@font-face {
  font-family: 'Hanken Grotesk';
  src: url('/fonts/hanken-grotesk.woff2') format('woff2');
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans KR';
  src: url('/fonts/noto-sans-kr.woff2') format('woff2');
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}
:root {
  color-scheme: dark;
  --line: #555;
  --muted: #a4a4a4;
  --latin: 'Hanken Grotesk', 'Noto Sans KR', Arial, sans-serif;
  --korean: 'Noto Sans KR', sans-serif;
  font-family: var(--latin);
  font-synthesis: none;
}
* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; background: #000; color: #fff; }
body { overflow: hidden; }
a { color: inherit; text-decoration: none; }
a:focus-visible, summary:focus-visible { outline: 2px solid #fff; outline-offset: -5px; }
img { display: block; max-width: 100%; }
::selection { color: #000; background: #fff; }
.skip-link { position: fixed; z-index: 20; top: -100px; left: 12px; padding: 10px 14px; background: #fff; color: #000; }
.skip-link:focus { top: 12px; }

.book-app { --spine: clamp(48px, 4.5vw, 68px); --page-inset: clamp(25px, 4vw, 76px); --track-indent: 45px; --t1-size: clamp(16px, 1.2vw, 18px); --t2-size: 14px; --t3-size: 13px; display: flex; width: 100%; height: 100svh; overflow: hidden; }
.book-volume { position: relative; flex: none; width: var(--spine); height: 100%; min-width: 0; overflow: hidden; border-right: 1px solid var(--line); background: #000; transition: width .85s cubic-bezier(.25,.7,.15,1); }
.book-volume:last-child { border-right: 0; }
.book-app[data-view='cover'] .cover-panel,
.book-app[data-view='studio'] .studio-panel,
.book-app[data-view='shuttle'] .shuttle-panel,
.book-app[data-view='ocoro'] .ocoro-panel { width: calc(100% - 3 * var(--spine)); }
.volume-spine { position: absolute; inset: 0; z-index: 2; display: flex; justify-content: flex-start; align-items: center; overflow: hidden; padding: clamp(35px, 6svh, 72px) 10px 26px; background: #050505; color: #c8c8c8; font-size: clamp(14px, 1.25vw, 20px); letter-spacing: -.025em; writing-mode: vertical-rl; opacity: 1; transition: background .2s ease; }
.volume-spine span { white-space: nowrap; }
.volume-spine:hover { background: #232323; color: #fff; }
.studio-panel .volume-spine { background: #0a0a0a; }
.shuttle-panel .volume-spine { background: #101010; }
.ocoro-panel .volume-spine { background: #161616; }
.cover-panel::before { content: ''; position: absolute; z-index: 0; inset: 0 auto 0 0; width: calc(100vw - 3 * var(--spine)); background: linear-gradient(rgba(0, 0, 0, .3), rgba(0, 0, 0, .3)), url('/assets/whale-cover-d5d205bd.jpg') center / cover no-repeat #000; pointer-events: none; }
.cover-panel .volume-spine { background: transparent; color: #fff; text-shadow: 0 1px 4px #000; }
.cover-panel .volume-content { z-index: 1; }
.volume-content { position: absolute; inset: 0 auto 0 0; width: calc(100vw - 3 * var(--spine)); height: 100%; overflow: hidden; visibility: hidden; }
.book-app[data-view='cover'] .cover-panel .volume-content,
.book-app[data-view='studio'] .studio-panel .volume-content,
.book-app[data-view='shuttle'] .shuttle-panel .volume-content,
.book-app[data-view='ocoro'] .ocoro-panel .volume-content { visibility: visible; }
.book-volume[data-active='false'] .volume-content { clip-path: inset(0 100% 0 0); }
.book-app[data-view='cover'] .cover-panel .volume-spine,
.book-app[data-view='studio'] .studio-panel .volume-spine,
.book-app[data-view='shuttle'] .shuttle-panel .volume-spine,
.book-app[data-view='ocoro'] .ocoro-panel .volume-spine { opacity: 0; pointer-events: none; }

.cover-content { display: flex; flex-direction: column; align-items: flex-start; min-height: 100%; padding: clamp(90px, 14svh, 170px) clamp(28px, 5vw, 96px) clamp(35px, 5svh, 60px); text-align: left; }
.cover-content h1 { margin: -.08em 0 0; font-size: clamp(72px, 10vw, 160px); font-weight: 700; line-height: .95; letter-spacing: -.075em; }
.cover-imprint { margin-top: auto; }
.cover-imprint p { margin: 0; font-size: 14px; font-weight: 400; letter-spacing: -.02em; }
.cover-imprint small { display: block; margin-top: 5px; color: var(--muted); font-size: 10px; font-weight: 400; letter-spacing: .015em; }
.language-switch { position: absolute; z-index: 3; left: 50%; bottom: 31px; display: grid; place-items: center; width: 30px; height: 30px; padding: 3px; border: 0; background: transparent; color: #fff; cursor: pointer; transform: translateX(-50%); }
.language-switch svg { width: 22px; height: 22px; stroke: currentColor; stroke-width: 1.35; stroke-linecap: round; stroke-linejoin: round; }
.language-switch .lang-icon-ko { stroke-width: 1.5; }
.language-switch:hover { color: var(--muted); }
.language-switch:focus-visible { outline: 1px solid #fff; outline-offset: 4px; }
.lang-icon-ko, .book-app[data-lang='ko'] .lang-icon-en { display: none; }
.book-app[data-lang='ko'] .lang-icon-ko { display: block; }
.book-app[data-view='cover'] .cover-panel > .language-switch { display: none; }
.panel-scroll { width: 100%; height: 100%; overflow-y: auto; overscroll-behavior: contain; scrollbar-color: #666 #000; scrollbar-width: thin; }
.page-head { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; padding: clamp(30px, 4vw, 68px) var(--page-inset) 0; color: var(--muted); font-size: 12px; line-height: 1.3; letter-spacing: .015em; }
.page-head-number { margin-left: auto; text-align: right; }
.reading-spread { padding: clamp(75px, 11svh, 135px) var(--page-inset) 100px; }
.reading-column { min-width: 0; max-width: 780px; }
.reading-column.ko { font-family: var(--korean); word-break: keep-all; }
.book-app[data-lang='en'] .reading-column.ko, .book-app[data-lang='en'] .language-column.ko,
.book-app[data-lang='ko'] .reading-column.en, .book-app[data-lang='ko'] .language-column.en { display: none; }
.reading-title { margin: 0 0 100px; font-size: var(--t2-size); font-weight: 700; line-height: 1.85; letter-spacing: -.01em; }
.reading-copy, .reading-spread .editorial-copy { max-width: 640px; margin: 0 0 30px; font-size: clamp(16px, 1.12vw, 18px); line-height: 1.85; letter-spacing: -.018em; white-space: pre-line; }
.reading-column .signature { margin-top: 45px; }

.chapter-stack { --chapter-spine: 44px; width: 100%; height: 100%; overflow-y: auto; overflow-anchor: none; scrollbar-color: #666 #000; scrollbar-width: thin; }
.chapter-volume { position: relative; height: var(--chapter-spine); min-height: var(--chapter-spine); overflow: hidden; border-bottom: 1px solid var(--line); transition: height .7s cubic-bezier(.25,.7,.15,1); }
.chapter-volume[data-active='true'] { height: calc(100% - var(--chapter-spine)); }
.chapter-volume[data-active='true']:last-child { height: 100%; }
.chapter-spine { position: absolute; inset: 0; z-index: 2; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; height: var(--chapter-spine); gap: 14px; overflow: hidden; padding: 0 var(--page-inset); background: #090909; opacity: 1; transition: background .2s ease; }
.chapter-spine:hover { background: #202020; }
.chapter-spine span:last-child { justify-self: end; color: var(--muted); font-size: 12px; }
.chapter-spine strong { overflow: hidden; font-size: clamp(16px, 1.65vw, 24px); font-weight: 400; text-overflow: ellipsis; white-space: nowrap; }
.chapter-content { position: absolute; inset: 0; width: 100%; height: 100%; overflow: hidden; visibility: hidden; }
.chapter-volume[data-active='true'] .chapter-spine { opacity: 0; pointer-events: none; }
.chapter-volume[data-active='true'] .chapter-content { visibility: visible; }
.chapter-scroll { width: 100%; height: 100%; overflow-y: auto; overscroll-behavior: auto; scrollbar-color: #666 #000; scrollbar-width: thin; padding-bottom: 120px; }
.chapter-scroll > :is(.chapter-opening, .language-spread, .chapter-illustration, .record-notes, .track-section, .follow-section, .reading-spread, .appendix-page) { width: min(720px, calc(100% - 2 * var(--page-inset))); margin-left: var(--page-inset); margin-right: auto; padding-left: 0; padding-right: 0; }
.chapter-opening { display: block; }
.chapter-heading { min-width: 0; }
.chapter-heading h2 { margin: clamp(75px, 10svh, 110px) 0 12px; font-size: var(--t2-size); font-weight: 700; line-height: 1.85; letter-spacing: -.01em; }
.chapter-meta { margin: 0; color: var(--muted); font-size: var(--t3-size); line-height: 1.7; }
.chapter-illustration { margin-top: 50px; }
.chapter-illustration .artwork { max-width: min(580px, calc(100% - var(--track-indent))); margin: 0; padding: 0; }
.chapter-illustration .artwork img { width: 100%; height: auto; object-fit: contain; }
.language-spread { margin-top: 100px; }
.language-column { min-width: 0; padding: 0; }
.editorial-copy { margin: 0 0 32px; white-space: pre-line; font-size: var(--t1-size); line-height: 1.85; letter-spacing: -.018em; }
.editorial-copy.ko { font-family: var(--korean); word-break: keep-all; }
.preface .editorial-copy { font-size: var(--t1-size); }
.chapter-scroll .editorial-copy { margin-bottom: 16px; font-weight: 600; }
.signature { margin: 65px 0 0; font-size: var(--t2-size); }
.record-notes, .track-section, .follow-section { padding: 0; }
.record-notes { margin-top: 55px; }
.track-section { margin-top: 40px; }
.follow-section { margin-top: 100px; }
.book-app[data-lang='en'] .record-notes-copy.ko, .book-app[data-lang='ko'] .record-notes-copy.en { display: none; }
.record-notes-copy.en .content-text { font-family: var(--latin); font-size: var(--t2-size); line-height: 1.85; }
.content-text { margin: 0 0 29px; font-family: var(--korean); font-size: var(--t2-size); line-height: 1.85; white-space: pre-line; word-break: keep-all; }
.record-notes .content-text { margin-bottom: 18px; font-size: var(--t2-size); line-height: 1.85; letter-spacing: -.01em; }
.content-heading { margin: 0 0 25px; font-size: var(--t2-size); font-weight: 400; }
.content-heading a, .content-text a { text-decoration: underline; text-underline-offset: 4px; }
.track-section, .follow-section { display: block; }
.track { margin-bottom: 4px; }
.track summary { display: flex; align-items: baseline; gap: 20px; cursor: pointer; list-style: none; font-size: var(--t2-size); line-height: 1.65; }
.track summary::-webkit-details-marker { display: none; }
.track-index { flex: 0 0 25px; color: var(--muted); font-size: var(--t3-size); }
.track[open] .track-name { font-weight: 600; }
.track-reveal { overflow: hidden; }
.track-body { padding: 38px 0 68px var(--track-indent); }
.track-body .content-text { margin-bottom: 20px; font-size: var(--t2-size); line-height: 1.85; }
.track-lyrics-label, .track-credit-label { margin: 0 0 20px; color: var(--muted); font-size: var(--t3-size); line-height: 1.7; }
.track-credit-label { margin-top: 50px; }
.track-credit { margin: 0 0 5px; color: var(--muted); font-family: var(--latin); font-size: var(--t3-size); line-height: 1.7; white-space: pre-line; word-break: keep-all; }
.track-credit.ko { font-family: var(--korean); }
.book-app[data-lang='en'] :is(.track-credit, .track-credit-label, .track-lyrics-label).ko,
.book-app[data-lang='ko'] :is(.track-credit, .track-credit-label, .track-lyrics-label).en { display: none; }
.video { position: relative; width: min(580px, 100%); aspect-ratio: 16 / 9; margin: 25px 0; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.follow-inline { display: flex; align-items: baseline; gap: 8px; width: 100%; margin: 0; overflow-x: auto; white-space: nowrap; font-size: var(--t2-size); line-height: 1.85; scrollbar-color: #666 #000; scrollbar-width: thin; }
.follow-inline a:hover { text-decoration: underline; text-underline-offset: 4px; }
.follow-separator { color: var(--muted); }
.book-app[data-lang='en'] .appendix .ko, .book-app[data-lang='ko'] .appendix .en { display: none; }
.appendix-page h2 { margin: clamp(75px, 10svh, 110px) 0 0; font-size: var(--t2-size); font-weight: 700; line-height: 1.85; }
.appendix-group { margin-top: 80px; }
.appendix-group h3 { margin: 0; font-size: var(--t2-size); font-weight: 600; line-height: 1.85; }
.appendix-index { margin-top: 12px; }
.appendix-entry { display: grid; grid-template-columns: minmax(0, 1fr) 16px; column-gap: 12px; align-items: baseline; margin: 0 0 12px; }
.appendix-entry:hover .appendix-entry-title { text-decoration: underline; text-underline-offset: 4px; }
.appendix-entry-title { grid-column: 1; grid-row: 1; min-width: 0; font-size: var(--t2-size); font-weight: 600; line-height: 1.85; }
.appendix-entry-page { grid-column: 2; grid-row: 1; justify-self: end; color: var(--muted); font-size: var(--t3-size); line-height: 1.7; }
.appendix-entry-note { grid-column: 1; grid-row: 2; max-width: 620px; margin: 2px 0 0; color: var(--muted); font-size: var(--t3-size); line-height: 1.55; }
.appendix-entry-note.ko { font-family: var(--korean); word-break: keep-all; }

.not-found { display: flex; flex-direction: column; justify-content: center; min-height: 100svh; padding: 7vw; }
.not-found h1 { font-size: clamp(50px, 8vw, 120px); font-weight: 400; }
.not-found p { font-size: 18px; }
.not-found a { margin-top: 20px; text-decoration: underline; }
@media (max-width: 900px) {
  .book-app { --spine: 44px; }
  .volume-spine { font-size: 15px; }
  .cover-content h1 { font-size: clamp(68px, 10vw, 100px); }
}
@media (max-width: 650px) {
  .book-app { --spine: 42px; --page-inset: 20px; --t1-size: 16px; flex-direction: column; }
  .book-volume { width: 100% !important; height: var(--spine); min-height: var(--spine); border-right: 0; border-bottom: 1px solid var(--line); transition: height .7s cubic-bezier(.25,.7,.15,1); }
  .book-app[data-view='cover'] .cover-panel,
  .book-app[data-view='studio'] .studio-panel,
  .book-app[data-view='shuttle'] .shuttle-panel,
  .book-app[data-view='ocoro'] .ocoro-panel { height: calc(100% - 3 * var(--spine)); }
  .volume-spine { align-items: center; height: var(--spine); padding: 0 20px; font-size: 14px; writing-mode: horizontal-tb; }
  .volume-content { width: 100%; height: calc(100svh - 3 * var(--spine)); }
  .cover-panel::before { width: 100%; height: calc(100svh - 3 * var(--spine)); }
  .cover-panel > .language-switch { top: 6px; right: 14px; bottom: auto; left: auto; transform: none; }
  .cover-content { padding: clamp(75px, 12svh, 120px) 20px 36px; }
  .cover-content h1 { font-size: clamp(58px, 14vw, 78px); }
  .cover-imprint p { font-size: 13px; }
  .page-head { padding: 26px 20px 0; font-size: 11px; }
  .reading-spread { display: block; padding: 56px 20px 80px; }
  .reading-title { margin-bottom: 100px; }
  .reading-copy, .reading-spread .editorial-copy { font-size: 16px; }
  .chapter-stack { --chapter-spine: 42px; }
  .chapter-spine { gap: 8px; }
  .chapter-spine strong { font-size: 16px; }
  .chapter-heading h2 { margin-top: 70px; }
  .chapter-meta { font-size: var(--t3-size); }
  .chapter-illustration { margin-top: 45px; }
  .language-spread { margin-top: 70px; }
  .editorial-copy { font-size: var(--t1-size); }
  .record-notes { margin-top: 50px; }
  .track-section { margin-top: 35px; }
  .follow-section { margin-top: 80px; }
  .follow-inline { gap: 2px; }
  .appendix-page h2 { margin-top: 70px; }
  .appendix-group { margin-top: 65px; }
  .appendix-index { margin-top: 10px; }
  .appendix-entry { margin-bottom: 12px; }
}
@media (max-width: 650px) and (max-height: 740px) {
  .cover-content { padding-top: 65px; }
  .chapter-stack { --chapter-spine: 38px; }
  .chapter-heading h2 { margin-top: 60px; }
}
@media (prefers-reduced-motion: reduce) {
  .book-volume, .volume-spine, .chapter-volume, .chapter-spine { transition: none; }
}