@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,300;0,400;0,500;1,400&family=Instrument+Serif:ital@0;1&display=swap');

:root {
  --kioku-black: #020705;
  --kioku-ink: #e2ffec;
  --kioku-green: #61f5a4;
  --kioku-green-soft: #92cdaa;
  --kioku-line: rgba(97, 245, 164, 0.22);
  --kioku-line-strong: rgba(97, 245, 164, 0.56);
  --kioku-panel: #07120d;
  --kioku-serif: 'Instrument Serif', Georgia, serif;
  --kioku-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;
}

body.kioku-page {
  --mina-ui-bg: var(--kioku-black);
  --mina-ui-text: var(--kioku-ink);
  --mina-ui-muted: var(--kioku-green-soft);
  --mina-ui-border: #347451;
  --mina-ui-accent: var(--kioku-green);
  --mina-ui-surface: var(--kioku-panel);
  margin: 0;
  overflow-x: hidden;
  background: radial-gradient(circle at 82% 5%, rgba(48, 150, 95, 0.14), transparent 26rem), var(--kioku-black);
  color: var(--kioku-ink);
  font-family: var(--kioku-mono);
}

.kioku-page .kioku-main,
.kioku-page .kioku-main * { box-sizing: border-box; }
.kioku-main { width: 100%; padding-bottom: 12rem; }
.kioku-main p, .kioku-main ul, .kioku-main ol, .kioku-main figure, .kioku-main dl { margin: 0; }
.kioku-main ul, .kioku-main ol { padding: 0; list-style: none; }

.kioku-hero, .kioku-thesis, .kioku-pipeline, .kioku-atlas, .kioku-principles, .kioku-coda {
  width: min(100%, 104rem);
  margin: 0 auto;
  border-right: 1px solid var(--kioku-line);
  border-left: 1px solid var(--kioku-line);
}

.kioku-hero {
  min-height: 100svh;
  display: grid;
  grid-template-columns: 4.25rem minmax(20rem, 0.82fr) minmax(26rem, 1.18fr);
  border-bottom: 1px solid var(--kioku-line);
}

.kioku-hero__index {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 2rem 0 3rem;
  border-right: 1px solid var(--kioku-line);
  color: var(--kioku-green-soft);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  writing-mode: vertical-rl;
}

.kioku-hero__index span:first-child { color: var(--kioku-green); font-family: var(--kioku-serif); font-size: 1.4rem; }
.kioku-hero__copy { display: flex; flex-direction: column; justify-content: center; min-width: 0; padding: clamp(3rem, 7vw, 7rem) clamp(2rem, 5vw, 6rem); }
.kioku-kicker, .kioku-section-number { color: var(--kioku-green); font-size: 0.72rem; font-weight: 500; letter-spacing: 0.16em; line-height: 1.4; text-transform: uppercase; }

.kioku-hero h1 {
  margin: 0.12em 0 0;
  color: var(--kioku-ink);
  font-family: var(--kioku-serif);
  font-size: clamp(6.5rem, 14vw, 14rem);
  font-weight: 400;
  letter-spacing: -0.065em;
  line-height: 0.76;
}

.kioku-deck { max-width: 30rem; margin-top: clamp(3rem, 7vh, 6rem) !important; color: var(--kioku-ink); font-family: Helvetica, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif; font-size: clamp(1.35rem, 2.25vw, 2.3rem); font-weight: 400; letter-spacing: -0.025em; line-height: 1.08; }
.kioku-facts { display: grid; gap: 0.7rem; margin-top: 3rem !important; padding-top: 1rem; border-top: 1px solid var(--kioku-line); }
.kioku-facts div { display: grid; grid-template-columns: 6rem 1fr; gap: 1rem; font-size: 0.73rem; line-height: 1.4; }
.kioku-facts dt { color: var(--kioku-green-soft); }
.kioku-facts dd { color: var(--kioku-ink); }

.kioku-hero__media { position: relative; min-width: 0; min-height: 42rem; overflow: hidden; border-left: 1px solid var(--kioku-line); background: #000; }
.kioku-hero__media::after { position: absolute; inset: 0; content: ''; pointer-events: none; background: linear-gradient(90deg, rgba(2, 7, 5, 0.48), transparent 28%), repeating-linear-gradient(0deg, transparent 0 3px, rgba(112, 255, 179, 0.025) 3px 4px); }
.kioku-hero__media video { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.88) contrast(1.08); }
.kioku-hero__media figcaption { position: absolute; right: 1.5rem; bottom: 1.5rem; z-index: 2; padding: 0.5rem 0.65rem; border: 1px solid var(--kioku-line); background: rgba(2, 7, 5, 0.82); color: var(--kioku-green-soft); font-size: 0.62rem; letter-spacing: 0.08em; text-transform: uppercase; }

.kioku-thesis { display: grid; grid-template-columns: minmax(11rem, 0.28fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 8rem); padding: clamp(6rem, 12vw, 13rem) clamp(2rem, 6vw, 7rem); }
.kioku-thesis h2, .kioku-section-heading h2, .kioku-atlas h2, .kioku-coda h2 { max-width: 68rem; color: var(--kioku-ink); font-family: var(--kioku-serif); font-size: clamp(3.1rem, 7vw, 7.5rem); font-weight: 400; letter-spacing: -0.045em; line-height: 0.93; }
.kioku-thesis h2 em { color: var(--kioku-green); font-weight: 400; }
.kioku-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(2rem, 6vw, 7rem); max-width: 66rem; margin-top: clamp(4rem, 8vw, 8rem); color: var(--kioku-green-soft); font-size: clamp(0.95rem, 1.2vw, 1.18rem); line-height: 1.75; }

.kioku-pipeline { padding: clamp(5rem, 9vw, 9rem) clamp(2rem, 6vw, 7rem); border-top: 1px solid var(--kioku-line); border-bottom: 1px solid var(--kioku-line); background: linear-gradient(135deg, rgba(97, 245, 164, 0.055), transparent 48%); }
.kioku-section-heading { display: grid; grid-template-columns: minmax(11rem, 0.28fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 8rem); }
.kioku-section-heading h2 { font-size: clamp(3rem, 5.5vw, 6rem); }
.kioku-pipeline ol { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: clamp(5rem, 9vw, 9rem); border-top: 1px solid var(--kioku-line-strong); }
.kioku-pipeline li { position: relative; min-height: 19rem; padding: 2rem 1.6rem; border-right: 1px solid var(--kioku-line); }
.kioku-pipeline li:last-child { border-right: 0; }
.kioku-pipeline li::before { position: absolute; top: -0.36rem; left: 0; width: 0.68rem; height: 0.68rem; border: 1px solid var(--kioku-green); border-radius: 50%; background: var(--kioku-black); content: ''; }
.kioku-pipeline li > span, .kioku-principles article > span { display: block; color: var(--kioku-green-soft); font-size: 0.65rem; letter-spacing: 0.12em; }
.kioku-pipeline strong { display: block; margin-top: 4rem; color: var(--kioku-ink); font-family: Helvetica, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif; font-size: clamp(2rem, 3vw, 3.2rem); font-weight: 400; letter-spacing: -0.035em; line-height: 1; }
.kioku-pipeline li p { margin-top: 1rem; color: var(--kioku-green-soft); font-size: 0.82rem; line-height: 1.65; }

.kioku-atlas {
  min-height: 70rem;
  padding-bottom: clamp(5rem, 9vw, 9rem);
  border-top: 1px solid var(--kioku-line);
}

.kioku-atlas__copy {
  display: grid;
  grid-template-columns: minmax(11rem, 0.28fr) minmax(16rem, 0.72fr) minmax(18rem, 0.72fr);
  gap: clamp(2rem, 6vw, 8rem);
  padding: clamp(5rem, 9vw, 9rem) clamp(2rem, 6vw, 7rem);
}

.kioku-atlas h2 {
  font-size: clamp(4rem, 6vw, 7rem);
}

.kioku-atlas__copy > p:not(.kioku-section-number) {
  max-width: 32rem;
  color: var(--kioku-green-soft);
  font-size: 1rem;
  line-height: 1.75;
}

.kioku-atlas__copy ul {
  max-width: 34rem;
  border-top: 1px solid var(--kioku-line);
}

.kioku-atlas__copy li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--kioku-line);
  color: var(--kioku-ink);
  font-size: 0.72rem;
  line-height: 1.5;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.kioku-timeline {
  margin: 0 clamp(1rem, 3vw, 3rem);
  overflow: hidden;
  border: 1px solid var(--kioku-line-strong);
  background: #030a07;
  box-shadow: 0 2rem 8rem rgba(0, 0, 0, 0.58);
}

.kioku-timeline__toolbar {
  display: grid;
  grid-template-columns: minmax(10rem, 0.75fr) minmax(13rem, 1.4fr) auto;
  align-items: end;
  gap: 1.5rem;
  padding: 1rem;
  border-bottom: 1px solid var(--kioku-line);
}

.kioku-timeline__brand {
  display: grid;
  gap: 0.3rem;
  color: var(--kioku-green-soft);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
}

.kioku-timeline__brand strong {
  color: var(--kioku-ink);
  font-size: 0.72rem;
  font-weight: 400;
}

.kioku-timeline__search {
  display: grid;
  gap: 0.35rem;
  color: var(--kioku-green-soft);
  font-size: 0.55rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.kioku-timeline__search input {
  width: 100%;
  min-width: 0;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--kioku-line);
  border-radius: 0;
  outline: 0;
  background: rgba(9, 39, 24, 0.5);
  color: var(--kioku-ink);
  font: 0.7rem var(--kioku-mono);
}

.kioku-timeline__search input:focus {
  border-color: var(--kioku-green);
}

.kioku-timeline__zoom {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.kioku-timeline__zoom button {
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.5rem;
  border: 1px solid var(--kioku-line);
  border-radius: 0;
  background: rgba(9, 39, 24, 0.5);
  color: var(--kioku-ink);
  font: 0.65rem var(--kioku-mono);
  cursor: pointer;
}

.kioku-timeline__zoom button:hover,
.kioku-timeline__zoom button:focus-visible {
  border-color: var(--kioku-green);
  background: rgba(97, 245, 164, 0.13);
}

.kioku-timeline__zoom input {
  width: 7rem;
  accent-color: var(--kioku-green);
}

.kioku-timeline__instructions,
.kioku-timeline__legend {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 2.6rem;
  padding: 0.65rem 1rem;
  color: var(--kioku-green-soft);
  font-size: 0.58rem;
  letter-spacing: 0.05em;
}

.kioku-timeline__instructions {
  border-bottom: 1px solid var(--kioku-line);
}

.kioku-timeline__instructions output {
  margin-left: auto;
  color: var(--kioku-green);
}

.kioku-timeline__viewport {
  position: relative;
  height: 45rem;
  overflow-x: auto;
  overflow-y: hidden;
  outline: 0;
  cursor: grab;
  scrollbar-color: var(--kioku-line-strong) #020705;
  scrollbar-width: thin;
  overscroll-behavior-inline: contain;
  touch-action: pan-y;
}

.kioku-timeline__viewport:focus-visible {
  box-shadow: inset 0 0 0 2px var(--kioku-green);
}

.kioku-timeline__viewport.is-dragging {
  cursor: grabbing;
  user-select: none;
}

.kioku-timeline__viewport::-webkit-scrollbar {
  height: 0.75rem;
}

.kioku-timeline__viewport::-webkit-scrollbar-track {
  background: #020705;
}

.kioku-timeline__viewport::-webkit-scrollbar-thumb {
  border: 2px solid #020705;
  background: var(--kioku-line-strong);
}

.kioku-timeline__stage {
  position: relative;
  height: 100%;
  min-width: 100%;
  background:
    repeating-linear-gradient(0deg, transparent 0 5.95rem, rgba(97, 245, 164, 0.055) 6rem),
    linear-gradient(180deg, rgba(97, 245, 164, 0.035), transparent 35%, transparent 65%, rgba(97, 245, 164, 0.035));
}

.kioku-timeline__axis {
  position: absolute;
  top: 350px;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--kioku-line-strong);
}

.kioku-timeline__year {
  position: absolute;
  top: 326px;
  bottom: 0;
  width: 1px;
  background: rgba(97, 245, 164, 0.08);
}

.kioku-timeline__year i {
  position: absolute;
  top: 18px;
  left: 0;
  width: 1px;
  height: 13px;
  background: var(--kioku-line-strong);
}

.kioku-timeline__year b {
  position: absolute;
  top: 38px;
  left: 0;
  color: rgba(146, 205, 170, 0.55);
  font-size: 0.54rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  transform: translateX(-50%);
}

.kioku-timeline__year.is-major {
  background: rgba(97, 245, 164, 0.16);
}

.kioku-timeline__year.is-major i {
  top: 11px;
  height: 20px;
  background: var(--kioku-green);
}

.kioku-timeline__year.is-major b {
  color: var(--kioku-green);
}

.kioku-memory {
  --stem-length: 80px;
  position: absolute;
  z-index: 2;
  display: grid;
  gap: 0.55rem;
  width: 13.5rem;
  min-height: 7.8rem;
  padding: 1rem;
  border: 1px solid var(--kioku-line);
  border-radius: 0;
  background: rgba(4, 16, 10, 0.94);
  color: var(--kioku-ink);
  font-family: var(--kioku-mono);
  text-align: left;
  transform: translateX(-50%);
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease, transform 140ms ease, opacity 140ms ease;
}

.kioku-memory::before {
  position: absolute;
  left: 50%;
  width: 1px;
  height: var(--stem-length);
  background: var(--kioku-line-strong);
  content: '';
}

.kioku-memory::after {
  position: absolute;
  left: calc(50% - 0.3rem);
  width: 0.6rem;
  height: 0.6rem;
  border: 1px solid var(--kioku-green);
  border-radius: 50%;
  background: #030a07;
  content: '';
}

.kioku-memory.is-above::before { top: 100%; }
.kioku-memory.is-above::after { top: calc(100% + var(--stem-length) - 0.3rem); }
.kioku-memory.is-below::before { bottom: 100%; }
.kioku-memory.is-below::after { bottom: calc(100% + var(--stem-length) - 0.3rem); }
.kioku-memory.is-inferred::after { background: var(--kioku-green); }
.kioku-memory.is-uncertain { border-style: dashed; }
.kioku-memory.is-uncertain::after { background: #030a07; box-shadow: 0 0 0 3px rgba(97, 245, 164, 0.13); }

.kioku-memory:hover,
.kioku-memory:focus-visible {
  z-index: 4;
  border-color: var(--kioku-green);
  outline: 0;
  background: rgba(10, 44, 26, 0.98);
  transform: translateX(-50%) translateY(-0.25rem);
}

.kioku-memory[hidden] {
  display: none;
}

.kioku-memory > span {
  color: var(--kioku-green);
  font-size: 0.52rem;
  letter-spacing: 0.11em;
}

.kioku-memory strong {
  font-family: var(--kioku-serif);
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1;
}

.kioku-memory small {
  color: var(--kioku-green-soft);
  font-size: 0.6rem;
  line-height: 1.45;
}

.kioku-timeline__legend {
  border-top: 1px solid var(--kioku-line);
}

.kioku-timeline__legend span:last-child {
  margin-left: auto;
}

.kioku-timeline__legend i {
  display: inline-block;
  width: 0.52rem;
  height: 0.52rem;
  margin-right: 0.35rem;
  border: 1px solid var(--kioku-green);
  border-radius: 50%;
}

.kioku-timeline__legend .is-memory { background: var(--kioku-green); }
.kioku-timeline__legend .is-uncertain { border-style: dashed; box-shadow: 0 0 0 2px rgba(97, 245, 164, 0.12); }

.kioku-memory-dialog {
  width: min(36rem, calc(100% - 2rem));
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid var(--kioku-green);
  border-radius: 0;
  background: #04100a;
  color: var(--kioku-ink);
  font-family: var(--kioku-mono);
  box-shadow: 0 2rem 10rem #000;
}

.kioku-memory-dialog::backdrop {
  background: rgba(0, 5, 2, 0.84);
  backdrop-filter: blur(8px);
}

.kioku-memory-dialog__close {
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 1px solid var(--kioku-line);
  border-radius: 0;
  background: transparent;
  color: var(--kioku-ink);
  font: 1rem var(--kioku-mono);
  cursor: pointer;
}

.kioku-memory-dialog__meta {
  color: var(--kioku-green);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
}

.kioku-memory-dialog h3 {
  margin-top: 1.5rem;
  font-family: var(--kioku-serif);
  font-size: clamp(2.7rem, 7vw, 5rem);
  font-weight: 400;
  line-height: 0.95;
}

.kioku-memory-dialog > p:not(.kioku-memory-dialog__meta) {
  margin-top: 2rem;
  color: var(--kioku-green-soft);
  font-size: 0.85rem;
  line-height: 1.7;
}

.kioku-memory-dialog dl {
  display: grid;
  margin-top: 2.5rem;
  border-top: 1px solid var(--kioku-line);
}

.kioku-memory-dialog dl div {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--kioku-line);
  font-size: 0.65rem;
  line-height: 1.4;
}

.kioku-memory-dialog dt { color: var(--kioku-green-soft); }
.kioku-memory-dialog dd { margin: 0; color: var(--kioku-ink); }

.kioku-spatial {
  --spatial-bg: #020403;
  --spatial-panel: rgba(5, 12, 9, 0.88);
  --spatial-panel-strong: rgba(2, 8, 5, 0.96);
  --spatial-line: rgba(111, 255, 179, 0.18);
  --spatial-line-strong: rgba(111, 255, 179, 0.45);
  --spatial-text: #bcffd7;
  --spatial-muted: #7bd19f;
  --spatial-bright: #dbffec;
  --spatial-accent: #6fffb3;
  --spatial-accent-dim: rgba(111, 255, 179, 0.14);
  --spatial-danger: #ff7c6b;
  position: relative;
  min-height: 50rem;
  margin: 0 clamp(1rem, 3vw, 3rem);
  overflow: hidden;
  border: 1px solid var(--spatial-line-strong);
  background:
    radial-gradient(circle at 10% 20%, rgba(111, 255, 179, 0.08), transparent 28rem),
    radial-gradient(circle at 90% 10%, rgba(51, 150, 98, 0.12), transparent 32rem),
    linear-gradient(180deg, #010201 0%, #040907 50%, #020403 100%);
  color: var(--spatial-text);
  font-family: 'SF Mono', Monaco, Menlo, Consolas, var(--kioku-mono);
  box-shadow: 0 2rem 8rem rgba(0, 0, 0, 0.58);
}

.kioku-spatial button,
.kioku-spatial input,
.kioku-spatial select,
.kioku-spatial textarea {
  border: 1px solid var(--spatial-line);
  border-radius: 12px;
  background: rgba(6, 18, 12, 0.92);
  color: var(--spatial-text);
  font: inherit;
}

.kioku-spatial button {
  padding: 10px 12px;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.kioku-spatial button:hover,
.kioku-spatial button:focus-visible {
  border-color: var(--spatial-line-strong);
  outline: 0;
  transform: translateY(-1px);
}

.kioku-spatial button.primary {
  background: rgba(111, 255, 179, 0.12);
}

.kioku-spatial button.danger {
  border-color: rgba(255, 124, 107, 0.3);
  background: rgba(255, 124, 107, 0.08);
  color: var(--spatial-danger);
}

.kioku-spatial__topbar {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  z-index: 12;
  background: linear-gradient(180deg, rgba(2, 8, 5, 0.96), rgba(2, 8, 5, 0.64), transparent);
  pointer-events: none;
}

.kioku-spatial__controls,
.kioku-spatial__identity {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 18px 0;
  pointer-events: auto;
}

.kioku-spatial__controls input,
.kioku-spatial__controls select {
  padding: 10px 12px;
}

.kioku-spatial__controls input[type='search'] {
  min-width: 280px;
  flex: 1 1 280px;
}

.kioku-spatial__controls input::placeholder,
.kioku-spatial textarea::placeholder {
  color: rgba(123, 209, 159, 0.65);
}

.kioku-spatial__toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--spatial-line);
  border-radius: 12px;
  background: rgba(6, 18, 12, 0.92);
  color: var(--spatial-muted);
  font-size: 0.75rem;
}

.kioku-spatial__toggle input {
  accent-color: var(--spatial-accent);
}

.kioku-spatial__identity {
  justify-content: space-between;
  gap: 1rem;
  padding-top: 12px;
}

.kioku-spatial__identity > div:first-child {
  display: grid;
  gap: 4px;
}

.kioku-spatial__identity p {
  margin: 0;
  color: var(--spatial-muted);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.kioku-spatial__identity h3 {
  margin: 0;
  color: var(--spatial-bright);
  font-size: clamp(1.5rem, 2.6vw, 2.7rem);
  font-weight: 600;
  line-height: 1;
  text-shadow: 0 0 16px rgba(111, 255, 179, 0.18);
}

.kioku-spatial__status {
  min-width: 12rem;
  margin-left: auto;
  color: var(--spatial-muted);
  font-size: 0.72rem;
  text-align: right;
}

.kioku-spatial__status + .kioku-spatial__status {
  min-width: 16rem;
  margin-left: 0;
  text-align: left;
}

.kioku-spatial__canvas {
  position: relative;
  height: 50rem;
  overflow: hidden;
  outline: 0;
  cursor: grab;
  touch-action: none;
}

.kioku-spatial__canvas:focus-visible {
  box-shadow: inset 0 0 0 2px var(--spatial-accent);
}

.kioku-spatial__canvas canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.kioku-spatial__loading {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: grid;
  gap: 1rem;
  place-content: center;
  background: #020403;
  color: var(--spatial-muted);
  font-size: 0.72rem;
  text-align: center;
}

.kioku-spatial__loading[hidden] {
  display: none;
}

.kioku-spatial__loading span {
  width: 2rem;
  height: 2rem;
  margin: 0 auto;
  border: 1px solid var(--spatial-line);
  border-top-color: var(--spatial-accent);
  border-radius: 50%;
  animation: kioku-spatial-spin 900ms linear infinite;
}

@keyframes kioku-spatial-spin {
  to { transform: rotate(360deg); }
}

.kioku-spatial__help {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  z-index: 4;
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  justify-content: flex-end;
  max-width: calc(100% - 2rem);
  color: rgba(123, 209, 159, 0.74);
  font-size: 0.58rem;
  pointer-events: none;
}

.kioku-spatial__notice {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  z-index: 4;
  max-width: 26rem;
  color: rgba(123, 209, 159, 0.68);
  font-size: 0.58rem;
  pointer-events: none;
}

.kioku-spatial__tooltip {
  position: fixed;
  z-index: 9999;
  display: none;
  max-width: min(24rem, calc(100vw - 2rem));
  padding: 6px 10px;
  border: 1px solid rgba(111, 255, 179, 0.25);
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.88);
  color: var(--spatial-bright);
  font-size: 12px;
  line-height: 1.4;
  pointer-events: none;
}

.kioku-spatial__modal-shell,
.kioku-spatial__viewer-shell {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 28px;
}

.kioku-spatial__viewer-shell {
  z-index: 1210;
}

.kioku-spatial__modal-shell.open,
.kioku-spatial__viewer-shell.open {
  display: flex;
}

.kioku-spatial__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.74);
  backdrop-filter: blur(8px);
}

.kioku-spatial__modal,
.kioku-spatial__viewer {
  position: relative;
  width: min(760px, calc(100vw - 40px));
  max-height: calc(100vh - 60px);
  overflow-y: auto;
  padding: 18px;
  border: 1px solid var(--spatial-line-strong);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(7, 18, 12, 0.99), rgba(3, 8, 6, 0.99));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.62);
}

.kioku-spatial__viewer {
  width: min(820px, calc(100vw - 40px));
}

.kioku-spatial__modal-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.kioku-spatial__modal-head h3 {
  margin: 0;
  color: var(--spatial-bright);
  font-size: 1.15rem;
  line-height: 1.35;
}

.kioku-spatial__chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.kioku-spatial__chips span {
  display: inline-flex;
  align-items: center;
  padding: 5px 9px;
  border: 1px solid var(--spatial-line);
  border-radius: 999px;
  background: var(--spatial-accent-dim);
  color: var(--spatial-muted);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.kioku-spatial__chips span.direct {
  border-color: var(--spatial-line-strong);
  color: var(--spatial-bright);
}

.kioku-spatial__modal textarea {
  width: 100%;
  min-height: 140px;
  margin: 10px 0 12px;
  padding: 10px 12px;
  resize: vertical;
}

.kioku-spatial__edit-row {
  display: flex;
  gap: 8px;
}

.kioku-spatial__edit-row input {
  flex: 1 1 160px;
  padding: 10px 12px;
}

.kioku-spatial__meta {
  margin: 10px 0 0;
  color: var(--spatial-muted);
  font-size: 0.76rem;
  line-height: 1.55;
}

.kioku-spatial__source-block {
  display: grid;
  gap: 10px;
  margin-top: 14px;
  padding: 12px;
  border: 1px solid var(--spatial-line);
  border-radius: 16px;
  background: rgba(6, 18, 12, 0.7);
}

.kioku-spatial__source-block h4 {
  margin: 0;
  color: var(--spatial-bright);
  font-size: 0.95rem;
}

.kioku-spatial__source-block > p,
.kioku-spatial__viewer > p {
  margin: 0;
  color: var(--spatial-muted);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.kioku-spatial__source-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  text-align: left;
}

.kioku-spatial__source-link small {
  display: block;
  margin-top: 4px;
  color: var(--spatial-muted);
}

.kioku-spatial__modal-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 14px;
}

.kioku-spatial__viewer {
  display: grid;
  gap: 10px;
}

.kioku-spatial__viewer pre {
  max-height: 240px;
  margin: 0;
  padding: 10px;
  overflow: auto;
  border: 1px solid rgba(111, 255, 179, 0.14);
  border-radius: 12px;
  background: rgba(2, 8, 5, 0.92);
  color: var(--spatial-text);
  font: 0.78rem/1.5 var(--kioku-mono);
  white-space: pre-wrap;
  word-break: break-word;
}

.kioku-principles { padding: clamp(5rem, 10vw, 10rem) clamp(2rem, 6vw, 7rem); border-top: 1px solid var(--kioku-line); }
.kioku-principles__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: clamp(5rem, 9vw, 9rem); border-top: 1px solid var(--kioku-line); }
.kioku-principles article { min-height: 24rem; padding: 2rem; border-right: 1px solid var(--kioku-line); }
.kioku-principles article:last-child { border-right: 0; }
.kioku-principles h3 { max-width: 15rem; margin-top: 6rem; color: var(--kioku-ink); font-family: var(--kioku-serif); font-size: clamp(2.2rem, 3.4vw, 3.7rem); font-weight: 400; line-height: 0.98; }
.kioku-principles article p { max-width: 23rem; margin-top: 1.5rem; color: var(--kioku-green-soft); font-size: 0.8rem; line-height: 1.65; }

.kioku-coda { position: relative; min-height: 48rem; padding: clamp(5rem, 9vw, 9rem) clamp(2rem, 6vw, 7rem); overflow: hidden; border-top: 1px solid var(--kioku-line); border-bottom: 1px solid var(--kioku-line); }
.kioku-coda h2 { position: relative; z-index: 1; max-width: 75rem; margin-top: 4rem; }
.kioku-coda > p:not(.kioku-section-number) { position: relative; z-index: 1; max-width: 42rem; margin-top: 3rem; color: var(--kioku-green-soft); font-family: Helvetica, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif; font-size: clamp(1.25rem, 2vw, 2rem); font-weight: 400; letter-spacing: -0.018em; line-height: 1.3; }
.kioku-coda__mark { position: absolute; right: -0.05em; bottom: -0.28em; display: flex; color: rgba(97, 245, 164, 0.055); font-family: var(--kioku-serif); font-size: clamp(18rem, 46vw, 48rem); line-height: 0.72; white-space: nowrap; }

@media (max-width: 980px) {
  .kioku-hero { grid-template-columns: 3.25rem 1fr; }
  .kioku-hero__copy { min-height: 46rem; }
  .kioku-hero__media { grid-column: 1 / -1; min-height: min(92vw, 46rem); border-top: 1px solid var(--kioku-line); border-left: 0; }
  .kioku-thesis, .kioku-section-heading { grid-template-columns: 1fr; }
  .kioku-pipeline ol, .kioku-principles__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kioku-pipeline li:nth-child(2) { border-right: 0; }
  .kioku-pipeline li:nth-child(n + 3) { border-top: 1px solid var(--kioku-line); }
  .kioku-atlas__copy { grid-template-columns: 1fr 1fr; }
  .kioku-atlas__copy .kioku-section-number { grid-column: 1 / -1; }
  .kioku-timeline__toolbar { grid-template-columns: 1fr 1fr; }
  .kioku-timeline__zoom { grid-column: 1 / -1; }
  .kioku-spatial__status { min-width: 9rem; }
  .kioku-spatial__status + .kioku-spatial__status { min-width: 12rem; }
}

@media (max-width: 640px) {
  .kioku-main { padding-bottom: 7rem; }
  .kioku-hero, .kioku-thesis, .kioku-pipeline, .kioku-atlas, .kioku-principles, .kioku-coda { border-right: 0; border-left: 0; }
  .kioku-hero__copy { min-height: 40rem; padding: 3rem 1.25rem; }
  .kioku-hero h1 { font-size: clamp(6rem, 28vw, 9rem); }
  .kioku-columns, .kioku-pipeline ol, .kioku-principles__grid { grid-template-columns: 1fr; }
  .kioku-pipeline li { min-height: 15rem; border-right: 0; border-bottom: 1px solid var(--kioku-line); }
  .kioku-pipeline li:nth-child(n + 3) { border-top: 0; }
  .kioku-pipeline li:last-child { border-bottom: 0; }
  .kioku-pipeline li::before { display: none; }
  .kioku-pipeline strong { margin-top: 2.5rem; }
  .kioku-atlas__copy { grid-template-columns: 1fr; }
  .kioku-atlas__copy .kioku-section-number { grid-column: auto; }
  .kioku-timeline { margin: 0; border-right: 0; border-left: 0; }
  .kioku-timeline__toolbar { grid-template-columns: 1fr; }
  .kioku-timeline__zoom { grid-column: auto; flex-wrap: wrap; }
  .kioku-timeline__zoom label { flex: 1 1 7rem; }
  .kioku-timeline__zoom input { width: 100%; }
  .kioku-timeline__instructions span:nth-child(2) { display: none; }
  .kioku-timeline__viewport { height: 39rem; }
  .kioku-timeline__legend { flex-wrap: wrap; }
  .kioku-timeline__legend span:last-child { width: 100%; margin-left: 0; }
  .kioku-memory { width: 11rem; min-height: 7rem; }
  .kioku-spatial { min-height: 42rem; margin: 0; border-right: 0; border-left: 0; }
  .kioku-spatial__canvas { height: 42rem; }
  .kioku-spatial__controls { padding: 8px; }
  .kioku-spatial__controls input[type='search'] { min-width: 100%; }
  .kioku-spatial__controls select,
  .kioku-spatial__toggle,
  .kioku-spatial__controls button { font-size: 0.66rem; }
  .kioku-spatial__identity { align-items: flex-start; padding: 10px 8px; }
  .kioku-spatial__identity h3 { font-size: 1.3rem; }
  .kioku-spatial__status { display: none; }
  .kioku-spatial__help { right: 0.75rem; bottom: 0.75rem; gap: 0.45rem 0.8rem; }
  .kioku-spatial__notice { right: 0.75rem; bottom: 3.4rem; left: auto; max-width: 15rem; text-align: right; }
  .kioku-spatial__modal-shell,
  .kioku-spatial__viewer-shell { padding: 10px; }
  .kioku-spatial__modal,
  .kioku-spatial__viewer { width: calc(100vw - 20px); max-height: calc(100vh - 20px); border-radius: 14px; }
  .kioku-principles article { min-height: 20rem; border-right: 0; border-bottom: 1px solid var(--kioku-line); }
  .kioku-principles article:last-child { border-bottom: 0; }
  .kioku-principles h3 { margin-top: 4rem; }
}

@media (prefers-reduced-motion: reduce) {
  .kioku-memory { transition: none; }
  .kioku-spatial__loading span { animation: none; }
}