:root {
  --ink: #0c0e0c;
  --ink-2: #11140f;
  --panel: #151813;
  --panel-2: #1b1f18;
  --paper: #eee5d2;
  --paper-soft: #d8cfbd;
  --muted: #989281;
  --muted-2: #6f6b5e;
  --gold: #c7a35a;
  --gold-2: #9e7d43;
  --gold-dim: #665331;
  --red: #c43b33;
  --red-bright: #e24b42;
  --line: rgba(232, 220, 196, 0.12);
  --line-strong: rgba(232, 220, 196, 0.22);
  --green: #24352b;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  --sans: "Microsoft YaHei", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --serif: "Songti SC", "STSong", "SimSun", "Times New Roman", serif;
}

* { box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  background: var(--ink);
}

body {
  color: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

button:focus-visible,
a:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 3px;
}

#app {
  position: relative;
  display: grid;
  grid-template-columns: 318px minmax(0, 1fr);
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--ink);
}

/* ============================================================
   ARCHIVE RAIL
   ============================================================ */
.rail {
  position: relative;
  z-index: 30;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 26px 22px 16px;
  border-right: 1px solid var(--line);
  background:
    radial-gradient(circle at 15% -10%, rgba(199, 163, 90, 0.10), transparent 34%),
    linear-gradient(155deg, #181b15 0%, #11140f 48%, #0d100d 100%);
  overflow: hidden;
}

.rail::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background: repeating-linear-gradient(135deg, transparent 0 7px, rgba(255,255,255,0.018) 7px 8px);
}

.rail::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--red) 0 36%, var(--gold-2) 36% 52%, transparent 52%);
}

.rail-scroll {
  position: relative;
  z-index: 1;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  padding-right: 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--gold-dim) transparent;
}

.rail-scroll::-webkit-scrollbar { width: 5px; }
.rail-scroll::-webkit-scrollbar-track { background: transparent; }
.rail-scroll::-webkit-scrollbar-thumb { background: var(--gold-dim); }

.brand-head {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin-bottom: 18px;
}

.crest {
  position: relative;
  flex: 0 0 50px;
  width: 50px;
  height: 50px;
  margin-top: 5px;
  border: 1px solid var(--gold-dim);
  transform: rotate(45deg);
}

.crest::before,
.crest::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.crest::before {
  inset: 5px;
  border: 1px solid rgba(199, 163, 90, 0.32);
}

.crest::after {
  top: 50%;
  left: -5px;
  width: calc(100% + 10px);
  height: 1px;
  background: rgba(196, 59, 51, 0.75);
}

.crest span {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  transform: rotate(-45deg);
  color: var(--paper);
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 700;
}

.brand-copy { min-width: 0; }

.eyebrow {
  margin: 0 0 7px;
  color: var(--gold);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 0.19em;
  line-height: 1.5;
  text-transform: uppercase;
}

.brand-title {
  margin: 0;
  color: var(--paper);
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.02;
}

.brand-title em {
  color: var(--red-bright);
  font-style: normal;
}

.brand-sub {
  margin: 7px 0 0;
  color: var(--muted);
  font-family: Georgia, serif;
  font-size: 9px;
  letter-spacing: 0.22em;
}

.meta-strip {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr 1.3fr;
  gap: 1px;
  margin: 2px 0 15px;
  background: var(--line);
  border: 1px solid var(--line);
}

.meta-cell {
  min-width: 0;
  padding: 8px 8px 7px;
  background: rgba(15, 18, 13, 0.82);
}

.meta-cell b {
  display: block;
  color: var(--paper-soft);
  font-family: Georgia, serif;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.meta-cell span {
  display: block;
  margin-top: 4px;
  color: var(--muted-2);
  font-size: 7.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.rule {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 4px 0 14px;
}

.rule::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--red);
  flex: none;
}

.rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.section-kicker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-kicker span:last-child {
  color: var(--gold-dim);
  font-family: Georgia, serif;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.room-groups { padding-bottom: 12px; }

.room-group { margin-bottom: 13px; }

.zone-title {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0 0 6px;
  color: var(--muted-2);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.17em;
}

.zone-title::after {
  content: "";
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, var(--line), transparent);
}

.room-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
}

.room-chip {
  display: flex;
  align-items: center;
  min-width: 0;
  height: 30px;
  padding: 0 7px;
  border: 1px solid rgba(232, 220, 196, 0.075);
  background: rgba(255, 255, 255, 0.018);
  color: var(--paper-soft);
  text-align: left;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.room-chip .idx {
  flex: 0 0 18px;
  color: var(--gold-dim);
  font-family: Georgia, serif;
  font-size: 8px;
  letter-spacing: 0.04em;
  transition: color 160ms ease;
}

.room-chip .nm {
  overflow: hidden;
  font-size: 10.5px;
  letter-spacing: 0.03em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.room-chip:hover {
  border-color: rgba(199, 163, 90, 0.55);
  background: rgba(199, 163, 90, 0.08);
}

.room-chip.is-active {
  border-color: rgba(196, 59, 51, 0.8);
  background: linear-gradient(90deg, rgba(196, 59, 51, 0.22), rgba(196, 59, 51, 0.06));
  color: var(--paper);
}

.room-chip.is-active .idx { color: var(--red-bright); }

.legend {
  margin: 2px 0 15px;
  padding: 10px 11px;
  border-left: 2px solid var(--gold-dim);
  background: rgba(255, 255, 255, 0.018);
  color: var(--muted);
  font-size: 9px;
  line-height: 1.7;
}

.legend-row {
  display: flex;
  align-items: center;
  gap: 7px;
}

.legend-mark {
  width: 12px;
  height: 3px;
  flex: none;
  background: var(--red);
  box-shadow: 0 0 8px rgba(196, 59, 51, 0.4);
}

.legend-row + .legend-row { margin-top: 4px; }

.legend .dim { color: var(--muted-2); }

.rail-footer {
  position: relative;
  z-index: 1;
  flex: none;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.rail-footer p {
  margin: 0;
  color: var(--muted-2);
  font-size: 8px;
  letter-spacing: 0.06em;
  line-height: 1.7;
}

.rail-footer strong {
  color: var(--muted);
  font-weight: 400;
}

/* ============================================================
   STAGE
   ============================================================ */
.stage {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(ellipse at 48% 40%, rgba(116, 103, 72, 0.22) 0%, rgba(42, 47, 36, 0.18) 32%, transparent 64%),
    radial-gradient(ellipse at 62% 84%, rgba(57, 78, 61, 0.20), transparent 52%),
    linear-gradient(145deg, #141712 0%, #0d100d 47%, #080a08 100%);
}

.stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.36;
  background-image:
    linear-gradient(rgba(232, 220, 196, 0.027) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 220, 196, 0.027) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(ellipse at 48% 44%, black 0%, rgba(0,0,0,0.78) 44%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at 48% 44%, black 0%, rgba(0,0,0,0.78) 44%, transparent 78%);
}

.stage::after {
  content: "01";
  position: absolute;
  right: -18px;
  bottom: -78px;
  z-index: 0;
  color: rgba(232, 220, 196, 0.026);
  font-family: Georgia, serif;
  font-size: clamp(240px, 30vw, 460px);
  line-height: 0.75;
  letter-spacing: -0.09em;
  pointer-events: none;
  user-select: none;
}

#scene {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
}

#scene.is-dragging { cursor: grabbing; }

.grain {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: 0.10;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

.hud-top {
  position: absolute;
  top: 23px;
  left: 28px;
  z-index: 10;
  pointer-events: none;
}

.hud-top .eyebrow {
  margin-bottom: 6px;
  color: var(--gold-2);
}

.hud-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.hud-title {
  margin: 0;
  color: var(--paper);
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.hud-mark {
  display: inline-block;
  width: 5px;
  height: 5px;
  background: var(--red);
  box-shadow: 0 0 12px rgba(196, 59, 51, 0.6);
}

.hud-sub {
  margin: 5px 0 0;
  color: var(--muted-2);
  font-size: 8px;
  letter-spacing: 0.13em;
}

.toolbar {
  position: absolute;
  top: 20px;
  right: 24px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px;
  border: 1px solid var(--line);
  background: rgba(12, 14, 11, 0.70);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.22);
}

.tool-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 9px;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 9.5px;
  letter-spacing: 0.05em;
  white-space: nowrap;
  transition: color 150ms ease, background 150ms ease, border-color 150ms ease;
}

.tool-btn svg {
  width: 14px;
  height: 14px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.45;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tool-btn:hover {
  color: var(--paper);
  background: rgba(232, 220, 196, 0.06);
}

.tool-btn.is-active {
  color: var(--gold);
  border-color: rgba(199, 163, 90, 0.30);
  background: rgba(199, 163, 90, 0.08);
}

.tool-divider {
  width: 1px;
  height: 18px;
  margin: 0 2px;
  background: var(--line);
}

.camera-readout {
  position: absolute;
  top: 68px;
  right: 27px;
  z-index: 10;
  color: var(--muted-2);
  font-family: Georgia, serif;
  font-size: 8px;
  letter-spacing: 0.15em;
  pointer-events: none;
  text-align: right;
}

.camera-readout b {
  color: var(--muted);
  font-weight: 400;
}

.labels {
  position: absolute;
  inset: 0;
  z-index: 9;
  pointer-events: none;
  overflow: hidden;
}

.scene-label {
  --s: 1;
  position: absolute;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 7px 3px 5px;
  border: 1px solid rgba(232, 220, 196, 0.20);
  border-radius: 1px;
  background: rgba(13, 16, 12, 0.67);
  color: rgba(238, 229, 210, 0.88);
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 1.2;
  white-space: nowrap;
  pointer-events: auto;
  cursor: pointer;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  transform: translate(-50%, -50%) scale(var(--s));
  transform-origin: center;
  transition: background 150ms ease, color 150ms ease, border-color 150ms ease, opacity 180ms ease;
  user-select: none;
}

.scene-label::before {
  content: "";
  width: 4px;
  height: 4px;
  flex: none;
  border-radius: 50%;
  background: var(--a, var(--gold));
  box-shadow: 0 0 7px var(--a, var(--gold));
}

.scene-label:hover {
  --s: 1.10;
  z-index: 3;
  border-color: var(--a, var(--gold));
  background: rgba(238, 229, 210, 0.94);
  color: #13150f;
}

.scene-label.is-selected {
  --s: 1.08;
  z-index: 2;
  border-color: var(--a, var(--gold));
  background: var(--paper);
  color: #13150f;
  box-shadow: 0 4px 20px rgba(0,0,0,0.32);
}

.scene-label.is-vertical {
  writing-mode: vertical-rl;
  text-orientation: upright;
  padding: 7px 3px;
  letter-spacing: 0.12em;
}

.scene-label.is-vertical::before {
  width: 3px;
  height: 3px;
}

.scene-label.is-hidden { display: none; }

.labels.is-off .scene-label { display: none; }

.room-card {
  position: absolute;
  right: 24px;
  bottom: 24px;
  z-index: 18;
  width: 356px;
  padding: 18px 19px 16px 21px;
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--room-accent, var(--red));
  background:
    linear-gradient(135deg, rgba(255,255,255,0.032), transparent 45%),
    rgba(14, 17, 12, 0.91);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 1;
  transform: translateY(0);
  transition: opacity 220ms ease, transform 260ms cubic-bezier(.2,.8,.2,1);
}

.room-card.is-hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px);
}

.card-topline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.card-index {
  color: var(--room-accent, var(--gold));
  font-family: Georgia, serif;
  font-size: 9px;
  letter-spacing: 0.16em;
}

.card-close {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin: -4px -5px 0 0;
  border: 1px solid transparent;
  color: var(--muted-2);
  font-size: 16px;
  line-height: 1;
}

.card-close:hover {
  border-color: var(--line);
  color: var(--paper);
}

.room-card h2 {
  margin: 4px 0 2px;
  color: var(--paper);
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.07em;
  line-height: 1.15;
}

.card-en {
  color: var(--muted-2);
  font-family: Georgia, serif;
  font-size: 8px;
  letter-spacing: 0.18em;
}

.card-desc {
  margin: 13px 0 12px;
  color: var(--paper-soft);
  font-size: 11.5px;
  letter-spacing: 0.025em;
  line-height: 1.8;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 14px;
}

.card-tag {
  padding: 4px 7px;
  border: 1px solid rgba(199, 163, 90, 0.23);
  color: var(--gold);
  font-size: 8px;
  letter-spacing: 0.08em;
}

.card-actions {
  display: flex;
  gap: 7px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.card-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 29px;
  padding: 0 10px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 0.06em;
  transition: border-color 150ms ease, color 150ms ease, background 150ms ease;
}

.card-action:hover {
  border-color: var(--gold-dim);
  color: var(--paper);
  background: rgba(199, 163, 90, 0.06);
}

.card-action.primary {
  border-color: rgba(196, 59, 51, 0.45);
  color: var(--paper-soft);
}

.card-action.primary:hover {
  border-color: var(--red);
  background: rgba(196, 59, 51, 0.13);
}

.help-pill {
  position: absolute;
  left: 27px;
  bottom: 24px;
  z-index: 9;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border: 1px solid rgba(232, 220, 196, 0.09);
  background: rgba(12, 14, 11, 0.55);
  color: var(--muted-2);
  font-size: 8.5px;
  letter-spacing: 0.06em;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  pointer-events: none;
}

.help-pill .dot {
  width: 3px;
  height: 3px;
  background: var(--red);
}

.compass {
  position: absolute;
  left: 28px;
  bottom: 61px;
  z-index: 9;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(232, 220, 196, 0.13);
  border-radius: 50%;
  pointer-events: none;
}

.compass::before,
.compass::after {
  content: "";
  position: absolute;
  background: rgba(232, 220, 196, 0.14);
}

.compass::before { top: 50%; left: 5px; width: calc(100% - 10px); height: 1px; }
.compass::after { left: 50%; top: 5px; height: calc(100% - 10px); width: 1px; }

.compass-needle {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 1px;
  height: 18px;
  background: linear-gradient(var(--red) 0 48%, rgba(232,220,196,0.35) 48%);
  transform-origin: 50% 13px;
  transform: translateX(-50%) rotate(-12deg);
}

.compass-n {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--gold-dim);
  font-family: Georgia, serif;
  font-size: 7px;
}

.scale-bar {
  position: absolute;
  left: 50%;
  bottom: 22px;
  z-index: 9;
  width: 108px;
  transform: translateX(-50%);
  pointer-events: none;
}

.scale-bar .bar {
  height: 4px;
  border: 1px solid rgba(232, 220, 196, 0.30);
  border-top: 0;
}

.scale-bar .ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  color: var(--muted-2);
  font-family: Georgia, serif;
  font-size: 7px;
}

.menu-button {
  position: absolute;
  top: 20px;
  left: 16px;
  z-index: 25;
  display: none;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--line);
  background: rgba(12, 14, 11, 0.72);
  backdrop-filter: blur(10px);
}

.menu-button span {
  display: block;
  width: 14px;
  height: 1px;
  background: var(--paper);
  box-shadow: 0 4px 0 var(--paper), 0 -4px 0 var(--paper);
}

/* ============================================================
   BOOT / OPENING
   ============================================================ */
.boot {
  position: absolute;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 50% 42%, rgba(199, 163, 90, 0.09), transparent 32%),
    #0b0d0a;
  transition: opacity 650ms ease, visibility 650ms ease;
}

.boot.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.boot-inner {
  width: min(360px, 76vw);
  text-align: center;
}

.boot-line {
  width: 48px;
  height: 2px;
  margin: 0 auto 18px;
  background: var(--red);
  box-shadow: 0 0 22px rgba(196, 59, 51, 0.55);
}

.boot-kicker {
  margin: 0;
  color: var(--gold-2);
  font-family: Georgia, serif;
  font-size: 8px;
  letter-spacing: 0.24em;
}

.boot h1 {
  margin: 8px 0 4px;
  color: var(--paper);
  font-family: var(--serif);
  font-size: 54px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.boot-sub {
  margin: 0 0 26px;
  color: var(--muted-2);
  font-family: Georgia, serif;
  font-size: 8px;
  letter-spacing: 0.26em;
}

.boot-progress {
  position: relative;
  height: 1px;
  background: rgba(232, 220, 196, 0.12);
  overflow: hidden;
}

.boot-progress::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--gold), var(--red));
  transform: translateX(-100%);
  animation: bootProgress 1.1s cubic-bezier(.3,.7,.2,1) forwards;
}

.boot-small {
  display: block;
  margin-top: 11px;
  color: var(--muted-2);
  font-size: 7px;
  letter-spacing: 0.18em;
}

@keyframes bootProgress {
  to { transform: translateX(0); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1180px) {
  #app { grid-template-columns: 286px minmax(0, 1fr); }
  .rail { padding-left: 18px; padding-right: 18px; }
  .brand-title { font-size: 34px; }
  .room-card { width: 330px; }
  .tool-btn span { display: none; }
  .tool-btn { padding: 0 8px; }
}

@media (max-width: 860px) {
  #app { grid-template-columns: 1fr; }
  .rail {
    position: absolute;
    inset: 0 auto 0 0;
    z-index: 40;
    width: min(86vw, 320px);
    transform: translateX(-102%);
    transition: transform 280ms cubic-bezier(.2,.8,.2,1);
    box-shadow: 30px 0 60px rgba(0,0,0,0.42);
  }
  .rail.is-open { transform: translateX(0); }
  .menu-button { display: grid; }
  .hud-top { left: 64px; }
  .toolbar { top: 18px; right: 14px; }
  .camera-readout { right: 18px; top: 64px; }
  .room-card { right: 14px; bottom: 14px; }
}

@media (max-width: 620px) {
  .toolbar { top: 70px; right: 10px; flex-direction: column; padding: 3px; }
  .tool-divider { width: 18px; height: 1px; margin: 2px 0; }
  .camera-readout { display: none; }
  .hud-top { top: 18px; left: 62px; }
  .hud-title { font-size: 16px; }
  .hud-sub { font-size: 7px; }
  .help-pill, .compass, .scale-bar { display: none; }
  .room-card {
    left: 12px;
    right: 12px;
    bottom: 12px;
    width: auto;
    max-height: 34vh;
    overflow-y: auto;
    padding: 15px 16px 13px 18px;
  }
  .room-card h2 { font-size: 20px; }
  .card-desc { margin-top: 10px; font-size: 11px; }
  .scene-label { font-size: 9px; padding: 2px 5px 2px 4px; }
  .boot h1 { font-size: 42px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   MONOKUMA MOTIFS / PROTOTYPE EXTENSIONS
   ============================================================ */
.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

/* The crest becomes a clean circular bear seal. */
.crest {
  width: 54px;
  height: 54px;
  flex-basis: 54px;
  border-radius: 50%;
  border-color: rgba(199, 163, 90, 0.52);
  transform: none;
  background:
    radial-gradient(circle at 50% 44%, rgba(238, 229, 210, 0.08), transparent 62%),
    rgba(8, 10, 8, 0.30);
}

.crest::before {
  inset: 3px;
  border-radius: 50%;
  border-color: rgba(199, 163, 90, 0.18);
}

.crest::after {
  top: 50%;
  left: -6px;
  width: calc(100% + 12px);
  height: 1px;
  border: 0;
  background: rgba(196, 59, 51, 0.62);
  transform: rotate(-35deg);
}

.crest-bear {
  position: absolute;
  inset: 5px;
  width: calc(100% - 10px);
  height: calc(100% - 10px);
  filter: drop-shadow(0 2px 7px rgba(0,0,0,.45));
}

.surveillance-line {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 12px;
  color: var(--muted-2);
  font-family: Georgia, serif;
  font-size: 7.5px;
  letter-spacing: 0.12em;
  pointer-events: none;
}

.surveillance-line b {
  color: var(--paper-soft);
  font-weight: 400;
  letter-spacing: 0.06em;
}

.surveillance-live {
  display: inline-flex;
  align-items: center;
  height: 15px;
  padding: 0 5px;
  border: 1px solid rgba(196, 59, 51, 0.45);
  color: var(--red-bright);
  font-size: 6.5px;
  letter-spacing: 0.15em;
}

.rec-dot,
.live-dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  flex: none;
  border-radius: 50%;
  background: var(--red-bright);
  box-shadow: 0 0 9px rgba(226, 75, 66, 0.75);
  animation: recBlink 1.7s steps(2, end) infinite;
}

@keyframes recBlink {
  0%, 55% { opacity: 1; }
  56%, 100% { opacity: 0.28; }
}

.tool-btn.is-dim {
  opacity: 0.28;
  pointer-events: none;
}

/* ============================================================
   CAMERA FEED
   ============================================================ */
.cam-feed {
  position: absolute;
  left: 26px;
  bottom: 24px;
  z-index: 17;
  width: 294px;
  border: 1px solid rgba(218, 202, 171, 0.25);
  background: #080a08;
  box-shadow: 0 20px 50px rgba(0,0,0,0.48);
  opacity: 1;
  transform: translateY(0);
  transition: opacity 210ms ease, transform 230ms ease;
}

.cam-feed.is-hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px);
}

.cam-feed header {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 27px;
  padding: 0 8px;
  border-bottom: 1px solid rgba(218, 202, 171, 0.18);
  color: var(--muted);
  font-family: Georgia, serif;
  font-size: 7.5px;
  letter-spacing: 0.08em;
}

.cam-feed header b {
  min-width: 0;
  overflow: hidden;
  color: var(--paper-soft);
  font-weight: 400;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cam-feed header time {
  margin-left: auto;
  color: var(--red-bright);
  font-variant-numeric: tabular-nums;
}

.cam-view {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #020302;
}

.cam-view canvas {
  display: block;
  width: 100%;
  height: 100%;
  filter: contrast(1.08) sepia(0.06);
}

.cam-scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background: repeating-linear-gradient(0deg, transparent 0 2px, rgba(0, 0, 0, 0.52) 2px 3px);
  mix-blend-mode: multiply;
}

.cam-scan::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 35%;
  top: -40%;
  background: linear-gradient(180deg, transparent, rgba(221, 228, 211, 0.08), transparent);
  animation: camSweep 5.2s linear infinite;
}

@keyframes camSweep {
  to { transform: translateY(420%); }
}

.cam-bear {
  position: absolute;
  right: 11px;
  bottom: 24px;
  width: 31px;
  height: 31px;
  opacity: 0.15;
  pointer-events: none;
}

.cam-corner {
  position: absolute;
  width: 13px;
  height: 13px;
  pointer-events: none;
  border-color: rgba(238, 229, 210, 0.38);
  border-style: solid;
}
.cam-corner.tl { top: 8px; left: 8px; border-width: 1px 0 0 1px; }
.cam-corner.tr { top: 8px; right: 8px; border-width: 1px 1px 0 0; }
.cam-corner.bl { bottom: 8px; left: 8px; border-width: 0 0 1px 1px; }
.cam-corner.br { bottom: 8px; right: 8px; border-width: 0 1px 1px 0; }

.cam-view-meta {
  position: absolute;
  left: 11px;
  right: 50px;
  bottom: 9px;
  display: flex;
  justify-content: space-between;
  color: rgba(238, 229, 210, 0.44);
  font-family: Georgia, serif;
  font-size: 6px;
  letter-spacing: 0.11em;
  pointer-events: none;
}

.cam-feed footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 24px;
  padding: 0 8px;
  border-top: 1px solid rgba(218, 202, 171, 0.14);
  color: var(--muted-2);
  font-family: Georgia, serif;
  font-size: 6px;
  letter-spacing: 0.1em;
}

.cam-feed footer span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.stage.cam-on .help-pill,
.stage.cam-on .compass,
.stage.cam-on .scale-bar {
  opacity: 0;
  pointer-events: none;
}

/* ============================================================
   FIRST-PERSON UI
   ============================================================ */
.fp-ui {
  position: absolute;
  inset: 0;
  z-index: 14;
  display: none;
  pointer-events: none;
}

.stage.is-fp .fp-ui { display: block; }

.stage.is-fp .labels,
.stage.is-fp .room-card,
.stage.is-fp .help-pill,
.stage.is-fp .compass,
.stage.is-fp .scale-bar,
.stage.is-fp .camera-readout {
  opacity: 0;
  pointer-events: none;
}

.stage.is-fp #scene {
  cursor: crosshair;
}

.fp-vignette {
  position: absolute;
  inset: 0;
  z-index: 11;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(ellipse at 50% 48%, transparent 38%, rgba(0, 0, 0, 0.32) 70%, rgba(0, 0, 0, 0.74) 100%);
  transition: opacity 300ms ease;
}

.fp-scanlines {
  position: absolute;
  inset: 0;
  z-index: 12;
  pointer-events: none;
  opacity: 0;
  background: repeating-linear-gradient(0deg, transparent 0 3px, rgba(0,0,0,.12) 3px 4px);
  mix-blend-mode: multiply;
}

.stage.is-fp .fp-vignette { opacity: 1; }
.stage.is-fp .fp-scanlines { opacity: 0.65; }

.fp-crosshair {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 46px;
  height: 46px;
  transform: translate(-50%, -50%);
  opacity: 0.9;
}

.fp-crosshair .ring {
  position: absolute;
  inset: 3px;
  border: 1px solid rgba(238, 229, 210, 0.48);
  border-radius: 50%;
  box-shadow: 0 0 14px rgba(0,0,0,.24);
}

.fp-crosshair .pupil {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red-bright);
  box-shadow: 0 0 10px rgba(226, 75, 66, 0.8);
  transform: translate(-50%, -50%);
}

.fp-crosshair .slash {
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(238, 229, 210, 0.12);
  border-radius: 50%;
}

.fp-crosshair .slash::before,
.fp-crosshair .slash::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 58px;
  height: 1px;
  background: rgba(238, 229, 210, 0.16);
  transform: translate(-50%, -50%);
}
.fp-crosshair .slash::after { transform: translate(-50%, -50%) rotate(90deg); }

.fp-room {
  position: absolute;
  left: 50%;
  bottom: 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 210px;
  padding: 8px 22px 9px;
  transform: translateX(-50%);
  border-top: 1px solid rgba(226, 75, 66, 0.60);
  background: linear-gradient(180deg, rgba(10,12,9,.72), rgba(10,12,9,.30));
  text-align: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.fp-room-kicker {
  color: var(--muted-2);
  font-family: Georgia, serif;
  font-size: 6.5px;
  letter-spacing: 0.20em;
}

.fp-room b {
  color: var(--paper);
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0.12em;
}

.fp-room > span:last-child {
  color: var(--gold-dim);
  font-family: Georgia, serif;
  font-size: 6.5px;
  letter-spacing: 0.16em;
}

.fp-controls {
  position: absolute;
  left: 25px;
  bottom: 22px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border: 1px solid rgba(232, 220, 196, 0.12);
  background: rgba(9, 11, 8, 0.62);
  color: var(--muted);
  font-size: 8px;
  letter-spacing: 0.07em;
  backdrop-filter: blur(8px);
}

.fp-controls b {
  color: var(--paper-soft);
  font-family: Georgia, serif;
  font-weight: 400;
  letter-spacing: 0.12em;
}

.fp-controls i {
  width: 2px;
  height: 2px;
  background: var(--red);
}

/* ============================================================
   BOOT BEAR
   ============================================================ */
.boot-bear {
  width: 62px;
  height: 62px;
  margin: 0 auto 15px;
  opacity: 0.95;
  filter: drop-shadow(0 0 20px rgba(196, 59, 51, 0.22));
}

.boot-bear svg {
  width: 100%;
  height: 100%;
}

.boot-kicker { color: var(--red-bright); }

/* ============================================================
   RESPONSIVE EXTRAS
   ============================================================ */
@media (max-width: 1180px) {
  .cam-feed { width: 260px; }
  .surveillance-line { font-size: 6.8px; }
}

@media (max-width: 860px) {
  .cam-feed {
    left: 14px;
    bottom: 14px;
    width: 230px;
  }
  .cam-feed footer { display: none; }
  .surveillance-line { display: none; }
  .stage.is-fp .cam-feed { display: none; }
}

@media (max-width: 620px) {
  .toolbar { max-height: calc(100vh - 130px); overflow-y: auto; }
  .fp-controls { left: 12px; bottom: 12px; font-size: 7px; }
  .fp-room { bottom: 62px; min-width: 170px; }
  .cam-feed { width: 190px; bottom: 70px; }
  .cam-feed header { height: 22px; font-size: 6px; }
  .cam-view-meta { display: none; }
}

/* ============================================================
   MOBILE DRAWER / TOUCH FIXES
   ============================================================ */
.rail-close {
  display: none;
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 3;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid rgba(232, 220, 196, 0.22);
  color: var(--paper-soft);
  background: rgba(8, 10, 8, 0.65);
  font-size: 20px;
  line-height: 1;
}

.rail-close:hover {
  border-color: var(--gold-dim);
  color: var(--paper);
}

.rail-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 35;
  background: rgba(4, 6, 4, 0.48);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

@media (max-width: 860px) {
  .rail-close { display: grid; }
  .rail.is-open + .rail-backdrop { display: block; }
}

@media (max-width: 620px) {
  .rail-scroll { padding-right: 0; }
  .rail { padding-top: 22px; }
  .brand-head { padding-right: 22px; }
  .hud-top { max-width: calc(100vw - 84px); }
  .hud-sub { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .scene-label { max-width: 104px; overflow: hidden; text-overflow: ellipsis; }
}