/* ============================================
   Book page only: the Dossier (spec §6.1). Shared components are in site.css.
   ============================================ */

/* ---------- first screen ---------- */
.dossier-hero { position: relative; overflow: hidden; padding: clamp(110px, 14vw, 150px) 0 clamp(56px, 8vw, 96px); }
.dossier-hero::before { content: ''; position: absolute; inset: 0; background: url(../images/map/terrain.svg) center / cover no-repeat; opacity: .55; pointer-events: none; }
.dossier-grid { position: relative; display: grid; grid-template-columns: auto minmax(220px, 380px) minmax(0, 1fr); gap: clamp(24px, 4vw, 64px); align-items: start; }
.dossier-grid .legend { padding-top: 8px; }
.cover { position: relative; display: block; }
.cover .paper { position: relative; display: block; transform: rotate(-2deg); transition: transform 450ms var(--ease-out); }
@media (hover: hover) and (pointer: fine) { .cover:hover .paper { transform: rotate(0deg) translateY(-6px) scale(1.02); } }
.cover img { box-shadow: 0 2px 3px rgba(0, 0, 0, .35), 0 30px 50px -14px rgba(0, 0, 0, .65); }
.cover .tape { position: absolute; top: -12px; left: 50%; width: 96px; height: 28px; transform: translateX(-50%) rotate(3deg); background: rgba(242, 242, 238, .55); }
.cover .seal { position: absolute; left: -26px; top: 6%; width: 96px; }
.dossier-copy h1 { font-weight: 900; font-size: clamp(2.4rem, 4.6vw, 4.4rem); line-height: .95; letter-spacing: -.025em; text-wrap: balance; }
.dossier-copy .subtitle { font-family: var(--display-zh); font-weight: 600; font-size: clamp(1.15rem, 1.6vw, 1.4rem); color: var(--red-lit); margin-top: .6em; }
.dossier-copy .desc { margin-top: 1em; max-width: 44ch; font-size: clamp(1.05rem, 1.2vw, 1.2rem); text-wrap: pretty; }
.order { margin-top: 1.6em; max-width: 460px; border-top: 1px solid var(--line); padding-top: 14px; }
.order .date { display: block; font-weight: 900; font-size: clamp(2rem, 3vw, 2.6rem); line-height: 1; letter-spacing: -.01em; }
.order .date small { display: block; font-weight: 600; font-size: max(.95rem, .4em); letter-spacing: 0; color: var(--mute); margin-bottom: .4em; }
.order .price { display: flex; justify-content: space-between; gap: 1rem; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 1.02rem; }
.order .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }

/* ---------- chapters (briefing cards by part) ---------- */
.book-parts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(16px, 2vw, 28px); align-items: start; }
.book-parts .part h3 { font-weight: 800; font-size: 1rem; color: var(--mute); border-top: 1px solid var(--line); padding-top: 10px; margin-bottom: 12px; }
.book-parts .part h3 .zh { margin-left: .4em; font-family: var(--display-zh); }
.book-parts .brief { margin-bottom: 14px; }
.book-parts .brief .zh { font-size: 1.05rem; }
.book-parts .free { display: inline-flex; align-items: center; gap: 10px; margin-top: .8em; font-weight: 800; }
.book-parts .seal-sm { width: 52px; }

/* ---------- quotes ---------- */
.quotes { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 80px); }
.quotes blockquote .cn { font-family: var(--display-zh); font-weight: 900; font-size: clamp(1.8rem, 3vw, 2.8rem); line-height: 1.3; }
.quotes blockquote .en { margin-top: .6em; font-size: clamp(1.05rem, 1.3vw, 1.25rem); max-width: 34ch; }
.quotes cite { display: block; margin-top: .8em; font-style: normal; font-weight: 600; font-size: .95rem; color: var(--mute); }

/* ---------- free chapter ---------- */
.free-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(32px, 5vw, 80px); align-items: start; }
.free-grid ul { list-style: none; margin-top: 1.2em; }
.free-grid li { padding: 10px 0; border-top: 1px solid var(--line); }
.free-card { position: relative; background: var(--table-deep); border: 1px solid var(--line); padding: 26px 24px 24px; }
.free-card .seal { position: absolute; right: -12px; top: -22px; width: 84px; }
.free-card h3 { font-weight: 900; font-size: 1.6rem; line-height: 1.1; }
.free-card p { margin-top: .6em; }
.free-card .btn { margin-top: 1em; }
.free-card .later { margin-top: 1.4em; padding-top: 1em; border-top: 1px solid var(--line); font-size: 1rem; color: var(--mute); }
.free-card .field { margin-top: 10px; }

/* ---------- who it's for ---------- */
.audience { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(20px, 3vw, 40px) clamp(32px, 5vw, 80px); }
.audience h3 { font-weight: 800; font-size: .95rem; letter-spacing: .28em; text-transform: uppercase; color: var(--contour); }
.audience p { margin-top: .5em; font-size: 1.1rem; max-width: 40ch; }

/* ---------- author ---------- */
.author { display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.author img { width: 100%; filter: grayscale(1) contrast(1.05); }
.author p { max-width: 58ch; margin-bottom: 1em; }

/* ---------- editions ---------- */
.editions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(20px, 3vw, 40px); margin-top: 1.4em; }
.edition { display: grid; grid-template-columns: minmax(90px, 140px) minmax(0, 1fr); gap: 20px; align-items: start; border-top: 1px solid var(--line); padding-top: 20px; }
.edition img { width: 100%; height: auto; box-shadow: 0 2px 3px rgba(0, 0, 0, .35), 0 18px 30px -12px rgba(0, 0, 0, .6); }
.edition h3 { font-weight: 900; font-size: 1.3rem; line-height: 1.25; margin: .2em 0 .4em; }
.edition p { margin-bottom: .6em; }
.ed-lang { font-size: .85rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--red-lit); }
.ed-meta { color: var(--mute); }
.ed-isbn { font-size: .92rem; font-weight: 600; letter-spacing: .02em; color: var(--mute); }
/* store links on each edition card: tappable outlined buttons */
.ed-stores { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; margin: .9em 0 .7em; }
.ed-stores-label { flex-basis: 100%; font-size: .9rem; font-weight: 800; color: var(--red-lit); }
.ed-stores a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 1em; border: 1.5px solid rgba(242, 242, 238, .6);
  color: var(--acetate); font-weight: 800; text-decoration: none; transition: border-color 150ms ease, background-color 150ms ease; }
.ed-stores a::after { content: '\2197'; margin-left: .45em; font-weight: 600; color: var(--mute); }
.ed-stores a:hover { border-color: var(--red-lit); background: rgba(240, 112, 95, .12); }
.edition .field { margin-top: 10px; }
[data-english="off"] .editions { grid-template-columns: minmax(0, 1fr); max-width: 560px; }

/* ---------- buy, notify, print ---------- */
.buy-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(20px, 3vw, 40px); align-items: start; margin-top: 1.4em; }
.buy-card { background: var(--table-deep); border: 1px solid var(--line); padding: 24px; }
.buy-card.primary { border-color: var(--acetate); }
.buy-card h3 { font-weight: 900; font-size: 1.5rem; }
.buy-card .amount { font-weight: 900; font-size: 2.4rem; line-height: 1; margin: .3em 0 .5em; }
.buy-card ul { list-style: none; margin-bottom: 1em; }
.buy-card li { padding: 6px 0; border-bottom: 1px solid var(--line); }
.buy-edition { border: 0; display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 4px; }
.buy-edition legend { font-weight: 800; margin-bottom: 6px; }
.buy-edition label { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; min-height: 44px; }
.buy-edition input { accent-color: var(--red-lit); width: 18px; height: 18px; }
.book-buy-form { display: grid; gap: 10px; }
.book-buy-form input { font: inherit; font-size: 1rem; padding: .75em .8em; border: 0; background: #fff; color: var(--ink); }
.book-buy-form button { justify-content: center; }
.book-buy-status { min-height: 1.4em; font-weight: 700; color: var(--red-lit); }
.buy-note { display: block; margin-top: 12px; font-size: .95rem; color: var(--mute); }
.buy-note a { color: var(--acetate); }
/* launch-week workbook offer (hero order box and buy section) */
.offer-note { margin: 14px 0 0; padding: .7em .9em; border: 1px solid rgba(240, 112, 95, .6); background: rgba(192, 57, 43, .14);
  color: var(--acetate); font-weight: 700; font-size: .98rem; line-height: 1.45; }
.team-line { margin-top: 1.4em; color: var(--mute); }
.team-line a { color: var(--acetate); }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 18px 0; font-weight: 800; font-size: 1.15rem; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-weight: 400; color: var(--red-lit); }
.faq details[open] summary::after { content: '−'; }
.faq details p { padding-bottom: 18px; max-width: 64ch; }

@media (max-width: 1100px) { .book-parts { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 900px) {
  /* phone first screen: small cover beside the title, then the order box (actions), then the description */
  .dossier-hero { padding-top: 92px; }
  .dossier-grid { grid-template-columns: minmax(96px, 30%) minmax(0, 1fr); gap: 16px 18px; align-items: center; }
  .dossier-grid .legend { display: none; }
  .dossier-copy { display: contents; }
  .cover { grid-column: 1; grid-row: 1; }
  .cover .seal { width: 52px; left: -8px; top: -4%; }
  .cover .tape { width: 56px; height: 18px; }
  .dossier-copy h1 { grid-column: 2; grid-row: 1; font-size: clamp(1.7rem, 7.4vw, 2.4rem); }
  .dossier-copy .subtitle { display: none; }
  .order { grid-column: 1 / -1; grid-row: 2; margin-top: 4px; }
  .dossier-copy .desc { grid-column: 1 / -1; grid-row: 3; margin-top: 4px; }
  .book-parts, .quotes, .free-grid, .audience, .author, .buy-grid, .editions { grid-template-columns: minmax(0, 1fr); }
  .edition { grid-template-columns: 96px minmax(0, 1fr); gap: 16px; }
  .free-card .seal { right: 8px; }
}