-header__row { padding: 0 20px; } .xpl-header { height: 64px; } }
.xpl-logo { display: inline-flex; align-items: center; gap: 9px; font-size: 1.25rem; font-weight: 800; letter-spacing: -0.02em; color: var(--text); }
.xpl-logo span { color: var(--accent); }
.xpl-logo__mark { flex: none; color: var(--text); }
.xpl-nav { display: none; gap: 36px; }
.xpl-nav a { color: var(--text-2); font-size: 15px; font-weight: 500; letter-spacing: -0.01em; transition: color .15s ease; }
.xpl-nav a:hover { color: var(--text); }
.xpl-header__right { display: flex; align-items: center; gap: 18px; }
.xpl-lang-switch { display: flex; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; font-size: 13px; }
.xpl-lang-switch a { padding: 6px 13px; color: var(--text-3); transition: color .15s ease, background .15s ease; }
.xpl-lang-switch a.active { background: var(--surface-elev); color: var(--text); }
.xpl-lang-switch a:hover { color: var(--text); }
.xpl-menu-btn { display: inline-flex; background: none; border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); padding: 8px 11px; cursor: pointer; }
@media (min-width: 1024px) { .xpl-nav { display: flex; } .xpl-menu-btn { display: none; } }
/* 모바일 nav: 헤더(.xpl-header 는 flex)의 형제로 두면 우측 좁은 컬럼으로 겹침 →
   헤더 하단 전폭 패널로 절대배치(불투명 배경, sticky 헤더 기준 top:100%). */
.xpl-mobile-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; width: 100%;
  flex-direction: column; gap: 2px; padding: 12px 20px 20px; background: var(--bg);
  border-bottom: 1px solid var(--border); box-shadow: 0 12px 24px rgba(0,0,0,0.4); }
.xpl-mobile-nav.open { display: flex; }
.xpl-mobile-nav a { padding: 12px 4px; color: var(--text-2); border-bottom: 1px solid var(--border); font-size: 15px; }

/* ── Hero — 비대칭 에디토리얼: 텍스트 우선, 대형 타이포. 이미지 없으면 텍스트 전폭 ── */
.xpl-hero { padding: 80px 0 64px; border-bottom: 1px solid var(--border); }
.xpl-hero__grid { display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center; }
@media (min-width: 1024px) { .xpl-hero__grid.has-media { grid-template-columns: 1.05fr 0.95fr; gap: 72px; } }
/* 이미지 없는 hero: 텍스트만, reading 폭보다 넓게 대형 타이포 강조 */
.xpl-hero__text { max-width: 900px; }
.xpl-hero__grid.has-media .xpl-hero__text { max-width: none; }
.xpl-hero__cat { color: var(--accent); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; }
.xpl-hero__title { font-size: 48px; line-height: 1.08; font-weight: 800; margin: 16px 0 20px; letter-spacing: -0.03em; overflow-wrap: break-word; text-wrap: balance; }
/* 한국어/영어 제목 폭 별도 최적화(§3.2) — 이미지 없는 typographic hero 에서만 적용 */
html[lang="en-US"] .xpl-hero__grid:not(.has-media) .xpl-hero__text { max-width: 820px; }
.xpl-hero__desc { color: var(--text-2); font-size: 19px; line-height: 1.6; max-width: 560px; margin: 0 0 24px; }
.xpl-hero__meta { color: var(--text-3); font-size: 14px; margin-bottom: 26px; display: flex; gap: 16px; }
.xpl-hero__media { aspect-ratio: 4/3; background: linear-gradient(135deg, var(--surface), var(--surface-elev)); border-radius: var(--radius); overflow: hidden; display: flex; align-items: center; justify-content: center; border: 1px solid var(--border); }
.xpl-hero__media img { width: 100%; height: 100%; object-fit: cover; }
.xpl-hero__media.fallback { color: var(--text-3); font-size: 14px; letter-spacing: 0.04em; text-transform: uppercase; }
.xpl-cta { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: var(--text); font-weight: 600; padding: 0; font-size: 15px; border-bottom: 1px solid var(--accent); padding-bottom: 4px; }
.xpl-cta:hover { color: var(--accent); }
@media (min-width: 768px) { .xpl-hero__title { font-size: 72px; } }
@media (min-width: 1280px) { .xpl-hero__title { font-size: 88px; } }
@media (max-width: 599px) { .xpl-hero { padding: 40px 0 36px; } .xpl-hero__title { font-size: 42px; } .xpl-hero__desc { font-size: 17px; } }

/* ── Section 간격 계층(§8) — 모든 섹션이 동일한 대형 padding 을 쓰지 않도록 중요도별 차등 ──
   ★padding-top/bottom 만 지정(좌우는 절대 건드리지 않음) — archive-lang.php 등 여러 템플릿이
   .xpl-wrap 과 .xpl-section 을 같은 엘리먼트에 함께 씀. 과거 shorthand `padding:64px 0` 는
   좌우를 암묵적으로 0 으로 재정의해 .xpl-wrap 의 `padding:0 var(--gutter)` 를 지워버렸고,
   그 결과 목록/기사/검색/페이지 등 본문이 GNB(.xpl-header__row)보다 폭이 넓게 렌더되는 버그가
   있었음(실측: 홈은 .xpl-section 을 별도 <section>에, .xpl-wrap 을 안쪽 <div>에 분리해서 써서
   원래부터 무관했음). */
.xpl-section { padding-top: 64px; padding-bottom: 64px; border-bottom: 1px solid var(--border); }
@media (min-width: 1024px) { .xpl-section { padding-top: 80px; padding-bottom: 80px; } }
.xpl-section--tight { padding-top: 48px; padding-bottom: 48px; }
@media (min-width: 1024px) { .xpl-section--tight { padding-top: 56px; padding-bottom: 56px; } }
.xpl-section__head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 36px; }
.xpl-section__title { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; }
@media (min-width: 1024px) { .xpl-section__title { font-size: 34px; } }
.xpl-section__link { font-size: 14px; color: var(--text-2); border-bottom: 1px solid var(--border-strong); padding-bottom: 2px; }
.xpl-section__link:hover { color: var(--accent); border-color: var(--accent); }

/* ── Editor's Picks — 첫 기사 크게 + 나머지 리스트(동일크기 4개 반복 금지) ── */
.xpl-picks { display: grid; grid-template-columns: 1fr; gap: 40px; }
@media (min-width: 1024px) { .xpl-picks { grid-template-columns: 1.3fr 1fr; gap: 56px; } }
.xpl-picks__main-media { aspect-ratio: 16/9; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); margin-bottom: 20px; }
.xpl-picks__main-media img { width: 100%; height: 100%; object-fit: cover; }
.xpl-picks__main-title { font-size: 28px; line-height: 1.18; font-weight: 800; letter-spacing: -0.015em; margin: 10px 0 12px; }
.xpl-picks__main-title a { color: var(--text); }
.xpl-picks__main-desc { font-size: 16px; }
.xpl-picks__list { display: flex; flex-direction: column; margin-top: 8px; }
/* ★.xpl-row--compact 는 실제로 .xpl-row__body + .xpl-row__meta 2개 자식만 가지는데(번호
   열 없음), 아래 .xpl-row 기본 규칙(56px 1fr auto, 3열)이 소스 순서상 더 뒤에 나와 동일
   특이도(단일 클래스)에서 grid-template-columns 를 덮어써버려 body 가 56px 열에 짓눌려
   글자가 세로로 찌부러지는 버그가 있었음(실촬영으로 발견, 2026-07-19). 소스 순서에
   의존하지 않도록 .xpl-row.xpl-row--compact 복합 셀렉터(특이도 상승)로 확실히 승리시킴. */
.xpl-row.xpl-row--compact { padding: 18px 0 !important; grid-template-columns: 1fr auto; }
.xpl-row__title--sm { font-size: 17px !important; }

/* ── 콘텐츠 유형 배지(카테고리 accent 와 구분되는 중립 톤) ── */
.xpl-type-badge { display: inline-block; color: var(--text-3); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; border: 1px solid var(--border-strong); border-radius: 999px; padding: 2px 9px; }
.xpl-queued-badge { display: inline-block; color: #C99A3A; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; border: 1px solid #C99A3A; border-radius: 999px; padding: 2px 9px; }
.xpl-rejected-badge { display: inline-block; color: #C15C5C; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; border: 1px solid #C15C5C; border-radius: 999px; padding: 2px 9px; }
.xpl-drop-reason { display: block; margin-top: 4px; color: var(--text-3); font-size: 12.5px; }
.xpl-hero__kicker { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

/* ── Latest — 에디토리얼 행 구조(번호/날짜 좌측·제목중앙·카테고리 우측, 얇은 선) ── */
.xpl-rows { display: flex; flex-direction: column; }
.xpl-row { display: grid; grid-template-columns: 56px 1fr auto; gap: 24px; align-items: start; padding: 28px 0; border-bottom: 1px solid var(--border); transition: opacity .15s ease; }
.xpl-row.has-media { grid-template-columns: 56px 96px 1fr auto; }
.xpl-row:first-child { padding-top: 0; }
.xpl-row:hover { opacity: 0.82; }
.xpl-row:hover .xpl-row__title { color: var(--accent); }
.xpl-row__num { color: var(--text-3); font-size: 14px; font-variant-numeric: tabular-nums; padding-top: 4px; white-space: nowrap; }
.xpl-row__media { aspect-ratio: 4/3; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.xpl-row__media img { width: 100%; height: 100%; object-fit: cover; }
.xpl-row__body { min-width: 0; }
.xpl-row__tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 6px; }
.xpl-row__cat { color: var(--accent); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.xpl-row__title { font-size: 22px; font-weight: 700; line-height: 1.35; margin: 6px 0 8px; transition: color .15s ease; }
.xpl-row__tags + .xpl-row__title { margin-top: 0; }
@media (min-width: 1024px) { .xpl-row__title { font-size: 26px; } }
.xpl-row__desc { color: var(--text-2); font-size: 15px; line-height: 1.6; max-width: 620px; margin: 0; }
.xpl-row__meta { color: var(--text-3); font-size: 13px; text-align: right; padding-top: 6px; white-space: nowrap; }
.xpl-row__body .xpl-brief__badge { display: inline-block; margin-bottom: 8px; }
@media (max-width: 599px) {
  .xpl-row { grid-template-columns: 1fr; gap: 8px; }
  .xpl-row.has-media { grid-template-columns: 72px 1fr; grid-template-areas: "media body" "media meta"; }
  .xpl-row.has-media .xpl-row__media { grid-area: media; aspect-ratio: 1/1; }
  .xpl-row.has-media .xpl-row__body { grid-area: body; }
  .xpl-row.has-media .xpl-row__meta { grid-area: meta; }
  .xpl-row__num { display: none; }
  .xpl-row__meta { text-align: left; }
  .xpl-row__title { font-size: 21px; }
}

/* ── Cards(일반, Research 등) ── */
.xpl-grid { display: grid; grid-template-columns: 1fr; gap: 36px; }
@media (min-width: 768px) { .xpl-grid.cols-3 { grid-template-columns: repeat(3, 1fr); } .xpl-grid.cols-2 { grid-template-columns: repeat(2, 1fr); } }
.xpl-card__media { aspect-ratio: 16/10; background: var(--surface); border-radius: var(--radius); overflow: hidden; margin-bottom: 18px; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; }
.xpl-card__media img { width: 100%; height: 100%; object-fit: cover; }
.xpl-card__media.fallback { color: var(--text-3); font-size: 13px; text-align: center; padding: 12px; letter-spacing: 0.03em; }
.xpl-card__cat { color: var(--accent); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.xpl-card__title { font-size: 22px; font-weight: 700; line-height: 1.3; margin: 10px 0 8px; letter-spacing: -0.01em; }
.xpl-card__title a { color: var(--text); }
.xpl-card__desc { color: var(--text-2); font-size: 15px; line-height: 1.6; margin: 0 0 10px; }
.xpl-card__meta { color: var(--text-3); font-size: 13px; }

/* ── Brief list(Tier B) — 정식기사와 명확히 구분 ── */
.xpl-brief { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--border); }
.xpl-brief__item { padding: 20px 0; border-bottom: 1px solid var(--border); display: flex; gap: 16px; align-items: baseline; flex-wrap: wrap; }
.xpl-brief__time { color: var(--text-3); font-size: 13px; font-variant-numeric: tabular-nums; min-width: 44px; }
.xpl-brief__badge { display: inline-block; background: rgba(217,164,65,0.14); color: var(--amber); font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 999px; text-transform: uppercase; letter-spacing: 0.05em; }
.xpl-brief__title { font-size: 16px; font-weight: 600; color: var(--text); margin: 0; flex: 1; min-width: 200px; }
.xpl-brief__meta { color: var(--text-3); font-size: 13px; }
@media (max-width: 599px) {
  /* 배지+메타를 한 줄로, 제목은 전폭 다음 줄 — 제목 폭이 좁아지지 않도록(§3.5) */
  .xpl-brief__badge { order: 1; }
  .xpl-brief__meta { order: 2; margin-left: auto; }
  .xpl-brief__title { order: 3; flex-basis: 100%; min-width: 0; }
}

/* ── Topic hubs — 태그 나열 아님, 확장형 카드(설명·기사수·최신기사) ── */
.xpl-hub-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .xpl-hub-grid { grid-template-columns: repeat(2, 1fr); } }
.xpl-hub { padding: 28px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); transition: border-color .15s ease; }
.xpl-hub:hover { border-color: var(--border-strong); }
.xpl-hub__name { font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.xpl-hub__desc { color: var(--text-2); font-size: 14px; line-height: 1.6; margin-bottom: 16px; }
.xpl-hub__stats { display: flex; gap: 16px; color: var(--text-3); font-size: 13px; margin-bottom: 14px; }
.xpl-hub__latest { font-size: 14px; color: var(--text-2); border-top: 1px solid var(--border); padding-top: 14px; }
.xpl-hub__latest a { color: var(--accent-blue); }

/* ── Article detail — 중앙 정렬 리딩 컬럼(전폭 방지, spec 680~780px) ── */
/* ── 기사 shell — TOC 있을 때만 2컬럼(짧은 글엔 빈 sidebar 강제 노출 안 함, §5.4) ── */
.xpl-article-shell { max-width: 760px; margin: 0 auto; }
@media (min-width: 1100px) {
  .xpl-article-shell.has-toc { display: grid; grid-template-columns: 760px 240px; gap: 56px; max-width: 1056px; align-items: start; }
  .xpl-article-shell.has-toc .xpl-article { max-width: none; }
}
.xpl-toc { display: none; }
@media (min-width: 1100px) {
  .xpl-toc { display: block; position: sticky; top: 100px; padding: 20px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
  .xpl-toc__title { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-3); margin-bottom: 12px; }
  .xpl-toc nav ol { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; counter-reset: toc; }
  .xpl-toc nav li { counter-increment: toc; font-size: 13px; line-height: 1.5; }
  .xpl-toc nav li::before { content: counter(toc) '. '; color: var(--text-3); }
  .xpl-toc nav a { color: var(--text-2); }
  .xpl-toc nav a:hover { color: var(--accent); }
}

/* ── 핵심 요약(Key Takeaways) — 실데이터 있을 때만(§5.3) ── */
.xpl-takeaways { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); padding: 24px 26px; margin: 28px 0; }
.xpl-takeaways__title { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); margin-bottom: 14px; }
.xpl-takeaways ol { list-style: none; margin: 0; padding: 0; counter-reset: tk; display: flex; flex-direction: column; gap: 14px; }
.xpl-takeaways li { counter-increment: tk; padding-left: 30px; position: relative; }
.xpl-takeaways li::before { content: counter(tk); position: absolute; left: 0; top: 0.1em; width: 20px; height: 20px; border-radius: 50%; background: var(--surface-elev); color: var(--text-2); font-size: 11px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.xpl-takeaways li strong { display: block; font-size: 16px; color: var(--text); margin-bottom: 3px; }
.xpl-takeaways li span { display: block; font-size: 14px; line-height: 1.6; color: var(--text-2); }

.xpl-article { max-width: 760px; margin: 0 auto; }
.xpl-article__kicker { color: var(--accent); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; }
.xpl-article__hero-media { width: 100%; margin: 32px 0 8px; aspect-ratio: 16/9; overflow: hidden; border-radius: var(--radius); border: 1px solid var(--border); }
.xpl-article__hero-media img { width: 100%; height: 100%; object-fit: cover; }
.xpl-breadcrumb { color: var(--text-3); font-size: 13px; margin-bottom: 24px; }
.xpl-breadcrumb a { color: var(--text-3); }
.xpl-breadcrumb a:hover { color: var(--text-2); }
.xpl-article__header { padding-top: 56px; }
.xpl-article__title { font-size: 34px; line-height: 1.15; font-weight: 800; margin: 12px 0 18px; letter-spacing: -0.03em; }
@media (min-width: 768px) { .xpl-article__title { font-size: 52px; } }
.xpl-article__deck { font-size: 19px; color: var(--text-2); line-height: 1.6; max-width: var(--reading-w); margin: 0 0 24px; }
.xpl-article__meta { color: var(--text-3); font-size: 14px; margin-bottom: 32px; display: flex; gap: 18px; flex-wrap: wrap; }
.xpl-article__body { font-size: 18px; line-height: 1.85; max-width: none; }
.xpl-article__body h2 { font-size: 24px; font-weight: 700; margin: 3rem 0 1.1rem; padding-top: 1.2rem; border-top: 1px solid var(--border); letter-spacing: -0.01em; }
.xpl-article__body h3 { font-size: 19px; font-weight: 700; margin: 1.8rem 0 0.7rem; }
.xpl-article__body p { margin: 1.2rem 0; color: var(--text); }
.xpl-article__body ul:not(.xpl-sources), .xpl-article__body ol { margin: 1.3rem 0; padding-left: 1.5em; }
.xpl-article__body li { margin: 0.55rem 0; line-height: 1.75; }
.xpl-article__body li::marker { color: var(--text-3); }
.xpl-article__body ul.xpl-sources { list-style: none; padding: 0; margin: 0.8rem 0; }
.xpl-article__body ul.xpl-sources li { padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 15px; color: var(--text-2); }
.xpl-article__body img { border-radius: var(--radius); margin: 1.6rem 0; }
.xpl-article__body .xpl-disclosure { border-top: 1px solid var(--border); padding-top: 18px; margin-top: 2.4rem; }

/* ── Ad slot(placeholder만, 실코드 없음) ── */
.xpl-ad-slot { border: 1px dashed var(--border-strong); color: var(--text-3); font-size: 12px; text-align: center; padding: 16px; border-radius: var(--radius); margin: 24px 0; background: rgba(255,255,255,0.015); letter-spacing: 0.02em; }

/* ── Archive ── */
.xpl-archive__title { font-size: 34px; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 12px; }
@media (min-width: 1024px) { .xpl-archive__title { font-size: 44px; } }
.xpl-filters { display: flex; gap: 10px; flex-wrap: wrap; margin: 32px 0 14px; }
.xpl-filters select, .xpl-filters input { background: var(--surface); border: 1px solid var(--border); color: var(--text); border-radius: var(--radius); padding: 9px 12px; font-size: 14px; }
.xpl-filters select:focus, .xpl-filters input:focus { outline: 2px solid var(--accent-blue); outline-offset: 1px; }
.xpl-filters__search { flex: 1 1 220px; min-width: 0; }
.xpl-filters__submit { background: var(--surface-elev); border: 1px solid var(--border-strong); color: var(--text); border-radius: var(--radius); padding: 9px 18px; font-size: 14px; cursor: pointer; }
.xpl-filters__submit:hover { border-color: var(--accent); }
.xpl-filters__count { color: var(--text-3); font-size: 13px; margin-bottom: 24px; }
.xpl-filters__clear { color: var(--accent-blue); margin-left: 6px; }
@media (max-width: 599px) { .xpl-filters { margin: 24px 0 12px; } }

.xpl-pagination { margin-top: 32px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 24px; border-top: 1px solid var(--border); flex-wrap: wrap; }
.xpl-pagination a { color: var(--text); font-size: 14px; font-weight: 600; }
.xpl-pagination a:hover { color: var(--accent); }
.xpl-pagination__status { color: var(--text-3); font-size: 13px; }

/* ── Footer ── */
.xpl-footer { border-top: 1px solid var(--border); padding: 72px 0 40px; margin-top: 20px; }
.xpl-footer__grid { display: grid; grid-template-columns: 1fr; gap: 32px; }
@media (min-width: 768px) { .xpl-footer__grid { grid-template-columns: 2fr 1fr 1fr; gap: 48px; } }
.xpl-footer a { color: var(--text-2); font-size: 14px; display: block; margin-bottom: 10px; }
.xpl-footer a:hover { color: var(--text); }
.xpl-footer__title { color: var(--text); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 16px; }
.xpl-footer__copy { color: var(--text-3); font-size: 13px; margin-top: 40px; border-top: 1px solid var(--border); padding-top: 24px; }
/* 정책/사이트 그룹 — 기본 펼침(open, 무JS 상태에서도 링크 접근 가능), 모바일에서만 접기 가능(§7.4) */
.xpl-footer__group summary { list-style: none; }
.xpl-footer__group summary::-webkit-details-marker { display: none; }
.xpl-footer__links { margin-top: 4px; }
@media (max-width: 767px) {
  .xpl-footer { padding: 48px 0 32px; }
  .xpl-footer__grid { gap: 8px; }
  .xpl-footer__group { border-top: 1px solid var(--border); padding: 14px 0; }
  .xpl-footer__group summary { cursor: pointer; display: flex; align-items: center; justify-content: space-between; margin-bottom: 0; }
  .xpl-footer__group summary::after { content: '+'; color: var(--text-3); font-size: 16px; }
  .xpl-footer__group[open] summary::after { content: '\2212'; }
  .xpl-footer__group[open] summary { margin-bottom: 12px; }
  .xpl-footer__copy { margin-top: 24px; padding-top: 18px; }
}

/* ── Accessibility ── */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent-blue); outline-offset: 2px;
}
.xpl-skip-link { position: absolute; left: -999px; top: auto; }
.xpl-skip-link:focus { position: fixed; left: 12px; top: 12px; background: var(--accent); color: #06110C; padding: 10px 16px; border-radius: var(--radius); z-index: 100; }

/* ── Empty state ── */
.xpl-empty { color: var(--text-2); font-size: 15px; padding: 40px 0; }

/* ── 영어 타이포(letter-spacing/line-height 별도 조정) ── */
html[lang="en-US"] .xpl-hero__title, html[lang="en-US"] .xpl-article__title { letter-spacing: -0.025em; }
html[lang="en-US"] body { word-break: normal; }

/* ══════════════════════════════════════════════════════════════════
   About 페이지 전용 컴포넌트(Phase 2C.4, 2026-07-18) — .xpl-about 로 스코프.
   기존 .xpl-hero/.xpl-hub-grid/.xpl-hub 는 그대로 재사용, 여기는 그 외
   spec 요구 컴포넌트(가이드라인·타임라인·패널·3열 모듈·원칙 카드·강한 CTA)만 추가.
   ══════════════════════════════════════════════════════════════════ */
.xpl-about__num {
  display: flex; align-items: center; gap: 14px; margin-bottom: 18px;
  color: var(--accent); font-size: 13px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
}
.xpl-about__num::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.xpl-about__heading { font-size: 32px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.2; margin: 0 0 20px; max-width: 720px; }
@media (min-width: 1024px) { .xpl-about__heading { font-size: 42px; } }
.xpl-about__lead { font-size: 20px; line-height: 1.7; color: var(--text-2); max-width: 680px; margin: 0 0 8px; }
@media (min-width: 1024px) { .xpl-about__lead { font-size: 22px; } }
.xpl-about__body { font-size: 17px; line-height: 1.75; color: var(--text-2); max-width: 680px; }
@media (min-width: 1024px) { .xpl-about__body { font-size: 18px; } }
.xpl-about__body + .xpl-about__body { margin-top: 1.2em; }
.xpl-about-section { padding: 64px 0; border-top: 1px solid var(--border); }
@media (min-width: 1024px) { .xpl-about-section { padding: 96px 0; } }
.xpl-about-section:first-of-type { border-top: none; }

/* 12-col 비대칭 그리드(리드 텍스트 + 보조 컬럼) */
.xpl-about__split { display: grid; grid-template-columns: 1fr; gap: 32px; }
@media (min-width: 1024px) { .xpl-about__split { grid-template-columns: 7fr 5fr; gap: 64px; align-items: start; } }

/* 편집 프로세스 5단계 타임라인 */
.xpl-timeline { position: relative; display: flex; flex-direction: column; gap: 0; max-width: 640px; }
.xpl-timeline__item { position: relative; padding: 0 0 36px 52px; }
.xpl-timeline__item:last-child { padding-bottom: 0; }
.xpl-timeline__item::before {
  content: ''; position: absolute; left: 15px; top: 32px; bottom: 0; width: 1px; background: var(--border);
}
.xpl-timeline__item:last-child::before { display: none; }
.xpl-timeline__num {
  position: absolute; left: 0; top: 0; width: 32px; height: 32px; border-radius: 50%;
  background: var(--surface-elev); border: 1px solid var(--border-strong); color: var(--text);
  display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums;
}
.xpl-timeline__head { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.xpl-timeline__body { font-size: 15.5px; line-height: 1.7; color: var(--text-2); }

/* AI 활용 고지 — 구분된 surface panel */
.xpl-panel { background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: var(--radius); padding: 28px 30px; max-width: 680px; }
.xpl-panel ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.xpl-panel li { padding-left: 24px; position: relative; font-size: 15.5px; line-height: 1.65; color: var(--text-2); }
.xpl-panel li::before { content: '—'; position: absolute; left: 0; color: var(--accent); }
.xpl-panel__link { display: inline-block; margin-top: 20px; font-size: 14px; color: var(--accent-blue); border-bottom: 1px solid transparent; }
.xpl-panel__link:hover { border-color: var(--accent-blue); }

/* 콘텐츠 유형 3-column 모듈 */
.xpl-formats { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .xpl-formats { grid-template-columns: repeat(3, 1fr); } }
.xpl-formats__item { padding: 26px 24px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.xpl-formats__tag { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); border: 1px solid var(--border-strong); border-radius: 999px; padding: 2px 10px; margin-bottom: 14px; }
.xpl-formats__name { font-size: 19px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.xpl-formats__desc { font-size: 14.5px; line-height: 1.65; color: var(--text-2); margin-bottom: 0; }
.xpl-formats__item a.xpl-formats__link { display: inline-block; margin-top: 14px; font-size: 13.5px; color: var(--accent-blue); }

/* 편집 원칙 — 대형 넘버 타이포그래픽 카드 */
.xpl-principles-grid { display: grid; grid-template-columns: 1fr; gap: 40px 48px; }
@media (min-width: 768px) { .xpl-principles-grid { grid-template-columns: repeat(2, 1fr); } }
.xpl-principle__num { font-size: 44px; font-weight: 800; color: var(--text); opacity: 0.16; line-height: 1; margin-bottom: 4px; font-variant-numeric: tabular-nums; }
.xpl-principle__head { font-size: 19px; font-weight: 700; color: var(--text); margin: 0 0 8px; }
.xpl-principle__body { font-size: 15px; line-height: 1.7; color: var(--text-2); }

/* 운영·정정 링크 리스트 */
.xpl-about-links { display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: 22px; }
.xpl-about-links a { font-size: 14.5px; color: var(--accent-blue); border-bottom: 1px solid transparent; }
.xpl-about-links a:hover { border-color: var(--accent-blue); }

/* 마지막 CTA — 강한 대비 밴드 */
.xpl-about-finalcta { background: var(--surface-elev); border-radius: var(--radius); padding: 48px 36px; text-align: center; }
@media (min-width: 1024px) { .xpl-about-finalcta { padding: 72px 48px; } }
.xpl-about-finalcta__title { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; margin: 0 0 28px; }
@media (min-width: 1024px) { .xpl-about-finalcta__title { font-size: 32px; } }
.xpl-about-finalcta__links { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.xpl-about-finalcta__links a {
  padding: 12px 22px; border: 1px solid var(--border-strong); border-radius: 999px; color: var(--text);
  font-size: 14.5px; font-weight: 600; transition: border-color .15s ease, color .15s ease;
}
.xpl-about-finalcta__links a:hover { border-color: var(--accent); color: var(--accent); }

@media (max-width: 599px) {
  .xpl-about__heading { font-size: 27px; }
  .xpl-about__lead { font-size: 18px; }
  .xpl-about-section { padding: 48px 0; }
  .xpl-about-finalcta__title { font-size: 22px; }
}