/* 四元素长卷外壳。章节节点仍由原 HTML 提供。半幅图沿用 book.css 的 200% 裁切，这里不改那些图。 */

body[data-classic="volume"] {
  --ink: #2b2925;
  --bg: #f3ede2;
  --line: #d3c9b6;
  --muted: #5c564e;
  --dot: var(--pine);
  background: var(--paper);
  color: #2b2925;
  font-size: 19px;
  line-height: 1.85;
}

body[data-classic="volume"][data-element="earth"] { --dot: #2f4a38; }
body[data-classic="volume"][data-element="water"] { --dot: #5d7380; }
body[data-classic="volume"][data-element="fire"] { --dot: #9c6b36; }
body[data-classic="volume"][data-element="air"] { --dot: #6a7564; }

body[data-classic="volume"] .bookbar {
  background: var(--paper);
  color: var(--pine);
  border-bottom: 1px solid var(--line);
}

body[data-classic="volume"] .bookbar a,
body[data-classic="volume"] .bookbar button,
body[data-classic="volume"] .read-label {
  color: var(--pine);
}

body[data-classic="volume"] .classic-series,
body[data-classic="volume"] .classic-home {
  font-size: 15px;
}

body[data-classic="volume"] .toc-toggle {
  color: var(--pine);
  border: 1px solid var(--line);
  background: transparent;
}

body[data-classic="volume"] .bookbar :focus-visible,
body[data-classic="volume"] .desktop-hero :focus-visible,
body[data-classic="volume"] .mobile-open :focus-visible,
body[data-classic="volume"] .vignette-close:focus-visible {
  outline: 2px solid var(--pine);
  outline-offset: 3px;
}

body[data-classic="volume"] #opening {
  padding-top: 76px;
}

body[data-classic="volume"] .desktop-hero,
body[data-classic="volume"] .mobile-open {
  background: var(--paper);
  color: #2b2925;
}

body[data-classic="volume"] .hero-shade {
  display: none;
}

body[data-classic="volume"] .desktop-hero img,
body[data-classic="volume"] .mobile-open img {
  background: var(--sheet);
}

body[data-classic="volume"] .hero-kicker,
body[data-classic="volume"] .ch-no,
body[data-classic="volume"] .part-no {
  color: var(--bronze-ink);
}

body[data-classic="volume"] .hero-kicker::before,
body[data-classic="volume"] .ch-no::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  background: var(--dot);
  vertical-align: 1px;
}

body[data-classic="volume"] .hero-copy .guide,
body[data-classic="volume"] .mobile-title p,
body[data-classic="volume"] .measure {
  font-size: 19px;
  line-height: 1.85;
}

body[data-classic="volume"] .measure {
  max-width: 34em;
}

body[data-classic="volume"] .down,
body[data-classic="volume"] .series-jump a,
body[data-classic="volume"] .series-links a {
  color: var(--pine);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-bottom-color: var(--line);
}

body[data-classic="volume"] .series-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
}

body[data-classic="volume"] .paper {
  background: var(--paper);
  color: #2b2925;
}

body[data-classic="volume"] .chapter > h2,
body[data-classic="volume"] .front-block > h2,
body[data-classic="volume"] .part-break > h2 {
  color: var(--pine);
  font-size: clamp(32px, 4vw, 44px);
  line-height: 1.2;
}

body[data-classic="volume"] .chapter {
  border-top: 1px solid var(--line);
  padding-top: 36px;
}

body[data-classic="volume"] .toc-panel {
  border-left-color: var(--line);
}

body[data-classic="volume"] .toc-panel a[aria-current="true"] {
  box-shadow: inset 3px 0 0 var(--dot);
}

body[data-classic="volume"] summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  cursor: pointer;
}

body[data-classic="volume"] .vignette-dialog {
  background: var(--sheet);
  color: #2b2925;
  border: 1px solid var(--line);
}

body[data-classic="volume"] .vignette-dialog::backdrop {
  background: rgba(30, 58, 45, 0.28);
}

body[data-classic="volume"] .vignette-close {
  color: var(--pine);
  border: 1px solid var(--line);
  background: var(--sheet);
}

@media (min-width: 801px) {
  body[data-classic="volume"] .desktop-hero {
    display: grid;
    grid-template-columns: minmax(0, 42fr) minmax(0, 58fr);
    grid-template-rows: auto auto;
    height: auto;
    min-height: 0;
    overflow: visible;
    align-items: center;
    column-gap: 20px;
  }

  body[data-classic="volume"] .desktop-hero .hero-copy {
    grid-column: 1;
    grid-row: 1;
    position: relative;
    z-index: 1;
    width: auto;
    max-width: 36em;
    padding: 12px 12px 8px 40px;
    color: #2b2925;
  }

  body[data-classic="volume"] .desktop-hero > .down {
    grid-column: 1;
    grid-row: 2;
    position: static;
    left: auto;
    bottom: auto;
    width: fit-content;
    margin: 0 12px 36px 40px;
  }

  body[data-classic="volume"] .desktop-hero > img {
    grid-column: 2;
    grid-row: 1 / span 2;
    position: static;
    inset: auto;
    display: block;
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: min(78vh, 860px);
    object-fit: contain;
    object-position: center center;
    justify-self: center;
    align-self: center;
  }

  body[data-classic="volume"] .desktop-hero h1 {
    font-size: clamp(64px, 5vw, 88px);
    line-height: 1.05;
    color: var(--pine);
  }

  body[data-classic="volume"] .paper-grid {
    width: min(1180px, calc(100% - 48px));
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 36px;
  }
}

@media (max-width: 800px) {
  body[data-classic="volume"] {
    font-size: 18px;
  }

  body[data-classic="volume"] #opening {
    padding-top: 128px;
  }

  body[data-classic="volume"] .desktop-hero {
    display: none;
  }

  body[data-classic="volume"] .mobile-open {
    display: flex;
    flex-direction: column;
    background: var(--paper);
    color: #2b2925;
  }

  body[data-classic="volume"] .mobile-title {
    order: -1;
    padding: 8px 16px 12px;
  }

  body[data-classic="volume"] .mobile-open img {
    position: static;
    display: block;
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 42vh;
    object-fit: contain;
    object-position: center center;
    margin: 0 auto 12px;
  }

  body[data-classic="volume"] .mobile-title h1 {
    font-size: clamp(36px, 11vw, 48px);
    line-height: 1.12;
    color: var(--pine);
  }

  body[data-classic="volume"] .mobile-title .down {
    position: static;
    color: var(--pine);
  }

  body[data-classic="volume"] .toc-panel {
    top: 120px;
    background: var(--paper);
    color: #2b2925;
    border-bottom: 1px solid var(--line);
  }

  body[data-classic="volume"] .chapter > h2 {
    font-size: 32px;
  }
}

@media (max-width: 390px) {
  body[data-classic="volume"] .hero-copy,
  body[data-classic="volume"] .down {
    left: auto;
  }
}

/* Narrow bookbars keep complete navigation labels and give progress its own line. */
@media (max-width: 360px) {
  body[data-classic="volume"] .bookbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 2px 8px;
    padding: 4px 10px;
  }
  body[data-classic="volume"] .bookbar > a,
  body[data-classic="volume"] .bookbar > .toc-toggle {
    flex: 0 0 auto;
    width: auto;
    min-width: 0;
    white-space: nowrap;
  }
  body[data-classic="volume"] .bookbar > .toc-toggle {
    min-width: 44px;
  }
  body[data-classic="volume"] .bookbar > .read-label {
    flex: 1 0 100%;
    width: auto;
    max-width: none;
    margin: 0;
    overflow: visible;
    text-overflow: clip;
    white-space: normal;
    text-align: right;
    font-size: 13px;
    line-height: 1.5;
  }
}