@charset "utf-8";
/* 포토북 큐레이션 북토크 #4 — 카메라 앞과 뒤에서 나를 바라볼 때
   wrapper class = CSS 파일명 = S3 자산 폴더명 = book-talk-4
   playwith 와이드 페이지 (docs/content-maintenance/playwith-wide-page.md 준수) */

/* post-body 는 <head> 접근 불가 → 폰트는 CSS @import 로 (§12-B-4) */
@import url('https://fonts.googleapis.com/css2?family=Jost:wght@200;300;400;500&display=swap');
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css');

/* ---------- wrapper (base + 와이드 breakout §4·§5) ---------- */
.book-talk-4{
  --bg: #ffffff;
  --bg-2: #f3f3f3;
  --beige: #f3f3f3;
  --ink: #171717;
  --ink-2: #4a4a4a;
  --muted: #909090;
  --line: #d8d8d8;
  --line-soft: #ececec;
  --rust: #9a9a9a;
  --rust-deep: #1a1a1a;
  --paper: #f7f7f7;
  --max: 1130px;

  position: relative !important;
  width: 100% !important;
  margin: 0 !important;

  background: var(--bg);
  color: var(--ink);
  font-family: "Pretendard", "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* col-xl-6.col-xl-push-3 컬럼을 뚫고 .l-wrap(1360px) 전체 폭 사용.
   sticky/fixed 자식 없음 → transform breakout 사용 (§4). */
@media (min-width: 60em){
  .book-talk-4{
    width: 100vw !important;
    max-width: 1360px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
  }
}

.book-talk-4 *{ box-sizing: border-box; }
.book-talk-4 img{ display: block; max-width: 100%; }
.book-talk-4 a{ color: inherit; }
.book-talk-4 a.lnk{ text-decoration: underline; text-underline-offset: 2px; }
.book-talk-4 em{ color: inherit; font-style: italic; }  /* site em{color:#029570} 방어 (§3-3) */

/* ---------- hero ---------- */
.book-talk-4 .hero{
  position: relative;
  width: 100%;
  overflow: hidden;
  background: #1a1a1a;
}
.book-talk-4 .hero-img{
  width: 100%;
  height: auto;
  display: block;
}

/* ---------- section frame ---------- */
.book-talk-4 .wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.book-talk-4 .eyebrow{
  font-family: "Jost", sans-serif;
  font-weight: 400;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-size: 11px;
  color: var(--rust);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.book-talk-4 .eyebrow::before{
  content: ""; width: 28px; height: 1px; background: var(--rust);
  display: inline-block;
}

/* ---------- intro ---------- */
.book-talk-4 .intro{ padding: 96px 0 64px; }
.book-talk-4 .intro-single{ max-width: 860px; margin: 0 auto; }
.book-talk-4 .intro .eyebrow{ margin-bottom: 22px; }
.book-talk-4 .intro h1{
  margin: 0 0 32px;
  font-family: inherit;
  font-weight: 400;
  font-size: 38px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
  word-break: keep-all;
}
.book-talk-4 .intro p{
  margin: 0 0 18px;
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.85;
  text-wrap: pretty;
}
.book-talk-4 .intro .by{
  margin-top: 28px;
  font-weight: 500;
  color: var(--ink);
  font-size: 15px;
}
.book-talk-4 .intro p:last-child{ margin-bottom: 0; }

/* ---------- curation ---------- */
.book-talk-4 .curation{ padding: 96px 0; background: var(--beige); }

.book-talk-4 .section-head{
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}
.book-talk-4 .section-head h2{
  margin: 14px 0 0;
  font-family: inherit;
  font-weight: 400;
  font-size: 32px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.book-talk-4 .section-head .en-h{
  font-family: "Jost", sans-serif;
  font-weight: 300;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--muted);
}
.book-talk-4 .head-guide{
  margin: 14px 0 0;
  font-size: 14px;
  color: var(--muted);
  letter-spacing: -0.005em;
}

/* thumbnail row (desktop) */
.book-talk-4 .curation-thumbs{
  display: grid;
  grid-template-columns: repeat(18, 1fr);
  gap: 7px;
  margin-bottom: 44px;
}
.book-talk-4 .thumb-btn{
  appearance: none;
  border: 0;
  padding: 0;
  margin: 0;
  background: var(--paper);
  cursor: pointer;
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  display: block;
  border: 1px solid var(--line-soft);
  transition: border-color .2s ease, transform .2s ease;
}
.book-talk-4 .thumb-btn img{
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 8px;
  transition: transform .4s ease;
}
.book-talk-4 .thumb-btn::after{
  content: "";
  position: absolute; inset: 0;
  background: rgba(255,255,255,0.55);
  transition: opacity .25s ease;
  opacity: 1;
}
.book-talk-4 .thumb-btn:hover{ border-color: var(--muted); }
.book-talk-4 .thumb-btn:hover img{ transform: scale(1.04); }
.book-talk-4 .thumb-btn.is-active{
  border-color: var(--ink);
  box-shadow: 0 10px 24px -14px rgba(0,0,0,0.4);
}
.book-talk-4 .thumb-btn.is-active::after{ opacity: 0; }
.book-talk-4 .thumb-num{
  position: absolute;
  left: 6px; top: 5px;
  z-index: 2;
  font-family: "Jost", sans-serif;
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: rgba(255,255,255,0.9);
  padding: 1px 6px;
  line-height: 1.5;
}
.book-talk-4 .thumb-btn.is-active .thumb-num{
  background: var(--ink);
  color: #fff;
}

/* select picker (mobile) */
.book-talk-4 .curation-select{
  position: relative;
  display: none;
  margin-bottom: 40px;
}
.book-talk-4 .curation-select::after{
  content: "▾";
  position: absolute;
  right: 18px; top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--muted);
  font-size: 12px;
}
.book-talk-4 .curation-select select{
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  border: 1px solid var(--line);
  background: #fff;
  padding: 14px 44px 14px 16px;
  font-family: inherit;
  font-size: 15px;
  line-height: 1.4;
  color: var(--ink);
  border-radius: 0;
}

/* detail stage */
.book-talk-4 .curation-stage{
  border-top: 1px solid var(--line);
  padding-top: 48px;
}
.book-talk-4 .book-panel{ display: none; }
.book-talk-4 .book-panel.is-active{
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 64px;
  align-items: start;
}
.book-talk-4 .book-cover{
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  /* 명시적 width 없이 grid-cell stretch에 의존하면, aspect-ratio 붙은 figure가
     stage(cross-origin)에서 셀(340px)을 안 채우고 콘텐츠 폭(170px)으로 줄어듦.
     셀 채움을 width:100%로 명시 강제 (§5). */
  width: 100% !important;
  aspect-ratio: 3 / 4 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 22px !important;
  box-shadow: 0 24px 48px -30px rgba(0,0,0,0.3);
  overflow: hidden;
}
/* stage(cross-origin CSS)에선 img의 max-width/width:auto 사이징이 사이트 전역
   img 룰에 밀려 유실됨(§5). fill+contain 을 !important 로 강제 (speaker-figure 동일 패턴). */
.book-talk-4 .book-cover img{
  width: 100% !important;
  height: 100% !important;
  object-fit: contain !important;
}
.book-talk-4 .book-info .book-num{
  font-family: "Jost", sans-serif;
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--rust);
}
.book-talk-4 .book-info h3{
  margin: 10px 0 4px;
  font-family: inherit;
  font-weight: 500;
  font-size: 26px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
  word-break: keep-all;
}
.book-talk-4 .book-info .book-author{
  margin: 0;
  font-size: 15.5px;
  color: var(--ink-2);
  font-weight: 500;
}
.book-talk-4 .book-info .book-meta{
  margin: 18px 0 24px;
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  font-family: "Jost", sans-serif;
  font-size: 13px;
  letter-spacing: 0.03em;
  line-height: 1.7;
  color: var(--muted);
}
.book-talk-4 .book-info .book-desc{
  margin: 0;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.9;
  text-wrap: pretty;
}

/* ---------- details (at a glance) ---------- */
.book-talk-4 .details{ padding: 88px 0; background: var(--bg); }
.book-talk-4 .info-grid{
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.book-talk-4 .info-cell{
  background: var(--bg);
  padding: 28px 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 132px;
}
.book-talk-4 .info-cell .label{
  font-family: "Jost", sans-serif;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 10.5px;
  color: var(--rust);
}
.book-talk-4 .info-cell .value{
  font-family: inherit;
  font-weight: 500;
  font-size: 19px;
  line-height: 1.45;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.book-talk-4 .info-cell .sub{
  font-size: 13.5px;
  color: var(--ink-2);
  line-height: 1.6;
}
.book-talk-4 .info-cell.span-3{ grid-column: span 3; }
.book-talk-4 .info-cell.span-4{ grid-column: span 4; }
.book-talk-4 .info-cell.span-6{ grid-column: span 6; }
.book-talk-4 .info-cell.span-12{ grid-column: span 12; }
.book-talk-4 .info-cell.feature{ background: #e6e6e6; }
.book-talk-4 .info-cell.feature .value{ font-size: 24px; }

/* ---------- speaker ---------- */
.book-talk-4 .speaker{ padding: 96px 0; background: var(--beige); }
.book-talk-4 .speaker-grid{
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 80px;
  align-items: start;
}
.book-talk-4 .speaker-figure{
  margin: 0;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: #1a1a1a;
  box-shadow: 0 24px 48px -28px rgba(0,0,0,0.25);
}
.book-talk-4 .speaker-figure img{
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.book-talk-4 .speaker h2{
  margin: 14px 0 6px;
  font-family: inherit;
  font-weight: 400;
  font-size: 32px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.book-talk-4 .speaker .role{
  margin: 0 0 28px;
  font-family: "Jost", sans-serif;
  font-weight: 300;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--muted);
}
.book-talk-4 .speaker p{
  margin: 0 0 18px;
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.9;
  text-wrap: pretty;
}
.book-talk-4 .speaker p:last-child{ margin-bottom: 0; }

/* ---------- notice ---------- */
.book-talk-4 .notice-sec{ padding: 88px 0 96px; background: var(--bg); }
.book-talk-4 .notice-body{
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 80px;
  align-items: start;
}
.book-talk-4 .notice-sec ul{
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.book-talk-4 .notice-sec li{
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-2);
  text-wrap: pretty;
}
.book-talk-4 .notice-sec li::before{
  content: "—";
  position: absolute;
  left: 0;
  color: var(--rust);
}

/* ---------- responsive ---------- */
@media (max-width: 880px){
  .book-talk-4 .notice-body,
  .book-talk-4 .speaker-grid{
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .book-talk-4 .section-head{ flex-direction: column; align-items: flex-start; gap: 8px; }
  .book-talk-4 .info-cell.span-3,
  .book-talk-4 .info-cell.span-4,
  .book-talk-4 .info-cell.span-6{ grid-column: span 6; }
  .book-talk-4 .speaker-figure{ max-width: 420px; }

  /* switch thumbnail row → select picker */
  .book-talk-4 .curation-thumbs{ display: none; }
  .book-talk-4 .curation-select{ display: block; }

  .book-talk-4 .book-panel.is-active{
    grid-template-columns: 260px 1fr;
    gap: 40px;
  }
}

@media (max-width: 640px){
  .book-talk-4 .book-panel.is-active{
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .book-talk-4 .book-cover{ max-width: 300px; }
}

@media (max-width: 560px){
  .book-talk-4{ font-size: 15px; }
  .book-talk-4 .wrap{ padding: 0 18px; }

  .book-talk-4 .intro{ padding: 56px 0 40px; }
  .book-talk-4 .intro h1{ font-size: 28px; }
  .book-talk-4 .intro p{ font-size: 14.5px; }

  .book-talk-4 .curation{ padding: 56px 0; }
  .book-talk-4 .curation-stage{ padding-top: 36px; }
  .book-talk-4 .book-info h3{ font-size: 22px; }

  .book-talk-4 .details{ padding: 56px 0; }
  .book-talk-4 .speaker{ padding: 64px 0; }
  .book-talk-4 .speaker h2{ font-size: 26px; }
  .book-talk-4 .notice-sec{ padding: 56px 0 72px; }
  .book-talk-4 .section-head h2{ font-size: 24px; }

  .book-talk-4 .info-grid{ grid-template-columns: 1fr; }
  .book-talk-4 .info-cell.span-3,
  .book-talk-4 .info-cell.span-4,
  .book-talk-4 .info-cell.span-6,
  .book-talk-4 .info-cell.span-12{ grid-column: span 1; }
  .book-talk-4 .info-cell{ padding: 22px 20px 24px; min-height: 0; }
  .book-talk-4 .info-cell .value{ font-size: 17px; }
  .book-talk-4 .info-cell.feature .value{ font-size: 20px; }
}
