/* =========================================================
   三藏閣 — 독자 화면 (Reader)
   가독성 최우선: 단일 컬럼, 18-20px 본문, 1.85 행간
   사이드바 트리 / 본문 / 우측 도구 레일
   ========================================================= */

.reader {
  display: grid;
  /* 본문(좌) · 도구레일(중) · 사이드바(우) */
  grid-template-columns: 1fr 64px 320px;
  min-height: calc(100vh - 64px);
  background: var(--paper);
}
.reader.is-tools-open { grid-template-columns: 1fr 360px 320px; }
.reader.is-sidebar-collapsed { grid-template-columns: 1fr 64px 0; }
.reader.is-sidebar-collapsed > .r-sidebar { display: none; }
.reader.is-sidebar-collapsed.is-tools-open { grid-template-columns: 1fr 360px 0; }

/* DOM 순서(사이드바 → 본문 → 도구레일)를 시각 순서(본문 → 도구 → 사이드바)로 재배치 */
.reader > .r-sidebar { order: 3; }
.reader > .r-main    { order: 1; }
.reader > .r-rail    { order: 2; }
.reader > .r-sidebar-backdrop { display: none; }
.reader > .r-sidebar-backdrop { display: none !important; }
@media (max-width: 1023px) { .reader > .r-sidebar-backdrop { display: none; } .reader.is-sidebar-open > .r-sidebar-backdrop { display: block !important; } }

/* 데스크톱: 사이드바 토글 가능 */
.r-toolbar__sb { display: inline-flex; }

/* 각주 표시 토글: 0이면 본문 마커와 풋노트 섹션 숨김 */
.reader[data-show-footnotes="0"] .r-fn-marker { display: none; }
.reader[data-show-footnotes="0"] .r-footnotes { display: none; }

/* 사이드바: 우측 경계로 이동 */
.reader > .r-sidebar { border-right: 0; border-left: 1px solid var(--rule-soft); }

/* ============================================================
   사이드바 — 트리 네비게이션
   ============================================================ */
.r-sidebar {
  border-right: 1px solid var(--rule-soft);
  background: var(--chrome-soft);
  position: sticky;
  top: 64px;
  align-self: start;
  height: calc(100vh - 64px);
  overflow-y: auto;
  overflow-x: hidden;
  transition: width 200ms ease;
}
.r-sidebar__head {
  position: sticky;
  top: 0;
  background: var(--chrome-soft);
  z-index: 2;
  padding: var(--s4) var(--s4) var(--s3);
  border-bottom: 1px solid var(--rule-soft);
}
.r-sidebar__title {
  font-family: var(--font-en);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: var(--s2);
}
.r-sidebar__sub {
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

/* 캐논 탭 (3개) */
.r-canon-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
}
.r-canon-tab {
  padding: var(--s3) var(--s2);
  background: var(--chrome-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--ink-mute);
  border-bottom: 2px solid transparent;
  transition: background 120ms ease, color 120ms ease;
}
.r-canon-tab .han {
  font-family: var(--font-cn);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}
.r-canon-tab:hover { background: var(--paper); }
.r-canon-tab.is-active {
  background: var(--paper);
  color: var(--ink);
  border-bottom-color: var(--c);
}
.r-canon-tab.is-active .han { color: var(--ink); }

/* 사이드바 보조 탭: 좁은 폭에서도 아이콘과 글자가 겹치지 않게 고정한다. */
.r-sidebar-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  background: var(--chrome-soft);
  border-bottom: 1px solid var(--rule-soft);
}
.r-sidebar-tab {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 9px 3px 8px;
  color: var(--ink-mute);
  font-size: 10.5px;
  line-height: 1;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.r-sidebar-tab > span {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 2px;
}
.r-sidebar-tab i {
  min-width: 14px;
  padding: 2px 4px;
  border-radius: 999px;
  background: var(--paper-deep);
  color: var(--ink-soft);
  font-family: var(--font-en);
  font-size: 9px;
  font-style: normal;
  text-align: center;
}
.r-sidebar-tab:hover { color: var(--ink); background: var(--paper-deep); }
.r-sidebar-tab.is-active {
  color: var(--ink);
  background: var(--paper);
  border-bottom-color: var(--ink);
}

/* 트리 */
.r-tree {
  padding: var(--s3) 0 var(--s7);
}
.r-tree__group { padding: 0; }
.r-tree__bu {
  display: flex;
  align-items: center;
  gap: var(--s2);
  padding: 8px var(--s4);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
  width: 100%;
  text-align: left;
  border-radius: 0;
  transition: background 80ms ease;
  min-width: 0;
}
.r-tree__bu:hover { background: var(--paper-deep); }
.r-tree__bu-dot {
  width: 8px;
  height: 8px;
  border-radius: 1px;
  background: var(--bu);
  flex-shrink: 0;
}
.r-tree__bu-han {
  font-family: var(--font-cn);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin-right: 4px;
  flex-shrink: 0;
}
.r-tree__bu-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.r-tree__bu-count {
  margin-left: auto;
  color: var(--ink-mute);
  font-family: var(--font-en);
  font-size: 10px;
  white-space: nowrap;
  flex-shrink: 0;
}
.r-tree__bu-caret {
  margin-left: auto;
  color: var(--ink-mute);
  transition: transform 120ms ease;
}
.r-tree__bu-count + .r-tree__bu-caret { margin-left: 0; }
.r-tree__bu[aria-expanded="true"] .r-tree__bu-caret { transform: rotate(90deg); }

.r-tree__sutras {
  padding: 4px 0 var(--s2);
  background: rgba(0,0,0,0);
}
.r-tree__sutra {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 6px var(--s4) 6px calc(36px + (var(--toc-depth, 0) * 14px));
  font-size: 12.5px;
  letter-spacing: 0.01em;
  color: var(--ink-soft);
  width: 100%;
  text-align: left;
  border-left: 2px solid transparent;
}
.r-tree__sutra:hover { background: var(--paper-deep); color: var(--ink); }
.r-tree__sutra.is-current {
  background: var(--paper);
  color: var(--ink);
  border-left-color: var(--bu, var(--ink));
}
.r-tree__sutra--corpus { position: relative; }
.r-tree__sutra--corpus.is-current {
  --toc-current-offset: calc(26px + (var(--toc-depth, 0) * 14px));
  background: linear-gradient(
    to right,
    transparent 0 var(--toc-current-offset),
    var(--paper) var(--toc-current-offset) 100%
  );
  border-left-color: transparent;
}
.r-tree__sutra--corpus.is-current::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--toc-current-offset);
  width: 2px;
  background: var(--bu, var(--ink));
}
.r-tree__sutra-han {
  font-family: var(--font-cn);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
}
.r-tree__sutra.is-current .r-tree__sutra-han { color: var(--ink-soft); }
.r-tree__sutra:disabled { cursor: wait; opacity: 0.65; }
.r-tree__sutra-title,
.r-tree__sutra-pali {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.r-tree__sutra-pali {
  color: var(--ink-mute);
  font-family: var(--font-pi);
  font-size: 10.5px;
  font-style: italic;
}
.r-corpus-node { min-width: 0; }
.r-corpus-node__head {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr) auto;
  column-gap: 6px;
  row-gap: 1px;
  width: 100%;
  min-width: 0;
  padding: 7px var(--s4) 7px calc(34px + (var(--toc-depth, 0) * 14px));
  color: var(--ink-soft);
  text-align: left;
  border-left: 2px solid transparent;
}
.r-corpus-node__head:hover { background: var(--paper-deep); color: var(--ink); }
.r-corpus-node--depth-0 > .r-corpus-node__head {
  padding-top: 9px;
  padding-bottom: 9px;
  color: var(--ink);
  font-weight: 600;
  border-top: 1px solid var(--rule-soft);
}
.r-corpus-node--depth-0:first-child > .r-corpus-node__head { border-top: 0; }
.r-corpus-node__caret {
  grid-row: 1 / span 2;
  align-self: center;
  color: var(--ink-mute);
  transition: transform 120ms ease;
}
.r-corpus-node__head[aria-expanded="true"] .r-corpus-node__caret { transform: rotate(90deg); }
.r-corpus-node__label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
  line-height: 1.35;
}
.r-corpus-node__count {
  color: var(--ink-mute);
  font-family: var(--font-en);
  font-size: 9.5px;
  font-weight: 400;
  white-space: nowrap;
}
.r-corpus-node__pali {
  grid-column: 2 / -1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--ink-mute);
  font-family: var(--font-pi);
  font-size: 10.5px;
  font-style: italic;
  font-weight: 400;
}
.r-corpus-node__body {
  position: relative;
  min-width: 0;
}
.r-corpus-node__body::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(40px + (var(--toc-depth, 0) * 14px));
  border-left: 1px solid var(--rule-soft);
  pointer-events: none;
}
.r-corpus-filter {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 6px var(--s4) 9px 36px;
}
.r-corpus-filter input {
  width: 100%;
  min-width: 0;
  height: 32px;
  padding: 0 9px;
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  font-size: 11.5px;
  outline: none;
}
.r-corpus-filter input:focus { border-color: var(--ink-mute); }
.r-corpus-filter > span {
  color: var(--ink-mute);
  font-size: 10px;
}
.r-corpus-state {
  padding: 10px var(--s4) 10px 36px;
  color: var(--ink-mute);
  font-size: 11.5px;
  line-height: 1.55;
}
.r-corpus-state--error { color: #8a3a32; }
.r-corpus-more {
  width: calc(100% - 52px);
  margin: 8px var(--s4) 8px 36px;
  padding: 8px;
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 11px;
  text-align: center;
}
.r-corpus-more:hover { border-color: var(--rule); color: var(--ink); }

/* 관련·출처·메모 탭 */
.r-side-list { padding: var(--s3) var(--s4) var(--s8); }
.r-side-list__head {
  margin: var(--s4) 0 var(--s2);
  color: var(--ink-mute);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
}
.r-side-list__empty {
  padding: var(--s5) var(--s2);
  color: var(--ink-mute);
  font-size: 12px;
  line-height: 1.65;
  text-align: center;
}
.r-side-item {
  width: 100%;
  min-width: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--s2);
  padding: 9px 0;
  border-bottom: 1px solid var(--rule-faint);
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.45;
  text-align: left;
}
.r-side-item__main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-wrap: anywhere;
}
.r-side-item__kind {
  flex-shrink: 0;
  color: var(--ink-mute);
  font-size: 10px;
}
.r-side-item__num { font-family: var(--font-en); color: var(--ink-mute); }
.r-side-item__excerpt { color: var(--ink-mute); font-size: 11px; }
.r-side-item:not(.r-side-item--info):hover { color: var(--ink); }

/* ============================================================
   본문 영역
   ============================================================ */
.r-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* 본문 상단 컨트롤 바 */
.r-toolbar {
  position: sticky;
  top: 64px;
  z-index: 20;
  background: rgba(250, 246, 236, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule-soft);
  padding: 0 var(--s5);
  height: 56px;
  display: flex;
  align-items: center;
  gap: var(--s4);
}
.r-toolbar__crumb {
  display: flex;
  align-items: baseline;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
  gap: var(--s2);
  font-size: 12.5px;
  color: var(--ink-mute);
  min-width: 0;
  overflow: hidden;
}
.r-toolbar__crumb-sep { color: var(--ink-dim); }
.r-toolbar__crumb-now {
  color: var(--ink);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.r-toolbar__crumb .han { color: var(--ink-mute); }
.r-toolbar__crumb-now .han { color: var(--ink-soft); margin-left: 4px; }

.r-toolbar__spacer { flex: 1; }
.r-toolbar__progress {
  display: flex;
  align-items: center;
  gap: var(--s2);
  padding: 0 var(--s3);
}
.r-toolbar__progress-bar {
  width: 96px;
  height: 2px;
  background: var(--rule-soft);
  border-radius: 1px;
  overflow: hidden;
}
.r-toolbar__progress-fill { height: 100%; background: var(--ink); }
.r-toolbar__progress-text {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
}

/* 모드 스위처 */
.r-mode {
  display: inline-flex;
  background: var(--chrome);
  border: 1px solid var(--rule-soft);
  border-radius: 999px;
  padding: 2px;
  gap: 1px;
}
.r-mode__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-mute);
  border-radius: 999px;
  transition: background 120ms ease, color 120ms ease;
}
.r-mode__btn:hover { color: var(--ink); }
.r-mode__btn.is-active {
  background: var(--ink);
  color: var(--paper);
}

/* 본문 컬럼 */
.r-body {
  flex: 1;
  padding: var(--s8) var(--s5) var(--s9);
  overflow-y: auto;
}
.r-body__column {
  max-width: var(--read-w, var(--read-normal));
  margin: 0 auto;
  transition: max-width 200ms ease;
}
.reader[data-width="narrow"] { --read-w: var(--read-narrow); }
.reader[data-width="normal"] { --read-w: var(--read-normal); }
.reader[data-width="wide"]   { --read-w: var(--read-wide); }

/* 표제 (현재 경 / 권 / 품) */
.r-head {
  text-align: left;
  margin-bottom: var(--s7);
  padding-bottom: var(--s5);
  border-bottom: 1px solid var(--rule-soft);
}
.r-head__trail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px 7px;
  margin-bottom: var(--s4);
  color: var(--ink-mute);
  font-size: 11px;
  line-height: 1.45;
}
.r-head__trail-item {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  min-width: 0;
}
.r-head__trail-item strong {
  color: var(--ink-soft);
  font-weight: 500;
}
.r-head__trail-item em {
  overflow: hidden;
  max-width: 220px;
  color: var(--ink-mute);
  font-family: var(--font-pi);
  font-style: italic;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.r-head__trail-sep { color: var(--rule); }
.r-head__roman {
  font-family: var(--font-pi);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.32em;
  color: var(--c, var(--ink-mute));
  text-transform: uppercase;
  margin-bottom: var(--s4);
}
.r-head__han {
  font-family: var(--font-cn);
  font-size: 30px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--ink);
  margin-bottom: var(--s3);
}
.r-head__kr {
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  margin-bottom: var(--s4);
}
.r-head__skt {
  font-family: var(--font-pi);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
}
.r-head__meta {
  display: flex;
  gap: var(--s5);
  margin-top: var(--s5);
  font-family: var(--font-en);
  font-size: 10.5px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.r-head__meta-item { display: flex; gap: 6px; }
.r-head__meta-item strong { color: var(--ink); font-weight: 500; }

/* ============================================================
   본문 단락 — 가독성 최우선
   ============================================================ */
.r-passage {
  font-family: var(--font-body, var(--font-kr));
  font-size: var(--text-size, 19px);
  line-height: var(--text-lh, 1.85);
  color: var(--ink);
  letter-spacing: -0.005em;
  word-break: keep-all;
  text-wrap: pretty;
}
.reader[data-font="serif"] .r-passage { font-family: var(--font-kr-serif); letter-spacing: 0.01em; }

.r-paragraph {
  margin-bottom: 1.4em;
  position: relative;
  scroll-margin-top: 140px;
}
.r-paragraph[data-section]::before {
  content: attr(data-section);
  position: absolute;
  left: -56px;
  top: 0.45em;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--ink-dim);
}

/* 글뤼프 단락 끊기 */
.r-glyph {
  text-align: center;
  font-size: 1.2em;
  letter-spacing: 0.6em;
  color: var(--ink-dim);
  margin: 1.6em 0;
}

/* 원문 표시 (각 단락 머리 위 작은 한문/빨리/티벳 줄) */
.r-paragraph__source {
  display: block;
  font-family: var(--font-cn);
  font-size: 0.78em;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  padding: 0.6em 0 0.7em;
  margin-bottom: 0.4em;
  border-bottom: 1px dashed var(--rule-soft);
}
.r-paragraph__source.r-paragraph__source--pi {
  font-family: var(--font-pi);
  font-style: italic;
  font-size: 0.82em;
  letter-spacing: 0.005em;
}
.r-paragraph__source.r-paragraph__source--tib {
  font-family: var(--font-tib);
  font-size: 0.85em;
  letter-spacing: 0;
  line-height: 1.65;
}

/* 좌우 대조 모드 */
.reader[data-mode="parallel"] .r-passage {
  display: block;
  max-width: var(--read-parallel, var(--read-parallel-normal));
}
.reader[data-mode="parallel"][data-width="narrow"] .r-paragraph { --read-parallel: var(--read-parallel-narrow); }
.reader[data-mode="parallel"][data-width="normal"] .r-paragraph { --read-parallel: var(--read-parallel-normal); }
.reader[data-mode="parallel"][data-width="wide"]   .r-paragraph { --read-parallel: var(--read-parallel-wide); }
/* 대조 모드에서는 본문 컬럼 자체도 넓게 */
.reader[data-mode="parallel"] .r-body__column {
  max-width: var(--read-parallel, var(--read-parallel-normal));
}
.reader[data-mode="parallel"] .r-paragraph__source {
  border-bottom: 0;
  margin-bottom: 0;
  padding: 0;
  font-size: 1em;
  line-height: 1.85;
  color: var(--ink);
}
.reader[data-mode="parallel"] .r-paragraph {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  column-gap: clamp(28px, 4vw, 64px);
  align-items: start;
  margin: 0;
  padding: 1.1em 0 1.35em;
  border-bottom: 1px solid var(--rule-faint);
}
.reader[data-mode="parallel"] .r-paragraph > .r-paragraph__source { grid-column: 1; }
.reader[data-mode="parallel"] .r-paragraph > .r-paragraph__body { grid-column: 2; }
.reader[data-mode="parallel"] .r-paragraph > .r-paragraph__body,
.reader[data-mode="parallel"] .r-paragraph > .r-paragraph__source {
  min-width: 0;
  padding-bottom: 0;
  border-bottom: 0;
  margin-bottom: 0;
}

/* 원문만 모드 */
.reader[data-mode="original"] .r-paragraph__body { display: none; }
.reader[data-mode="original"] .r-paragraph__source {
  font-size: 1em;
  line-height: 1.95;
  border-bottom: 0;
  margin-bottom: 1.2em;
  padding: 0;
  color: var(--ink);
}

/* 번역만 모드 (디폴트) — 원문 숨김 */
.reader[data-mode="translation"] .r-paragraph__source { display: none; }

/* 행간 병기 — 단락 위 작게 */
.reader[data-mode="interlinear"] .r-paragraph__source {
  font-size: 0.72em;
  color: var(--ink-mute);
  border-bottom: 0;
  padding: 0;
  margin: 0 0 0.3em;
}

/* 원문 토글 OFF: 강제 숨김 */
.reader[data-show-original="false"] .r-paragraph__source { display: none; }

/* ============================================================
   각주
   ============================================================ */
.r-fn-marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: super;
  font-size: 0.55em;
  font-weight: 500;
  font-family: var(--font-en);
  color: var(--c-pali, var(--c, #1f3a3a));
  margin: 0 0.1em 0 0.05em;
  padding: 0 4px;
  height: 1.4em;
  border-radius: 999px;
  background: var(--rule-faint);
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
  letter-spacing: 0.04em;
  line-height: 1.4em;
}
.r-fn-marker:hover { background: var(--c, #1f3a3a); color: var(--paper); }

.r-footnotes {
  margin-top: var(--s8);
  padding-top: var(--s5);
  border-top: 1px solid var(--rule-soft);
}
.r-footnotes__title {
  font-family: var(--font-en);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: var(--s4);
}
.r-footnotes__list { display: flex; flex-direction: column; gap: var(--s3); }
.r-fn {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: var(--s2);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  scroll-margin-top: 140px;
}
.r-fn__num {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-mute);
  padding-top: 2px;
}
.r-fn__key {
  font-weight: 500;
  color: var(--ink);
  margin-right: 4px;
}
.r-fn:target {
  background: var(--hl-yellow);
  border-radius: 4px;
  padding: var(--s2);
  margin-left: -8px;
}

/* 각주 OFF */
.reader[data-show-fn="false"] .r-fn-marker { display: none; }
.reader[data-show-fn="false"] .r-footnotes { display: none; }

/* 각주 호버 풍선 */
.r-fn-pop {
  position: fixed;
  z-index: 200;
  max-width: 320px;
  background: var(--ink);
  color: var(--paper);
  padding: var(--s3) var(--s4);
  border-radius: 6px;
  font-size: 12.5px;
  line-height: 1.65;
  box-shadow: var(--sh-3);
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 120ms ease, transform 120ms ease;
}
.r-fn-pop.is-visible { opacity: 1; transform: translateY(0); }
.r-fn-pop .r-fn__key { color: var(--paper); font-weight: 600; }

/* ============================================================
   하이라이트 / 메모
   ============================================================ */
.r-highlight {
  background: var(--hl-yellow);
  border-radius: 2px;
  padding: 0.05em 0.05em;
  cursor: pointer;
  transition: background 120ms ease;
}
.r-highlight--blue   { background: var(--hl-blue); }
.r-highlight--green  { background: var(--hl-green); }
.r-highlight--pink   { background: var(--hl-pink); }
.r-highlight:hover { filter: brightness(0.95); }
.r-highlight[data-has-note]::after {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--ink);
  border-radius: 50%;
  margin: 0 4px 0 2px;
  vertical-align: middle;
}

/* 선택 메뉴 (텍스트 드래그 시) */
.r-select-menu {
  position: fixed;
  z-index: 300;
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 999px;
  box-shadow: var(--sh-3);
  transform: translate(-50%, -100%) translateY(-6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease;
}
.r-select-menu.is-visible { opacity: 1; pointer-events: auto; }
.r-select-menu__swatch {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1.5px solid rgba(250, 246, 236, 0.18);
}
.r-select-menu__btn {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--paper);
}
.r-select-menu__btn:hover { background: rgba(255,255,255,0.12); }
.r-select-menu__sep { width: 1px; height: 20px; background: rgba(255,255,255,0.15); margin: 0 2px; }

/* ============================================================
   우측 도구 레일
   ============================================================ */
.r-rail {
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  border-left: 1px solid var(--rule-soft);
  background: var(--chrome-soft);
  display: flex;
  flex-direction: column;
}
.r-rail__icons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s2);
  padding: var(--s4) 0;
  width: 64px;
  flex-shrink: 0;
}
.r-rail__divider {
  width: 24px;
  height: 1px;
  background: var(--rule-soft);
  margin: 4px 0;
}
.r-rail__panel {
  flex: 1;
  border-left: 1px solid var(--rule-soft);
  background: var(--chrome);
  overflow-y: auto;
  display: none;
}
.reader.is-tools-open .r-rail { width: auto; }
.reader.is-tools-open .r-rail { flex-direction: row; }
.reader.is-tools-open .r-rail__panel { display: block; }

.r-rail__panel-head {
  position: sticky;
  top: 0;
  background: var(--chrome);
  border-bottom: 1px solid var(--rule-soft);
  padding: var(--s4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 2;
}
.r-rail__panel-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.r-rail__panel-body { padding: var(--s4); }

/* ---- 설정 (Aa) 패널 ---- */
.r-settings { display: flex; flex-direction: column; gap: var(--s5); }
.r-settings__group {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
}
.r-settings__label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.04em;
}
.r-settings__label .val {
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
}

.r-seg {
  display: grid;
  grid-template-columns: repeat(var(--n, 2), 1fr);
  background: var(--chrome-soft);
  border: 1px solid var(--rule-soft);
  border-radius: 6px;
  overflow: hidden;
}
.r-seg__btn {
  padding: 8px 6px;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--ink-mute);
  border-right: 1px solid var(--rule-soft);
  transition: background 120ms ease, color 120ms ease;
}
.r-seg__btn:last-child { border-right: 0; }
.r-seg__btn:hover { background: var(--paper-soft); color: var(--ink); }
.r-seg__btn.is-active {
  background: var(--ink);
  color: var(--paper);
}
.r-seg__btn.is-active + .r-seg__btn { border-left: 0; }
.r-seg__btn-serif { font-family: var(--font-kr-serif); }
.r-seg__btn-sans  { font-family: var(--font-kr); }

.r-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  background: var(--rule-soft);
  border-radius: 1px;
  outline: none;
}
.r-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--ink);
  border-radius: 50%;
  cursor: pointer;
  border: 0;
}
.r-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--ink);
  border-radius: 50%;
  border: 0;
  cursor: pointer;
}

.r-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--s3) 0;
  border-bottom: 1px solid var(--rule-faint);
}
.r-toggle:last-child { border-bottom: 0; }
.r-toggle__label {
  font-size: 13px;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.r-toggle__sub {
  display: block;
  font-size: 11px;
  color: var(--ink-mute);
  margin-top: 2px;
  letter-spacing: 0.04em;
}
.r-switch {
  width: 36px;
  height: 20px;
  border-radius: 999px;
  background: var(--rule);
  position: relative;
  transition: background 120ms ease;
  flex-shrink: 0;
}
.r-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--paper-soft);
  transition: transform 120ms ease;
}
.r-switch.is-on { background: var(--ink); }
.r-switch.is-on::after { transform: translateX(16px); }

/* ---- 북마크 / 메모 리스트 ---- */
.r-list { display: flex; flex-direction: column; gap: var(--s3); }
.r-list__empty {
  text-align: center;
  padding: var(--s7) var(--s4);
  color: var(--ink-mute);
  font-size: 13px;
  line-height: 1.7;
}
.r-list__empty-icon {
  width: 32px;
  height: 32px;
  margin: 0 auto var(--s3);
  color: var(--ink-dim);
}
.r-item {
  background: var(--chrome-soft);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  padding: var(--s3);
  text-align: left;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color 120ms ease;
}
.r-item:hover { border-color: var(--rule); }
.r-item__loc {
  font-family: var(--font-en);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.r-item__excerpt {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ink-soft);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.r-item__time {
  font-family: var(--font-en);
  font-size: 10.5px;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
}

/* ---- 검색 ---- */
.r-search-input {
  width: 100%;
  height: 38px;
  padding: 0 var(--s3);
  background: var(--chrome-soft);
  border: 1px solid var(--rule-soft);
  border-radius: 6px;
  font-size: 14px;
  outline: none;
  transition: border-color 120ms ease;
}
.r-search-input:focus { border-color: var(--ink); }
.r-search-result {
  padding: var(--s3) 0;
  border-bottom: 1px solid var(--rule-faint);
  cursor: pointer;
}
.r-search-result:hover { background: var(--chrome-soft); margin: 0 -16px; padding: var(--s3) var(--s4); }
.r-search-result__loc {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  margin-bottom: 4px;
  font-family: var(--font-en);
}
.r-search-result__text {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
}
.r-search-result__text mark {
  background: var(--hl-yellow);
  color: var(--ink);
  padding: 0 1px;
}

/* ============================================================
   하단 페이지 네비 (이전/다음)
   ============================================================ */
.r-pager {
  display: flex;
  justify-content: space-between;
  gap: var(--s4);
  margin-top: var(--s9);
  padding-top: var(--s5);
  border-top: 1px solid var(--rule-soft);
}
.r-pager__btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--s4);
  background: var(--chrome);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  text-align: left;
  transition: border-color 120ms ease, background 120ms ease;
}
.r-pager__btn--next { text-align: right; }
.r-pager__btn:hover { border-color: var(--rule); }
.r-pager__btn-label {
  font-family: var(--font-en);
  font-size: 10.5px;
  letter-spacing: 0.32em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.r-pager__btn-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}
.r-pager__btn-title .han {
  font-family: var(--font-cn);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  margin-right: 6px;
}