.research-entry {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 88px;
  margin: 0;
  padding: 11px 13px;
  overflow: hidden;
  border: 1px solid rgba(153, 159, 244, 0.3);
  border-radius: 16px;
  color: #f3f1ff;
  background:
    radial-gradient(circle at 12% 35%, rgba(129, 190, 255, 0.14), transparent 34%),
    linear-gradient(110deg, rgba(39, 47, 92, 0.96), rgba(27, 25, 62, 0.98));
  box-shadow: 0 11px 26px rgba(2, 7, 19, 0.24), inset 0 1px rgba(255, 255, 255, 0.07);
  text-align: left;
  transition: border-color 160ms ease, transform 120ms ease, box-shadow 160ms ease;
}

.research-entry::after {
  position: absolute;
  top: -30px;
  right: 14%;
  width: 94px;
  height: 94px;
  border: 1px solid rgba(184, 180, 255, 0.08);
  border-radius: 50%;
  box-shadow: 0 0 0 14px rgba(134, 203, 255, 0.025), 0 0 0 29px rgba(184, 180, 255, 0.018);
  content: "";
  pointer-events: none;
}

.research-entry:hover,
.research-entry:focus-visible {
  border-color: rgba(169, 181, 255, 0.55);
  box-shadow: 0 13px 30px rgba(15, 22, 65, 0.32), inset 0 1px rgba(255, 255, 255, 0.09);
}

.research-entry:active {
  transform: scale(0.985);
}

.research-entry-icon {
  position: relative;
  display: grid;
  width: 42px;
  height: 48px;
  place-items: center;
  border: 1px solid rgba(174, 179, 255, 0.4);
  border-radius: 8px 11px 11px 8px;
  background: linear-gradient(145deg, rgba(145, 189, 255, 0.14), rgba(111, 91, 179, 0.11));
  box-shadow: inset 4px 0 rgba(194, 211, 255, 0.08), inset 0 0 13px rgba(146, 197, 255, 0.08);
}

.research-entry-icon::before,
.research-entry-icon::after {
  position: absolute;
  left: 9px;
  width: 21px;
  height: 1px;
  background: rgba(210, 219, 255, 0.36);
  box-shadow: 0 6px rgba(210, 219, 255, 0.23), 0 12px rgba(210, 219, 255, 0.16);
  content: "";
}

.research-entry-icon::before { top: 14px; }
.research-entry-icon::after { top: 36px; width: 12px; box-shadow: none; }

.research-entry-icon i {
  position: absolute;
  top: 0;
  left: 5px;
  width: 1px;
  height: 100%;
  background: rgba(225, 226, 255, 0.22);
}

.research-entry-icon b {
  position: absolute;
  top: 5px;
  right: 5px;
  color: #b9d8ff;
  font-size: 0.58rem;
  text-shadow: 0 0 9px rgba(157, 194, 255, 0.7);
}

.research-entry-copy {
  position: relative;
  z-index: 1;
  display: grid;
  min-width: 0;
  gap: 2px;
}

.research-entry-copy small {
  color: #aeb9ff;
  font: 700 0.53rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.16em;
}

.research-entry-copy strong {
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 0.96rem;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.research-entry-copy span {
  overflow: hidden;
  color: #aeb5d0;
  font-size: 0.62rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.research-entry-arrow {
  position: relative;
  z-index: 1;
  color: #abb8ff;
  font-size: 1rem;
}

.hall-subhub-list .research-entry {
  min-height: 88px;
}

.research-notebook-view,
.research-notebook-view * {
  box-sizing: border-box;
}

.research-notebook-view[hidden],
.rn-search-layer[hidden],
.rn-editor-layer[hidden],
.rn-reader-layer[hidden],
.rn-note-page[hidden],
.rn-empty-page[hidden],
.rn-read-full[hidden],
.rn-selection-dock[hidden],
.rn-search-clear[hidden],
.rn-search-summary[hidden],
.rn-search-results[hidden],
.rn-search-empty[hidden] {
  display: none !important;
}

.research-notebook-view {
  --rn-night: #070a1a;
  --rn-leather: #11173c;
  --rn-leather-light: #202957;
  --rn-violet: #958de2;
  --rn-blue: #91c5f6;
  --rn-paper: #e8e8f2;
  --rn-paper-deep: #d7d8e8;
  --rn-ink: #252b50;
  --rn-muted-ink: #646985;
  position: fixed;
  inset: 0;
  z-index: 125;
  isolation: isolate;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  color: #f3f3ff;
  background:
    radial-gradient(circle at 18% 0%, rgba(86, 133, 220, 0.2), transparent 31%),
    radial-gradient(circle at 92% 20%, rgba(142, 93, 199, 0.16), transparent 34%),
    linear-gradient(158deg, #11183a 0%, #090d22 52%, #070916 100%);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  scrollbar-color: rgba(155, 174, 239, 0.46) transparent;
  scrollbar-width: thin;
}

.research-notebook-view.rn-search-open,
.research-notebook-view.rn-reader-open { overflow: hidden; }

.research-notebook-view::before,
.research-notebook-view::after {
  position: fixed;
  z-index: -2;
  content: "";
  pointer-events: none;
}

.research-notebook-view::before {
  inset: 0;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(198, 214, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(198, 214, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 88%);
  -webkit-mask-image: linear-gradient(to bottom, black, transparent 88%);
}

.research-notebook-view::after {
  top: 9%;
  right: -130px;
  width: 340px;
  height: 340px;
  border: 1px solid rgba(185, 191, 255, 0.07);
  border-radius: 50%;
  box-shadow: 0 0 0 42px rgba(185, 191, 255, 0.018), 0 0 0 96px rgba(185, 191, 255, 0.012);
}

.rn-night-sky {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.rn-night-sky i {
  position: absolute;
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: #dfeaff;
  box-shadow: 0 0 8px rgba(178, 206, 255, 0.9);
  animation: rnStarBreath 4.8s ease-in-out infinite alternate;
}

.rn-night-sky i:nth-child(1) { top: 10%; left: 8%; animation-delay: -1s; }
.rn-night-sky i:nth-child(2) { top: 18%; left: 72%; width: 3px; height: 3px; animation-delay: -3s; }
.rn-night-sky i:nth-child(3) { top: 44%; left: 94%; animation-delay: -2s; }
.rn-night-sky i:nth-child(4) { top: 68%; left: 5%; width: 3px; height: 3px; animation-delay: -4s; }
.rn-night-sky i:nth-child(5) { top: 84%; left: 81%; animation-delay: -0.7s; }
.rn-night-sky i:nth-child(6) { top: 56%; left: 48%; animation-delay: -3.8s; }

.rn-shell {
  width: min(100%, 980px);
  min-height: 100svh;
  margin: 0 auto;
  padding: calc(18px + env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) calc(32px + env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
}

.rn-topbar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
}

.rn-back-button,
.rn-new-button {
  min-height: 42px;
  border: 1px solid rgba(169, 193, 241, 0.22);
  border-radius: 999px;
  color: #dce7ff;
  background: rgba(13, 19, 49, 0.74);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.06);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: border-color 160ms ease, transform 100ms ease, background 160ms ease;
}

.rn-back-button { padding: 9px 15px; }

.rn-new-button {
  padding: 9px 16px;
  border-color: rgba(167, 161, 241, 0.36);
  background: linear-gradient(135deg, rgba(84, 88, 157, 0.65), rgba(65, 50, 125, 0.64));
}

.rn-new-button span {
  margin-right: 4px;
  color: #c6ddff;
  font-size: 1rem;
}

.rn-back-button:hover,
.rn-new-button:hover,
.rn-back-button:focus-visible,
.rn-new-button:focus-visible {
  border-color: rgba(177, 202, 255, 0.55);
}

.rn-back-button:active,
.rn-new-button:active { transform: scale(0.97); }

.rn-heading { text-align: center; }

.rn-heading p {
  margin: 0 0 3px;
  color: #9eade1;
  font: 700 0.56rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.18em;
}

.rn-heading h1 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.5rem, 4vw, 2.05rem);
  font-weight: 500;
  letter-spacing: 0.16em;
}

.rn-constellation-rule {
  display: grid;
  grid-template-columns: auto minmax(30px, 120px) auto minmax(30px, 120px) auto;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: min(100%, 390px);
  margin: 14px auto 16px;
  color: #c0c8ff;
}

.rn-constellation-rule i {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(183, 194, 255, 0.48), transparent);
}

.rn-constellation-rule b {
  font-family: Georgia, serif;
  font-size: 1rem;
  font-weight: 400;
  text-shadow: 0 0 12px rgba(170, 178, 255, 0.6);
}

.rn-constellation-rule span { font-size: 0.55rem; }

.rn-book-stage {
  position: relative;
  width: min(100%, 850px);
  min-height: min(700px, calc(100svh - 170px));
  margin: 0 auto;
  padding: 15px 56px 15px 15px;
  border: 1px solid rgba(141, 151, 231, 0.3);
  border-radius: 25px;
  background:
    linear-gradient(90deg, rgba(31, 37, 82, 0.97), rgba(16, 21, 57, 0.98) 16%, rgba(27, 31, 73, 0.98)),
    var(--rn-leather);
  box-shadow:
    0 28px 70px rgba(1, 3, 14, 0.56),
    inset 0 1px rgba(255, 255, 255, 0.08),
    inset 0 0 42px rgba(112, 95, 183, 0.1);
  perspective: 1500px;
  perspective-origin: left center;
  -webkit-perspective: 1500px;
  -webkit-perspective-origin: left center;
}

.rn-book-stage::before,
.rn-book-stage::after {
  position: absolute;
  z-index: 4;
  right: 63px;
  left: 29px;
  height: 1px;
  content: "";
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(206, 210, 255, 0.34), transparent);
}

.rn-book-stage::before { top: 8px; }
.rn-book-stage::after { bottom: 8px; }

.rn-category-tabs {
  position: absolute;
  top: 28px;
  right: 0;
  bottom: 28px;
  z-index: 6;
  display: flex;
  width: 55px;
  flex-direction: column;
  align-items: flex-end;
  gap: 7px;
  padding: 3px 0 7px 8px;
  overflow-x: visible;
  overflow-y: auto;
  scrollbar-width: none;
  touch-action: pan-y;
}

.rn-category-tabs::-webkit-scrollbar { display: none; }

.rn-category-tab {
  --rn-tab-a: #48518f;
  --rn-tab-b: #252b62;
  --rn-tab-line: rgba(181, 193, 255, 0.48);
  --rn-tab-glow: rgba(125, 143, 233, 0.3);
  position: relative;
  display: grid;
  width: 47px;
  min-height: 58px;
  flex: 0 0 auto;
  align-content: center;
  justify-items: center;
  gap: 5px;
  padding: 7px 3px 6px;
  border: 1px solid var(--rn-tab-line);
  border-left: 0;
  border-radius: 0 10px 10px 0;
  color: #edf0ff;
  background:
    radial-gradient(circle at 22% 20%, rgba(255, 255, 255, 0.15), transparent 34%),
    linear-gradient(145deg, var(--rn-tab-a), var(--rn-tab-b));
  box-shadow: 5px 6px 13px rgba(1, 3, 16, 0.28), inset 0 1px rgba(255, 255, 255, 0.12);
  transition: transform 150ms ease, filter 150ms ease, box-shadow 150ms ease;
}

.rn-category-tab::after {
  position: absolute;
  top: 9px;
  left: 7px;
  width: 3px;
  height: 3px;
  border: 1px solid rgba(237, 240, 255, 0.68);
  content: "";
  transform: rotate(45deg);
}

.rn-category-tab b {
  max-width: 100%;
  overflow: hidden;
  font: 800 0.64rem/1.15 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.08em;
  text-overflow: clip;
  white-space: nowrap;
}

.rn-category-tab small {
  color: rgba(233, 238, 255, 0.74);
  font: 700 0.44rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.08em;
}

.rn-category-tab[aria-selected="true"] {
  filter: brightness(1.13);
  box-shadow: 7px 7px 17px rgba(1, 3, 16, 0.36), 0 0 18px var(--rn-tab-glow), inset 0 1px rgba(255, 255, 255, 0.18);
  transform: translateX(-6px);
}

.rn-category-tab:focus-visible {
  outline: 2px solid rgba(218, 228, 255, 0.86);
  outline-offset: -3px;
}

.rn-category-tab:active { transform: translateX(-4px) scale(0.96); }

.rn-category-tone-all {
  --rn-tab-a: #48518f;
  --rn-tab-b: #252b62;
  --rn-tab-line: rgba(181, 193, 255, 0.48);
  --rn-tab-glow: rgba(125, 143, 233, 0.3);
}

.rn-category-tone-gradient {
  --rn-tab-a: hsl(var(--rn-tab-hue) 32% 35%);
  --rn-tab-b: hsl(var(--rn-tab-hue) 38% 22%);
  --rn-tab-line: hsl(var(--rn-tab-hue) 68% 78% / 0.5);
  --rn-tab-glow: hsl(var(--rn-tab-hue) 62% 60% / 0.28);
}

.rn-paper {
  position: relative;
  display: flex;
  min-height: min(670px, calc(100svh - 200px));
  flex-direction: column;
  padding: 28px clamp(22px, 5vw, 54px) 20px;
  overflow: hidden;
  border: 1px solid rgba(231, 233, 250, 0.72);
  border-radius: 5px 14px 14px 5px;
  outline: none;
  color: var(--rn-ink);
  background:
    radial-gradient(circle at 88% 8%, rgba(125, 131, 190, 0.12), transparent 27%),
    repeating-linear-gradient(0deg, rgba(58, 64, 113, 0.018) 0, rgba(58, 64, 113, 0.018) 1px, transparent 1px, transparent 5px),
    linear-gradient(116deg, #dfe0ec 0%, #eff0f5 33%, #e7e7f0 100%);
  box-shadow:
    7px 0 0 rgba(186, 187, 197, 0.9),
    8px 0 0 rgba(160, 163, 180, 0.62),
    inset 12px 0 24px rgba(57, 61, 111, 0.1),
    inset 0 0 40px rgba(71, 73, 116, 0.07),
    8px 9px 22px rgba(0, 0, 0, 0.3);
  touch-action: pan-y;
}

.rn-paper[aria-busy="true"] { pointer-events: none; }

.rn-paper:focus-visible {
  box-shadow:
    7px 0 0 rgba(186, 187, 197, 0.9),
    8px 0 0 rgba(160, 163, 180, 0.62),
    inset 12px 0 24px rgba(57, 61, 111, 0.1),
    inset 0 0 40px rgba(71, 73, 116, 0.07),
    0 0 0 3px rgba(152, 184, 255, 0.3),
    8px 9px 22px rgba(0, 0, 0, 0.3);
}

.rn-paper::before {
  position: absolute;
  inset: 15px;
  border: 1px solid rgba(64, 70, 124, 0.18);
  border-radius: 2px 10px 10px 2px;
  content: "";
  pointer-events: none;
}

.rn-paper::after {
  position: absolute;
  top: 21px;
  right: 23px;
  width: 8px;
  height: 8px;
  border: 1px solid rgba(68, 73, 127, 0.43);
  content: "";
  pointer-events: none;
  transform: rotate(45deg);
}

.rn-paper.is-category-entering > .rn-page-header,
.rn-paper.is-category-entering > .rn-empty-page > *,
.rn-paper.is-category-entering > .rn-note-page > *,
.rn-paper.is-category-entering > .rn-page-navigation {
  animation: rnCategoryItemAppear 500ms cubic-bezier(0.22, 0.8, 0.25, 1) both;
  will-change: opacity, translate;
}

.rn-paper.is-category-entering > .rn-page-header { animation-delay: 0ms; }
.rn-paper.is-category-entering > .rn-empty-page > :nth-child(1),
.rn-paper.is-category-entering > .rn-note-page > :nth-child(1) { animation-delay: 50ms; }
.rn-paper.is-category-entering > .rn-empty-page > :nth-child(2),
.rn-paper.is-category-entering > .rn-note-page > :nth-child(2) { animation-delay: 100ms; }
.rn-paper.is-category-entering > .rn-empty-page > :nth-child(3),
.rn-paper.is-category-entering > .rn-note-page > :nth-child(3) { animation-delay: 150ms; }
.rn-paper.is-category-entering > .rn-empty-page > :nth-child(4),
.rn-paper.is-category-entering > .rn-note-page > :nth-child(4) { animation-delay: 200ms; }
.rn-paper.is-category-entering > .rn-empty-page > :nth-child(5),
.rn-paper.is-category-entering > .rn-note-page > :nth-child(5) { animation-delay: 250ms; }
.rn-paper.is-category-entering > .rn-note-page > :nth-child(6) { animation-delay: 300ms; }
.rn-paper.is-category-entering > .rn-page-navigation { animation-delay: 350ms; }

.rn-page-turn-sheet {
  position: absolute;
  z-index: 5;
  min-height: 0;
  margin: 0;
  pointer-events: none;
  /* The live page keeps the fixed 7px/8px page-depth layers underneath. */
  box-shadow:
    inset 12px 0 24px rgba(57, 61, 111, 0.1),
    inset 0 0 40px rgba(71, 73, 116, 0.07);
  transform-origin: left center;
  transform: translate3d(0, 0, 0) rotateY(0deg);
  transform-style: preserve-3d;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  will-change: opacity, transform;
  contain: layout paint style;
}

.rn-page-turn-sheet.rn-page-turn-underlay { z-index: 4; }

.rn-page-turn-sheet.is-turning-next {
  opacity: 1;
  transform: translate3d(0, 0, 0) rotateY(0deg);
}

.rn-page-turn-sheet.is-turning-previous {
  opacity: 0;
  transform: translate3d(-9px, 0, 0) rotateY(-89deg);
}

.rn-page-turn-sheet.is-turning-next.is-page-turn-active {
  animation: rnPageTurnNext 360ms cubic-bezier(0.2, 0.65, 0.25, 1) both;
}

.rn-page-turn-sheet.is-turning-previous.is-page-turn-active {
  animation: rnPageTurnPrevious 360ms cubic-bezier(0.2, 0.65, 0.25, 1) both;
}

.rn-page-fold-shade {
  position: absolute;
  z-index: 10;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  background: linear-gradient(
    90deg,
    rgba(72, 77, 128, 0.12),
    transparent 24%,
    transparent 62%,
    rgba(91, 96, 147, 0.18) 82%,
    rgba(255, 255, 255, 0.5) 96%,
    rgba(72, 77, 128, 0.2)
  );
}

.rn-page-turn-sheet.is-turning-next.is-page-turn-active > .rn-page-fold-shade {
  animation: rnPageFoldShadeNext 360ms ease-in both;
}

.rn-page-turn-sheet.is-turning-previous.is-page-turn-active > .rn-page-fold-shade {
  animation: rnPageFoldShadePrevious 360ms ease-out both;
}

.rn-paper-corner {
  position: absolute;
  z-index: 1;
  width: 34px;
  height: 34px;
  pointer-events: none;
}

.rn-paper-corner::before,
.rn-paper-corner::after {
  position: absolute;
  content: "";
  background: rgba(74, 80, 138, 0.27);
}

.rn-paper-corner::before { width: 30px; height: 1px; }
.rn-paper-corner::after { width: 1px; height: 30px; }
.rn-paper-corner-a { top: 15px; left: 15px; }
.rn-paper-corner-b { right: 15px; bottom: 15px; transform: rotate(180deg); }

.rn-page-header {
  position: relative;
  z-index: 2;
  display: flex;
  flex: 0 0 auto;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  padding: 0 3px 13px;
  border-bottom: 1px solid rgba(65, 71, 125, 0.22);
}

.rn-page-heading {
  display: grid;
  min-width: 0;
  gap: 4px;
}

.rn-page-kicker,
.rn-page-number {
  color: #656d9f;
  font: 800 0.59rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.18em;
}

.rn-page-number {
  flex: 0 0 auto;
  padding-top: 2px;
  letter-spacing: 0.1em;
}

.rn-current-category {
  overflow: hidden;
  color: #747ba3;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rn-empty-page {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 0;
  flex: 1;
  align-content: center;
  justify-items: center;
  padding: 40px 20px;
  text-align: center;
}

.rn-empty-orbit {
  position: relative;
  display: grid;
  width: 78px;
  height: 78px;
  margin-bottom: 22px;
  place-items: center;
  border: 1px solid rgba(80, 88, 149, 0.35);
  border-radius: 50%;
  box-shadow: 0 0 0 9px rgba(88, 98, 163, 0.06), 0 0 26px rgba(104, 109, 179, 0.08);
}

.rn-empty-orbit::before {
  position: absolute;
  inset: 12px -8px;
  border: 1px solid rgba(80, 88, 149, 0.25);
  border-radius: 50%;
  content: "";
  transform: rotate(-31deg);
}

.rn-empty-orbit span { color: #656da5; font-size: 1.5rem; }

.rn-empty-page > p {
  margin: 0 0 8px;
  color: #747aa6;
  font: 800 0.58rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.2em;
}

.rn-empty-page h2 {
  margin: 0 0 12px;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.35rem, 4.5vw, 1.8rem);
  font-weight: 500;
  letter-spacing: 0.08em;
}

.rn-empty-page > span {
  color: var(--rn-muted-ink);
  font-size: 0.76rem;
  line-height: 1.9;
}

.rn-empty-page button {
  min-height: 42px;
  margin-top: 25px;
  padding: 9px 20px;
  border: 1px solid rgba(69, 78, 139, 0.35);
  border-radius: 999px;
  color: #f4f5ff;
  background: linear-gradient(135deg, #515a91, #3a3c72);
  box-shadow: 0 8px 18px rgba(39, 43, 87, 0.2);
  font-size: 0.74rem;
  font-weight: 800;
}

.rn-note-page {
  --rn-observation-lines: 5;
  --rn-countermeasure-lines: 4;
  position: relative;
  z-index: 2;
  display: flex;
  flex: 1;
  min-height: 0;
  flex-direction: column;
  padding: 17px 3px 15px;
  overflow: hidden;
}

.rn-note-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.rn-note-toolbar button {
  min-height: 34px;
  padding: 6px 11px;
  border: 1px solid rgba(70, 76, 132, 0.22);
  border-radius: 999px;
  color: #515878;
  background: rgba(255, 255, 255, 0.25);
  font-size: 0.66rem;
  font-weight: 700;
}

.rn-note-toolbar-primary,
.rn-note-toolbar-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 6px;
}

.rn-note-toolbar .rn-search-button {
  display: grid;
  width: 34px;
  min-width: 34px;
  padding: 0;
  place-items: center;
  border-color: rgba(76, 83, 145, 0.28);
  color: #4d557f;
  background: rgba(113, 122, 188, 0.11);
}

.rn-search-button svg,
.rn-search-form svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.8;
}

.rn-search-button svg {
  width: 16px;
  height: 16px;
}
.rn-note-toolbar .rn-read-full {
  border-color: rgba(79, 89, 157, 0.32);
  color: #46527d;
  background: rgba(109, 126, 194, 0.13);
}
.rn-note-toolbar #researchNotebookDeleteButton { color: #9a5269; }

.rn-select-note {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.rn-select-note i {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 1px solid rgba(65, 72, 128, 0.48);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.3);
}

.rn-select-note[aria-pressed="true"] {
  border-color: rgba(75, 81, 145, 0.46);
  color: #30375f;
  background: rgba(112, 120, 186, 0.15);
}

.rn-select-note[aria-pressed="true"] i {
  position: relative;
  border-color: #5d659d;
  background: #636ba5;
}

.rn-select-note[aria-pressed="true"] i::after {
  position: absolute;
  top: 1px;
  left: 3px;
  width: 5px;
  height: 8px;
  border-right: 2px solid #fff;
  border-bottom: 2px solid #fff;
  content: "";
  transform: rotate(42deg);
}

.rn-note-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin: 18px 0 20px;
}

.rn-note-meta > div {
  min-width: 0;
  padding: 9px 10px;
  border: 1px solid rgba(70, 77, 134, 0.17);
  border-radius: 8px;
  background: rgba(93, 101, 164, 0.055);
}

.rn-note-meta dt {
  margin-bottom: 4px;
  color: #777da7;
  font: 800 0.5rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.13em;
}

.rn-note-meta dd {
  overflow: hidden;
  margin: 0;
  color: #343a62;
  font-size: 0.68rem;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rn-note-title-block {
  display: grid;
  grid-template-columns: minmax(16px, 1fr) auto minmax(16px, 1fr);
  align-items: center;
  gap: 12px;
  margin: 0 0 20px;
  text-align: center;
}

.rn-note-title-block::before,
.rn-note-title-block::after {
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(70, 76, 133, 0.32));
}

.rn-note-title-block::after { transform: rotate(180deg); }

.rn-note-title-block span {
  display: none;
  color: #737aa9;
}

.rn-note-title-block h2 {
  min-width: 0;
  max-width: 520px;
  margin: 0;
  overflow: hidden;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.25rem, 4vw, 1.85rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rn-note-section {
  margin-bottom: 15px;
  padding: 15px 17px 17px;
  border: 1px solid rgba(70, 76, 133, 0.16);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.2);
}

.rn-note-section h3 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 9px;
  color: #4e557e;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
}

.rn-note-section h3 span {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border: 1px solid rgba(75, 82, 141, 0.3);
  border-radius: 50%;
  color: #68709d;
  font: 800 0.49rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.rn-note-section p {
  display: -webkit-box;
  overflow: hidden;
  margin: 0;
  color: #333958;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 0.86rem;
  line-height: 1.9;
  -webkit-box-orient: vertical;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.rn-note-observation p { -webkit-line-clamp: var(--rn-observation-lines); }
.rn-note-countermeasure p { -webkit-line-clamp: var(--rn-countermeasure-lines); }

.rn-note-countermeasure {
  background: linear-gradient(135deg, rgba(116, 127, 196, 0.09), rgba(255, 255, 255, 0.19));
}

.rn-page-navigation {
  position: relative;
  z-index: 3;
  display: grid;
  flex: 0 0 auto;
  grid-template-columns: 42px minmax(0, 1fr) 42px;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(65, 71, 125, 0.18);
}

.rn-page-navigation button {
  display: grid;
  width: 42px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(67, 74, 132, 0.26);
  border-radius: 999px;
  color: #505988;
  background: rgba(255, 255, 255, 0.26);
  font-size: 1rem;
}

.rn-page-navigation button:disabled {
  opacity: 0.25;
  cursor: default;
}

.rn-page-navigation span {
  color: #777c9b;
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  text-align: center;
}

.rn-selection-dock {
  position: sticky;
  z-index: 8;
  bottom: calc(14px + env(safe-area-inset-bottom));
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 9px;
  width: min(calc(100% - 30px), 610px);
  margin: -4px auto 0;
  padding: 10px 12px 10px 16px;
  border: 1px solid rgba(175, 184, 255, 0.32);
  border-radius: 999px;
  color: #e9edff;
  background: rgba(19, 24, 61, 0.94);
  box-shadow: 0 14px 34px rgba(1, 4, 20, 0.45), inset 0 1px rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.rn-selection-dock > span { font-size: 0.69rem; white-space: nowrap; }
.rn-selection-dock b { color: #bdc9ff; }

.rn-selection-dock button {
  min-height: 34px;
  padding: 6px 12px;
  border: 1px solid rgba(175, 184, 255, 0.2);
  border-radius: 999px;
  color: #d9dfff;
  background: rgba(255, 255, 255, 0.055);
  font-size: 0.65rem;
  font-weight: 700;
  white-space: nowrap;
}

.rn-selection-dock #researchNotebookCopyButton {
  color: #171a3a;
  background: linear-gradient(135deg, #d4ddff, #aaa8e9);
}

.rn-status {
  min-height: 1.2em;
  margin: 12px 0 0;
  color: #aab9ec;
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  text-align: center;
}

.rn-search-layer {
  position: fixed;
  inset: 0;
  z-index: 146;
  display: grid;
  align-items: end;
  padding: 16px max(16px, env(safe-area-inset-right)) calc(16px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}

.rn-search-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 5, 17, 0.82);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
}

.rn-search-panel {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr);
  width: min(100%, 680px);
  height: min(720px, calc(100dvh - 32px - env(safe-area-inset-bottom)));
  max-height: calc(100dvh - 32px - env(safe-area-inset-bottom));
  margin: 0 auto;
  padding: 23px;
  overflow: hidden;
  border: 1px solid rgba(231, 233, 250, 0.72);
  border-radius: 25px;
  color: var(--rn-ink);
  background:
    radial-gradient(circle at 89% 7%, rgba(167, 105, 178, 0.12), transparent 25%),
    radial-gradient(circle at 8% 2%, rgba(99, 139, 188, 0.11), transparent 28%),
    repeating-linear-gradient(0deg, rgba(58, 64, 113, 0.018) 0, rgba(58, 64, 113, 0.018) 1px, transparent 1px, transparent 5px),
    linear-gradient(116deg, #dfe0ec 0%, #f0f0f5 34%, #e7e6f0 100%);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.64), inset 12px 0 24px rgba(57, 61, 111, 0.08);
  animation: rnEditorRise 280ms cubic-bezier(0.22, 1, 0.36, 1);
}

.rn-search-panel > header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(65, 71, 125, 0.2);
}

.rn-search-panel > header p {
  margin: 0 0 5px;
  color: #6b739e;
  font: 800 0.55rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.17em;
}

.rn-search-panel > header h2 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.25rem, 5vw, 1.65rem);
  font-weight: 500;
  letter-spacing: 0.06em;
}

#researchNotebookSearchCloseButton {
  position: relative;
  display: grid;
  width: 39px;
  height: 39px;
  flex: 0 0 auto;
  padding: 0;
  place-items: center;
  border: 1px solid rgba(74, 82, 139, 0.26);
  border-radius: 50%;
  color: #505780;
  background: rgba(255, 255, 255, 0.28);
  font-size: 0;
  -webkit-appearance: none;
  appearance: none;
}

.rn-search-form {
  margin-top: 14px;
}

.rn-search-form > label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  min-height: 47px;
  padding: 4px 5px 4px 13px;
  border: 1px solid rgba(74, 82, 139, 0.25);
  border-radius: 14px;
  color: #61698f;
  background: rgba(255, 255, 255, 0.38);
  box-shadow: inset 0 1px 8px rgba(47, 53, 99, 0.055);
}

.rn-search-form > label:focus-within {
  border-color: rgba(93, 103, 170, 0.5);
  box-shadow: 0 0 0 3px rgba(109, 120, 190, 0.11), inset 0 1px 8px rgba(47, 53, 99, 0.055);
}

.rn-search-form svg {
  width: 18px;
  height: 18px;
}

.rn-search-form input {
  width: 100%;
  min-width: 0;
  height: 37px;
  padding: 0 10px;
  border: 0;
  border-radius: 0;
  outline: 0;
  color: #2d345c;
  background: transparent;
  font: 700 0.78rem/1.4 "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  -webkit-appearance: none;
  appearance: none;
}

.rn-search-form input::-webkit-search-cancel-button { display: none; }
.rn-search-form input::placeholder { color: #8a90aa; }

#researchNotebookSearchClearButton {
  position: relative;
  display: grid;
  width: 31px;
  height: 31px;
  padding: 0;
  place-items: center;
  border: 0;
  border-radius: 50%;
  color: #62698d;
  background: rgba(80, 89, 145, 0.09);
  font-size: 0;
  -webkit-appearance: none;
  appearance: none;
}

#researchNotebookSearchCloseButton::before,
#researchNotebookSearchCloseButton::after,
#researchNotebookSearchClearButton::before,
#researchNotebookSearchClearButton::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--rn-search-x-size, 12px);
  height: 1.5px;
  border-radius: 999px;
  background: currentColor;
  content: "";
  transform-origin: center;
}

#researchNotebookSearchCloseButton::before,
#researchNotebookSearchClearButton::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

#researchNotebookSearchCloseButton::after,
#researchNotebookSearchClearButton::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

#researchNotebookSearchClearButton {
  --rn-search-x-size: 9px;
}

.rn-search-form > p {
  margin: 7px 3px 0;
  color: #747b9a;
  font-size: 0.59rem;
  line-height: 1.55;
}

.rn-search-summary {
  margin: 13px 3px 8px;
  color: #5c648d;
  font: 800 0.61rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.05em;
}

.rn-search-results,
.rn-search-empty {
  min-height: 0;
  grid-row: 4;
}

.rn-search-results {
  margin: 0;
  padding: 0 4px 4px 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  list-style: none;
  scrollbar-color: rgba(88, 98, 163, 0.4) transparent;
  scrollbar-width: thin;
}

.rn-search-results li + li { margin-top: 8px; }

.rn-search-results button {
  position: relative;
  display: grid;
  width: 100%;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 5px 12px;
  padding: 12px 41px 12px 14px;
  overflow: hidden;
  border: 1px solid rgba(70, 77, 134, 0.17);
  border-radius: 12px;
  color: #30375f;
  background: rgba(255, 255, 255, 0.28);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.35);
  text-align: left;
}

.rn-search-results button:active { transform: scale(0.99); }
.rn-search-results button:focus-visible {
  outline: 3px solid rgba(93, 104, 176, 0.24);
  outline-offset: 1px;
}

.rn-search-result-meta {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: #6f769c;
  font: 800 0.55rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.04em;
}

.rn-search-result-meta b {
  max-width: 60%;
  padding: 3px 7px;
  overflow: hidden;
  border: 1px solid rgba(88, 96, 158, 0.17);
  border-radius: 999px;
  color: #555e8b;
  background: rgba(100, 110, 177, 0.08);
  font: inherit;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rn-search-results strong {
  display: block;
  grid-column: 1 / -1;
  overflow: hidden;
  color: #293052;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.035em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rn-search-result-snippet {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 7px;
  min-width: 0;
  color: #525977;
  font-size: 0.67rem;
  line-height: 1.65;
}

.rn-search-result-snippet small {
  margin-top: 1px;
  padding: 2px 5px;
  border-radius: 4px;
  color: #68719d;
  background: rgba(92, 103, 171, 0.09);
  font-size: 0.49rem;
  font-weight: 800;
  white-space: nowrap;
}

.rn-search-result-snippet > span {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow-wrap: anywhere;
}

.rn-search-result-snippet mark {
  padding: 0 0.08em;
  border-radius: 3px;
  color: #472d56;
  background: linear-gradient(transparent 12%, rgba(203, 139, 193, 0.5) 12%, rgba(148, 156, 225, 0.48) 92%, transparent 92%);
  font-weight: 800;
}

.rn-search-results button > i {
  position: absolute;
  top: 50%;
  right: 14px;
  color: #737ba8;
  font-size: 0.93rem;
  font-style: normal;
  transform: translateY(-50%);
}

.rn-search-empty {
  display: grid;
  align-content: center;
  justify-items: center;
  padding: 24px;
  color: #777e9e;
  text-align: center;
}

.rn-search-empty::before {
  width: 42px;
  height: 42px;
  margin-bottom: 13px;
  border: 1px solid rgba(89, 98, 161, 0.24);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(116, 125, 189, 0.13), transparent 66%);
  box-shadow: 0 0 0 9px rgba(106, 116, 183, 0.035);
  content: "⌕";
  color: #69719c;
  font: 400 1.4rem/40px serif;
}

.rn-search-empty b {
  color: #69719b;
  font: 800 0.58rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.15em;
}

.rn-search-empty span {
  margin-top: 8px;
  font-size: 0.67rem;
  line-height: 1.75;
}

.rn-reader-layer {
  position: fixed;
  inset: 0;
  z-index: 145;
  display: grid;
  align-items: end;
  padding: 16px max(16px, env(safe-area-inset-right)) calc(16px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}

.rn-reader-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 5, 17, 0.82);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
}

.rn-reader-panel {
  position: relative;
  z-index: 1;
  width: min(100%, 680px);
  max-height: calc(100dvh - 32px - env(safe-area-inset-bottom));
  margin: 0 auto;
  padding: 23px;
  overflow-y: auto;
  overscroll-behavior: contain;
  border: 1px solid rgba(231, 233, 250, 0.72);
  border-radius: 25px;
  color: var(--rn-ink);
  background:
    radial-gradient(circle at 88% 8%, rgba(125, 131, 190, 0.12), transparent 27%),
    repeating-linear-gradient(0deg, rgba(58, 64, 113, 0.018) 0, rgba(58, 64, 113, 0.018) 1px, transparent 1px, transparent 5px),
    linear-gradient(116deg, #dfe0ec 0%, #eff0f5 33%, #e7e7f0 100%);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.64), inset 12px 0 24px rgba(57, 61, 111, 0.08);
  animation: rnEditorRise 280ms cubic-bezier(0.22, 1, 0.36, 1);
  scrollbar-color: rgba(88, 98, 163, 0.4) transparent;
}

.rn-reader-panel > header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 15px;
  border-bottom: 1px solid rgba(65, 71, 125, 0.2);
}

.rn-reader-panel > header p {
  margin: 0 0 5px;
  color: #6b739e;
  font: 800 0.55rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.17em;
}

.rn-reader-panel > header h2 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.25rem, 5vw, 1.75rem);
  font-weight: 500;
  letter-spacing: 0.06em;
}

#researchNotebookReaderCloseButton {
  display: grid;
  width: 39px;
  height: 39px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(74, 82, 139, 0.26);
  border-radius: 50%;
  color: #505780;
  background: rgba(255, 255, 255, 0.28);
  font-size: 1.2rem;
}

.rn-reader-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin: 16px 0;
}

.rn-reader-meta > div {
  min-width: 0;
  padding: 9px 10px;
  border: 1px solid rgba(70, 77, 134, 0.17);
  border-radius: 8px;
  background: rgba(93, 101, 164, 0.055);
}

.rn-reader-meta dt {
  margin-bottom: 4px;
  color: #777da7;
  font: 800 0.5rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.1em;
}

.rn-reader-meta dd {
  margin: 0;
  color: #343a62;
  font-size: 0.68rem;
  font-weight: 700;
  white-space: normal;
  overflow-wrap: anywhere;
}

.rn-reader-panel > section {
  margin-top: 12px;
  padding: 15px 17px 17px;
  border: 1px solid rgba(70, 76, 133, 0.16);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.2);
}

.rn-reader-panel > section:nth-of-type(2) {
  background: linear-gradient(135deg, rgba(116, 127, 196, 0.09), rgba(255, 255, 255, 0.19));
}

.rn-reader-panel > section h3 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 10px;
  color: #4e557e;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
}

.rn-reader-panel > section h3 span {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border: 1px solid rgba(75, 82, 141, 0.3);
  border-radius: 50%;
  color: #68709d;
  font: 800 0.49rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.rn-reader-panel > section p {
  margin: 0;
  color: #333958;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 0.88rem;
  line-height: 1.9;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.rn-reader-panel > footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 18px;
}

.rn-reader-panel > footer button {
  min-height: 42px;
  padding: 8px 18px;
  border: 1px solid rgba(76, 84, 143, 0.32);
  border-radius: 999px;
  color: #f4f5ff;
  background: linear-gradient(135deg, #515a91, #3a3c72);
  font-size: 0.7rem;
  font-weight: 800;
}

.rn-editor-layer {
  position: fixed;
  inset: 0;
  z-index: 140;
  display: grid;
  align-items: end;
  padding: 16px max(16px, env(safe-area-inset-right)) calc(16px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}

.rn-editor-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 5, 17, 0.8);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
}

.rn-editor-panel {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(100%, 720px);
  max-height: calc(100svh - 32px - env(safe-area-inset-bottom));
  margin: 0 auto;
  padding: 23px;
  overflow: auto;
  border: 1px solid rgba(181, 188, 255, 0.34);
  border-radius: 25px;
  color: #edf0ff;
  background:
    radial-gradient(circle at 92% 0%, rgba(143, 116, 210, 0.19), transparent 31%),
    linear-gradient(155deg, #202958, #111736 62%, #0d112a);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.6), inset 0 1px rgba(255, 255, 255, 0.09);
  animation: rnEditorRise 280ms cubic-bezier(0.22, 1, 0.36, 1);
  scrollbar-color: rgba(166, 177, 237, 0.4) transparent;
}

.rn-editor-panel > header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}

.rn-editor-panel > header p {
  margin: 0 0 4px;
  color: #aeb9ec;
  font: 800 0.53rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.17em;
}

.rn-editor-panel > header h2 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 1.45rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

#researchNotebookEditorCloseButton {
  display: grid;
  width: 39px;
  height: 39px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(183, 194, 243, 0.25);
  border-radius: 50%;
  color: #e6e9ff;
  background: rgba(255, 255, 255, 0.055);
  font-size: 1.2rem;
}

.rn-editor-autosave {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 30px;
  margin: 0 0 16px;
  padding: 6px 10px;
  border: 1px solid rgba(145, 204, 223, 0.13);
  border-radius: 9px;
  color: #9eacd6;
  background: rgba(102, 150, 183, 0.055);
  font-size: 0.63rem;
}

.rn-editor-autosave i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #82d6bd;
  box-shadow: 0 0 8px rgba(130, 214, 189, 0.65);
}

.rn-editor-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.rn-editor-grid > label {
  min-width: 0;
}

.rn-editor-date-field {
  min-width: 0;
}

.rn-editor-date-control {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  min-height: 43px;
  overflow: hidden;
  border: 1px solid rgba(177, 187, 238, 0.19);
  border-radius: 10px;
  background: rgba(5, 9, 28, 0.46);
  box-shadow: inset 0 1px 7px rgba(0, 0, 0, 0.16);
}

.rn-editor-date-control:focus-within {
  border-color: rgba(167, 184, 255, 0.56);
  box-shadow: 0 0 0 3px rgba(134, 155, 236, 0.11);
}

.rn-editor-panel label {
  display: grid;
  gap: 6px;
  color: #abb4d6;
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.rn-editor-wide { margin-top: 12px; }

.rn-editor-field-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.rn-editor-field-label small {
  color: #8f9ac8;
  font: 700 0.57rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.04em;
}

.rn-editor-field-label small.is-over { color: #f0a9bd; }

.rn-editor-budget {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 10px 0 0;
  padding: 8px 10px;
  border: 1px solid rgba(154, 172, 232, 0.15);
  border-radius: 9px;
  color: #97a4d0;
  background: rgba(102, 123, 183, 0.055);
  font-size: 0.59rem;
}

.rn-editor-budget b {
  color: #aebbe8;
  font-weight: 700;
  text-align: right;
}

.rn-editor-budget.is-over {
  border-color: rgba(226, 137, 166, 0.25);
  color: #d3a3b5;
  background: rgba(143, 66, 97, 0.1);
}

.rn-editor-budget.is-over b { color: #f0b4c6; }

.rn-editor-panel input,
.rn-editor-panel select,
.rn-editor-panel textarea {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  min-height: 43px;
  padding: 10px 12px;
  border: 1px solid rgba(177, 187, 238, 0.19);
  border-radius: 10px;
  outline: none;
  color: #f3f4ff;
  background: rgba(5, 9, 28, 0.46);
  box-shadow: inset 0 1px 7px rgba(0, 0, 0, 0.16);
  font: inherit;
  font-size: 0.78rem;
}

.rn-editor-panel textarea {
  min-height: 118px;
  resize: vertical;
  line-height: 1.65;
}

.rn-editor-panel input:focus,
.rn-editor-panel select:focus,
.rn-editor-panel textarea:focus {
  border-color: rgba(167, 184, 255, 0.56);
  box-shadow: 0 0 0 3px rgba(134, 155, 236, 0.11);
}

.rn-editor-panel input::placeholder,
.rn-editor-panel textarea::placeholder { color: #727b9e; }

.rn-editor-panel .rn-editor-date-control #researchNotebookDateInput {
  display: block;
  box-sizing: border-box;
  width: 100% !important;
  min-width: 0 !important;
  max-width: 100% !important;
  inline-size: 100% !important;
  min-inline-size: 0 !important;
  max-inline-size: 100% !important;
  min-height: 41px;
  margin: 0;
  padding: 10px 12px;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  outline: none;
  background: transparent;
  box-shadow: none;
  -webkit-appearance: none;
  appearance: none;
}

.rn-editor-panel .rn-editor-date-control #researchNotebookDateInput:focus {
  border-color: transparent;
  box-shadow: none;
}

.rn-editor-panel .rn-editor-date-control #researchNotebookDateInput::-webkit-date-and-time-value {
  min-width: 0;
  margin: 0;
  text-align: center;
}

.rn-editor-panel option { color: #f3f4ff; background: #171d42; }

.rn-editor-panel > footer {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
  gap: 10px;
  margin-top: 18px;
}

.rn-editor-panel > footer button {
  min-height: 45px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 800;
}

.rn-editor-secondary {
  border: 1px solid rgba(177, 188, 238, 0.21);
  color: #c8d0ee;
  background: rgba(255, 255, 255, 0.045);
}

.rn-editor-primary {
  border: 1px solid rgba(213, 218, 255, 0.5);
  color: #171a3c;
  background: linear-gradient(135deg, #e0e6ff, #aaa9e8);
  box-shadow: 0 8px 22px rgba(110, 105, 196, 0.25);
}

@keyframes rnStarBreath {
  from { opacity: 0.25; transform: scale(0.7); }
  to { opacity: 0.9; transform: scale(1.25); }
}

@keyframes rnCategoryItemAppear {
  from { opacity: 0; translate: 0 6px; }
  to { opacity: 1; translate: 0 0; }
}

@keyframes rnPageTurnNext {
  0% {
    opacity: 1;
    transform: translate3d(0, 0, 0) rotateY(0deg);
  }
  28% {
    opacity: 1;
    transform: translate3d(-1px, 0, 0) rotateY(-20deg);
  }
  62% {
    opacity: 0.98;
    transform: translate3d(-4px, 0, 0) rotateY(-54deg);
  }
  84% {
    opacity: 0.74;
    transform: translate3d(-7px, 0, 0) rotateY(-76deg);
  }
  100% {
    opacity: 0;
    transform: translate3d(-9px, 0, 0) rotateY(-89deg);
  }
}

@keyframes rnPageTurnPrevious {
  0% {
    opacity: 0;
    transform: translate3d(-9px, 0, 0) rotateY(-89deg);
  }
  16% {
    opacity: 0.72;
    transform: translate3d(-7px, 0, 0) rotateY(-76deg);
  }
  42% {
    opacity: 0.96;
    transform: translate3d(-4px, 0, 0) rotateY(-52deg);
  }
  72% {
    opacity: 1;
    transform: translate3d(-1px, 0, 0) rotateY(-18deg);
  }
  100% {
    opacity: 1;
    transform: translate3d(0, 0, 0) rotateY(0deg);
  }
}

@keyframes rnPageFoldShadeNext {
  0% { opacity: 0; }
  52% { opacity: 0.42; }
  100% { opacity: 0.72; }
}

@keyframes rnPageFoldShadePrevious {
  0% { opacity: 0.72; }
  48% { opacity: 0.34; }
  100% { opacity: 0; }
}

@keyframes rnEditorRise {
  from { opacity: 0; transform: translateY(24px) scale(0.985); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 680px) {
  .research-notebook-view { overflow: hidden; }

  .rn-shell {
    display: grid;
    grid-template-rows: auto auto minmax(0, 1fr);
    width: 100%;
    height: 100vh;
    height: 100dvh;
    min-height: 0;
    padding-top: calc(33px + env(safe-area-inset-top));
    padding-right: max(10px, env(safe-area-inset-right));
    padding-bottom: max(8px, env(safe-area-inset-bottom));
    padding-left: max(10px, env(safe-area-inset-left));
  }

  .rn-topbar {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 7px;
  }

  .rn-heading {
    position: relative;
    grid-column: 2;
    grid-row: 1;
    min-width: 0;
    transform: none;
  }

  .rn-back-button,
  .rn-new-button {
    display: inline-flex;
    inline-size: 56px;
    grid-row: 1;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    padding: 6px 0;
    font-size: 0.64rem;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
  }

  .rn-back-button { justify-self: start; }
  .rn-new-button { justify-self: end; }

  .rn-new-button span {
    margin-right: 2px;
    font-size: 0.86rem;
  }

  .rn-heading p {
    position: absolute;
    right: 0;
    bottom: calc(100% + 3px);
    left: 0;
    margin: 0;
    overflow: hidden;
    font-size: 0.5rem;
    letter-spacing: 0.1em;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .rn-heading h1 {
    font-size: 1.3rem;
    letter-spacing: 0.12em;
  }

  .rn-constellation-rule {
    width: min(82%, 300px);
    margin-block: 6px 8px;
  }

  .rn-book-stage {
    display: flex;
    height: 100%;
    min-height: 0;
    padding: 10px 42px 10px 10px;
    border-radius: 19px;
  }

  .rn-book-stage::before,
  .rn-book-stage::after {
    right: 48px;
    left: 24px;
  }

  .rn-category-tabs {
    top: 24px;
    bottom: 24px;
    width: 42px;
    gap: 6px;
    padding-left: 5px;
  }

  .rn-category-tab {
    width: 37px;
    min-height: 52px;
    gap: 4px;
    padding-inline: 2px;
    border-radius: 0 8px 8px 0;
  }

  .rn-category-tab b { font-size: 0.57rem; }
  .rn-category-tab small { font-size: 0.41rem; }
  .rn-category-tab[aria-selected="true"] { transform: translateX(-4px); }

  .rn-paper {
    height: auto;
    min-height: 0;
    flex: 1;
    padding: 20px 18px 14px;
    border-radius: 4px 12px 12px 4px;
  }

  .rn-paper::before { inset: 11px; }
  .rn-paper-corner-a { top: 11px; left: 11px; }
  .rn-paper-corner-b { right: 11px; bottom: 11px; }

  .rn-page-header { padding-bottom: 10px; }

  .rn-note-page { padding: 12px 3px 8px; }

  .rn-note-toolbar {
    align-items: center;
    gap: 7px;
  }

  .rn-note-toolbar button {
    min-height: 32px;
    padding: 5px 8px;
    font-size: 0.62rem;
    white-space: nowrap;
  }

  .rn-note-toolbar-primary,
  .rn-note-toolbar-actions {
    flex-direction: row;
    gap: 5px;
  }

  .rn-select-note { gap: 5px; }
  .rn-select-note i { width: 13px; height: 13px; }
  .rn-note-toolbar .rn-search-button { width: 32px; min-width: 32px; padding: 0; }

  .rn-note-meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    margin: 10px 0 11px;
  }

  .rn-note-meta > div { padding: 7px 8px; }
  .rn-note-meta dt { margin-bottom: 3px; font-size: 0.46rem; }
  .rn-note-meta dd { font-size: 0.64rem; }

  .rn-note-title-block {
    gap: 9px;
    margin-bottom: 10px;
  }

  .rn-note-title-block h2 { font-size: clamp(1.16rem, 5.5vw, 1.42rem); }

  .rn-note-section {
    margin-bottom: 9px;
    padding: 11px 13px 12px;
  }

  .rn-note-section h3 {
    gap: 8px;
    margin-bottom: 7px;
    font-size: 0.7rem;
  }

  .rn-note-section h3 span { width: 22px; height: 22px; }

  .rn-note-section p {
    font-size: 0.82rem;
    line-height: 1.68;
  }

  .rn-page-navigation {
    padding-top: 10px;
  }

  .rn-page-navigation button {
    width: 38px;
    height: 34px;
  }

  .rn-page-navigation span { font-size: 0.53rem; }

  .rn-selection-dock {
    position: fixed;
    left: 50%;
    grid-template-columns: 1fr auto auto;
    bottom: calc(8px + env(safe-area-inset-bottom));
    margin: 0;
    border-radius: 999px;
    transform: translateX(-50%);
  }

  .rn-selection-dock button { padding-inline: 9px; }

  .rn-status {
    position: fixed;
    z-index: 9;
    right: 12px;
    bottom: calc(82px + env(safe-area-inset-bottom));
    left: 12px;
    min-height: 0;
    margin: 0;
    pointer-events: none;
  }

  .rn-search-layer {
    padding: 8px max(8px, env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));
  }

  .rn-search-panel {
    height: calc(100dvh - 16px - env(safe-area-inset-bottom));
    max-height: calc(100dvh - 16px - env(safe-area-inset-bottom));
    padding: 19px 15px;
    border-radius: 22px;
  }

  .rn-search-results button { padding-inline: 12px 37px; }

  .rn-reader-layer {
    padding: 8px max(8px, env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));
  }

  .rn-reader-panel {
    max-height: calc(100dvh - 16px - env(safe-area-inset-bottom));
    padding: 19px 15px;
    border-radius: 22px;
  }

  .rn-reader-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .rn-editor-layer {
    padding: 8px max(8px, env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));
  }

  .rn-editor-panel {
    max-height: calc(100dvh - 16px - env(safe-area-inset-bottom));
    padding: 19px 15px;
    border-radius: 22px;
  }

  .rn-editor-budget {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .rn-editor-budget b { text-align: left; }
}

@media (max-width: 390px) {
  .research-entry {
    grid-template-columns: 44px minmax(0, 1fr) auto;
    gap: 9px;
    padding-inline: 10px;
  }

  .rn-heading { transform: none; }
  .rn-heading p { display: none; }
  .rn-heading h1 { font-size: 1.2rem; }
  .rn-back-button,
  .rn-new-button { padding-inline: 0; font-size: 0.61rem; }
  .rn-book-stage { padding-right: 39px; }
  .rn-category-tabs { width: 39px; }
  .rn-category-tab { width: 35px; }
  .rn-paper { padding-inline: 16px; }
  .rn-note-section { padding-inline: 13px; }
  .rn-note-toolbar { gap: 4px; }
  .rn-note-toolbar-primary,
  .rn-note-toolbar-actions { gap: 4px; }
  .rn-note-toolbar button { padding-inline: 7px; }
  .rn-note-toolbar .rn-search-button { padding: 0; }
  .rn-search-result-snippet { grid-template-columns: 1fr; gap: 3px; }
  .rn-search-result-snippet small { justify-self: start; }
  .rn-editor-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) and (max-height: 760px) {
  .rn-shell { padding-top: calc(18px + env(safe-area-inset-top)); }
  .rn-heading { transform: none; }
  .rn-heading p { display: none; }
  .rn-constellation-rule { margin-block: 3px 5px; }
  .rn-paper { padding: 16px 15px 10px; }
  .rn-note-page { padding-block: 8px 5px; }
  .rn-note-meta { margin-block: 7px 8px; }
  .rn-note-title-block { margin-bottom: 7px; }
  .rn-note-section { margin-bottom: 6px; padding-block: 8px 9px; }
  .rn-note-section p { line-height: 1.55; }
  .rn-note-page {
    --rn-observation-lines: 4;
    --rn-countermeasure-lines: 3;
  }
  .rn-page-navigation { padding-top: 7px; }
}

@media (max-width: 680px) and (max-height: 620px) {
  .rn-shell { padding-top: calc(9px + env(safe-area-inset-top)); }
  .rn-heading h1 { font-size: 1.08rem; }
  .rn-back-button,
  .rn-new-button { min-height: 32px; }
  .rn-constellation-rule { margin-block: 1px 3px; }
  .rn-page-header { padding-bottom: 7px; }
  .rn-note-toolbar button { min-height: 28px; }
  .rn-note-meta { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; margin-block: 5px 6px; }
  .rn-note-meta > div { padding: 5px 4px; }
  .rn-note-meta dt { overflow: hidden; letter-spacing: 0.04em; text-overflow: ellipsis; white-space: nowrap; }
  .rn-note-meta dd { font-size: 0.57rem; }
  .rn-note-title-block { margin-bottom: 5px; }
  .rn-note-section { padding-block: 7px; }
  .rn-note-section h3 { margin-bottom: 4px; }
  .rn-note-page {
    --rn-observation-lines: 3;
    --rn-countermeasure-lines: 2;
  }
  .rn-page-navigation button { height: 30px; }
}

@media (prefers-reduced-motion: reduce) {
  .rn-night-sky i,
  .rn-paper.is-category-entering > .rn-page-header,
  .rn-paper.is-category-entering > .rn-empty-page > *,
  .rn-paper.is-category-entering > .rn-note-page > *,
  .rn-paper.is-category-entering > .rn-page-navigation,
  .rn-page-turn-sheet,
  .rn-page-fold-shade,
  .rn-search-panel,
  .rn-reader-panel,
  .rn-editor-panel {
    animation: none;
  }
}