/* SPDX-License-Identifier: GPL-2.0-or-later */

:root {
  --bg: #070b14;
  --bg-2: #0d1524;
  --ink: #e8eef7;
  --muted: #8ba0bb;
  --line: #3f6f96;
  --line-soft: rgba(90, 140, 180, 0.42);
  --gold: #f0c37a;
  --gold-soft: rgba(240, 195, 122, 0.55);
  --panel: rgba(13, 21, 36, 0.86);
  --panel-border: rgba(120, 160, 200, 0.22);
  --serif: "Songti SC", "SimSun", "Noto Serif SC", "Source Han Serif SC", serif;
  --sans: "Segoe UI", "Microsoft YaHei", -apple-system, system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: radial-gradient(circle at 38% 46%, var(--bg-2) 0%, var(--bg) 62%);
  color: var(--ink);
  font-family: var(--sans);
  overflow: hidden;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body { display: flex; }

#stage {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

#sky {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}
#sky.dragging { cursor: grabbing; }

.map-controls {
  position: absolute;
  top: calc(14px + env(safe-area-inset-top));
  right: calc(14px + env(safe-area-inset-right));
  z-index: 7;
  display: none;
  gap: 6px;
}
.map-controls button {
  width: 44px;
  height: 44px;
  padding: 0;
  color: rgba(224, 235, 247, 0.92);
  background: rgba(6, 14, 25, 0.78);
  border: 1px solid rgba(151, 184, 214, 0.3);
  border-radius: 12px;
  font: 600 18px/1 var(--sans);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  backdrop-filter: blur(8px);
}
.map-controls button:nth-child(2) {
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.5px;
}
.map-controls button:active {
  transform: scale(0.95);
  background: rgba(45, 78, 111, 0.9);
}
body.story-mode .map-controls,
body.presentation-mode .map-controls { display: none !important; }

.stage-atmosphere {
  position: absolute;
  inset: -10%;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  transition: opacity 1.2s ease;
}
.stage-atmosphere i {
  position: absolute;
  display: block;
  border-radius: 50%;
  mix-blend-mode: screen;
  transform: translate3d(0, 0, 0);
}
.stage-atmosphere i:nth-child(1) {
  left: -16%;
  top: -20%;
  width: 74%;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(57, 111, 168, 0.17) 0%, rgba(29, 62, 104, 0.07) 44%, transparent 70%);
  animation: nebulaDriftA 86s ease-in-out infinite alternate;
}
.stage-atmosphere i:nth-child(2) {
  right: -15%;
  top: 6%;
  width: 58%;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(176, 132, 72, 0.10) 0%, rgba(94, 69, 47, 0.04) 46%, transparent 72%);
  animation: nebulaDriftB 104s ease-in-out infinite alternate;
}
.stage-atmosphere i:nth-child(3) {
  left: 18%;
  bottom: -32%;
  width: 64%;
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(41, 107, 118, 0.11) 0%, rgba(24, 63, 80, 0.04) 48%, transparent 72%);
  animation: nebulaDriftC 92s ease-in-out infinite alternate;
}
body.story-void .stage-atmosphere { opacity: 0.12; }

@keyframes nebulaDriftA {
  from { transform: translate3d(-1.5%, -1%, 0) scale(1); }
  to { transform: translate3d(2.5%, 2%, 0) scale(1.08); }
}
@keyframes nebulaDriftB {
  from { transform: translate3d(1%, 1.5%, 0) scale(1.04); }
  to { transform: translate3d(-2.5%, -2%, 0) scale(1); }
}
@keyframes nebulaDriftC {
  from { transform: translate3d(2%, 1%, 0) scale(1); }
  to { transform: translate3d(-2%, -1.5%, 0) scale(1.07); }
}

#hud {
  position: absolute; left: 18px; bottom: 16px;
  display: flex; flex-wrap: wrap; gap: 14px;
  max-width: calc(100% - 36px);
  padding: 8px 13px;
  font-size: 11.5px; color: var(--muted);
  background: rgba(6, 12, 21, 0.46);
  border: 1px solid rgba(120, 160, 200, 0.12);
  border-radius: 12px;
  backdrop-filter: blur(7px);
  pointer-events: none;
}
#hud b { color: var(--ink); font-weight: 600; }

#perfBadge {
  position: absolute;
  right: 14px;
  bottom: 12px;
  z-index: 5;
  padding: 4px 9px;
  color: rgba(190, 210, 231, 0.78);
  background: rgba(8, 16, 27, 0.72);
  border: 1px solid rgba(120, 160, 200, 0.18);
  border-radius: 999px;
  font-size: 10.5px;
  letter-spacing: 1px;
  pointer-events: none;
}
#perfBadge[hidden] { display: none; }

#panel {
  position: relative;
  flex: 0 0 336px;
  height: 100vh;
  min-height: 0;
  padding: 22px 20px 16px;
  background: var(--panel);
  border-left: 1px solid var(--panel-border);
  backdrop-filter: blur(10px);
  display: flex; flex-direction: column; gap: 16px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}
#panel::before {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(240, 195, 122, 0.34), transparent);
  pointer-events: none;
}
#panel > * { flex-shrink: 0; }
#panel > * { transition: opacity 0.3s ease; }

#panel header h1 {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 32px; font-weight: 600; letter-spacing: 5px;
}
#panel .sub { margin: 0; font-size: 12px; color: var(--muted); letter-spacing: 0.4px; }

.experience-actions { display: flex; flex-direction: column; gap: 8px; }
.primary-action {
  width: 100%;
  padding: 12px 14px;
  color: #172236;
  background: linear-gradient(135deg, #f3ce8c, #dca84e);
  border: 1px solid rgba(255, 230, 180, 0.72);
  border-radius: 9px;
  font: 700 14px var(--sans);
  letter-spacing: 1.2px;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(203, 155, 69, 0.18);
}
.primary-action:hover { filter: brightness(1.06); }
.tour-speed {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 8px 10px 7px;
  color: var(--muted);
  background: rgba(10, 24, 39, 0.56);
  border: 1px solid rgba(133, 171, 205, 0.18);
  border-radius: 8px;
}
.tour-speed-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  font-size: 11.5px;
  letter-spacing: 0.4px;
}
.tour-speed-title output {
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.tour-speed input[type="range"] {
  width: 100%;
  margin: 0;
}
.tour-speed-scale {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  color: rgba(160, 181, 204, 0.66);
  font-size: 9.5px;
  letter-spacing: 0.2px;
}
.quick-tour-entry {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 10px;
  color: rgba(214, 228, 241, 0.82);
  text-align: left;
  background: rgba(63, 111, 150, 0.08);
  border: 1px dashed rgba(133, 171, 205, 0.28);
  border-radius: 7px;
  cursor: pointer;
}
.quick-tour-entry span {
  font: 600 11.5px var(--sans);
  letter-spacing: 0.8px;
}
.quick-tour-entry small {
  color: rgba(160, 181, 204, 0.7);
  font-size: 9.5px;
  letter-spacing: 0.2px;
}
.quick-tour-entry:hover {
  color: var(--gold);
  border-color: rgba(240, 195, 122, 0.55);
  background: rgba(63, 111, 150, 0.18);
}
.experience-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.experience-secondary button {
  padding: 8px 9px;
  color: var(--ink);
  background: rgba(63, 111, 150, 0.12);
  border: 1px solid var(--panel-border);
  border-radius: 7px;
  font: 12px var(--sans);
  cursor: pointer;
}
.experience-secondary button:hover {
  color: var(--gold);
  border-color: var(--gold-soft);
  background: rgba(63, 111, 150, 0.24);
}

.mission-entry {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 12px;
  overflow: hidden;
  color: #f0d49d;
  text-align: left;
  background:
    linear-gradient(100deg, rgba(93, 67, 32, 0.3), rgba(27, 50, 73, 0.3));
  border: 1px solid rgba(226, 183, 103, 0.32);
  border-radius: 8px;
  cursor: pointer;
}
.mission-entry::before {
  content: "";
  position: absolute;
  inset: 4px;
  pointer-events: none;
  border: 1px solid rgba(240, 195, 122, 0.1);
  border-radius: 5px;
}
.mission-entry span {
  position: relative;
  font: 600 13px var(--serif);
  letter-spacing: 2px;
}
.mission-entry small {
  position: relative;
  color: rgba(203, 185, 151, 0.62);
  font-size: 9.5px;
  letter-spacing: 0.4px;
}
.mission-entry:hover {
  color: #fff0cc;
  border-color: rgba(240, 195, 122, 0.6);
  background:
    linear-gradient(100deg, rgba(113, 81, 38, 0.42), rgba(34, 61, 88, 0.42));
}

#detail {
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 14px 14px 12px;
  background: rgba(10, 17, 30, 0.6);
  min-height: 168px;
}

#legend { display: flex; flex-direction: column; gap: 7px; }
#legend .legend-title {
  display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
  font-size: 11.5px; color: var(--muted); letter-spacing: 2px;
}
#legend .legend-title > span {
  flex: 0 0 auto;
  color: rgba(210, 224, 240, 0.9);
}
#legend .legend-title small {
  min-width: 0;
  color: rgba(139, 160, 187, 0.82);
  font-size: 10px;
  line-height: 1.35;
  letter-spacing: 0.15px;
  text-align: right;
}
#legend .chips { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
#legend .chip {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 5px 9px; font-size: 12px; font-family: inherit;
  color: var(--ink); background: rgba(63, 111, 150, 0.14);
  border: 1px solid var(--panel-border); border-radius: 999px; cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}
#legend .chip:hover { border-color: var(--chip); background: rgba(63, 111, 150, 0.28); }
#legend .chip.current {
  border-color: color-mix(in srgb, var(--chip) 52%, var(--panel-border));
  background: color-mix(in srgb, var(--chip) 9%, transparent);
}
#legend .chip.active {
  color: var(--chip);
  border-color: var(--chip);
  background: color-mix(in srgb, var(--chip) 16%, transparent);
  box-shadow: 0 0 16px color-mix(in srgb, var(--chip) 22%, transparent);
}
#legend .chip i {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--chip); box-shadow: 0 0 6px var(--chip);
}

#legend .mansion-direct {
  margin-top: 1px;
  padding-top: 8px;
  border-top: 1px solid rgba(133, 171, 205, 0.14);
}
.mansion-direct-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
  margin-bottom: 6px;
  color: var(--muted); font-size: 10px; letter-spacing: 1.6px;
}
.mansion-direct-head > span { color: rgba(210, 224, 240, 0.78); }
.mansion-direct-head small {
  min-width: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  color: rgba(160, 181, 204, 0.78);
  font-size: 10px; letter-spacing: 0.4px;
}
.mansion-rail {
  display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px;
}
.mansion-rail button {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1px;
  min-width: 0; padding: 5px 1px 4px;
  color: #c8d6e6;
  background: rgba(63, 111, 150, 0.1);
  border: 1px solid rgba(120, 160, 200, 0.2);
  border-radius: 5px;
  font-family: inherit;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease,
    background 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}
.mansion-rail button small {
  color: rgba(150, 174, 200, 0.78);
  font-size: 8px; line-height: 1; letter-spacing: 0.5px;
  font-variant-numeric: tabular-nums;
}
.mansion-rail button span { font: 14px/1.05 var(--serif); letter-spacing: 0; }
.mansion-rail button:hover {
  color: var(--rail-accent);
  border-color: color-mix(in srgb, var(--rail-accent) 58%, transparent);
  background: color-mix(in srgb, var(--rail-accent) 12%, transparent);
  transform: translateY(-1px);
}
.mansion-rail button.selected {
  color: var(--rail-accent);
  border-color: var(--rail-accent);
  background: color-mix(in srgb, var(--rail-accent) 15%, transparent);
  box-shadow:
    0 0 12px color-mix(in srgb, var(--rail-accent) 20%, transparent),
    inset 0 0 0 1px color-mix(in srgb, var(--rail-accent) 30%, transparent);
}
.mansion-rail button.selected small { color: color-mix(in srgb, var(--rail-accent) 78%, #fff 22%); }

.layer-toggle {
  position: relative;
  display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
  width: 100%; padding: 8px 44px 8px 11px; text-align: left;
  color: var(--ink); background: rgba(63, 111, 150, 0.12);
  border: 1px solid var(--panel-border); border-radius: 8px;
  font: 12.5px var(--sans); cursor: pointer;
}
.layer-toggle small { color: var(--muted); font-size: 11px; }
.layer-toggle::after {
  content: "";
  position: absolute;
  top: 50%; right: 12px;
  width: 24px; height: 13px;
  transform: translateY(-50%);
  border: 1px solid rgba(150, 181, 210, 0.34);
  border-radius: 999px;
  background: rgba(3, 8, 15, 0.45);
  transition: border-color .25s ease, background .25s ease;
}
.layer-toggle::before {
  content: "";
  position: absolute;
  top: 50%; right: 27px;
  z-index: 1;
  width: 7px; height: 7px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: rgba(178, 198, 218, 0.62);
  transition: transform .25s ease, background .25s ease, box-shadow .25s ease;
}
.layer-toggle:hover {
  border-color: var(--gold-soft);
  background: rgba(63, 111, 150, 0.24);
}
.layer-toggle:focus-visible {
  outline: 2px solid var(--gold-soft);
  outline-offset: 2px;
}
.layer-toggle[aria-pressed="true"] {
  color: var(--gold); border-color: var(--gold-soft);
  background: rgba(240, 195, 122, 0.12);
  box-shadow: 0 0 16px rgba(240, 195, 122, 0.08);
}
.layer-toggle[aria-pressed="true"]::after {
  border-color: rgba(240, 195, 122, 0.62);
  background: rgba(240, 195, 122, 0.16);
}
.layer-toggle[aria-pressed="true"]::before {
  transform: translateY(-50%) translateX(11px);
  background: var(--gold);
  box-shadow: 0 0 8px rgba(240, 195, 122, 0.65);
}
.layer-toggle[aria-pressed="true"] small { color: #d7b477; }

#detail .nav { display: flex; gap: 8px; margin-top: 12px; }
#detail .nav button {
  flex: 1; padding: 6px 8px; font-family: inherit; font-size: 12px;
  color: var(--ink); background: rgba(63, 111, 150, 0.16);
  border: 1px solid var(--panel-border); border-radius: 6px; cursor: pointer;
}
#detail .nav button:hover { border-color: var(--gold-soft); background: rgba(63, 111, 150, 0.3); }

#detail .spark-wrap { margin-top: 10px; }
#detail .spark-title {
  display: flex; justify-content: space-between;
  font-size: 11px; color: var(--muted); letter-spacing: 1px; margin-bottom: 2px;
}
#detail .spark { width: 100%; height: 52px; display: block; }

#detail .hint { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.7; }

.welcome-copy .eyebrow {
  margin: 0 0 6px;
  color: var(--gold);
  font-size: 10.5px;
  letter-spacing: 1.6px;
}
.welcome-copy h3 {
  margin: 0 0 7px;
  font: 600 18px var(--serif);
  letter-spacing: 1.5px;
}
.welcome-facts {
  display: flex;
  gap: 12px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 11px;
}
.welcome-facts b {
  margin-right: 2px;
  color: var(--gold);
  font: 600 18px var(--serif);
}

#detail .name {
  font-family: var(--serif);
  font-size: 30px; letter-spacing: 3px; margin: 0 0 2px; color: var(--gold);
}
#detail .pron { margin: 0 0 10px; font-size: 12px; color: var(--muted); letter-spacing: 1px; }
#detail .detail-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 2px 0 10px;
}
#detail .detail-chips span {
  padding: 3px 8px;
  color: #cfd9e6;
  background: rgba(63, 111, 150, 0.14);
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  font-size: 11px;
}
#detail .anchor-line {
  margin: 0 0 10px;
  color: var(--gold);
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.6px;
}
#detail .anchor-line em {
  margin-right: 6px;
  color: var(--muted);
  font-size: 11px;
  font-style: normal;
  letter-spacing: 2px;
}
#detail .anchor-line b { font-weight: 600; }
#detail .anchor-line span { color: var(--muted); font-size: 11.5px; }
#detail .meaning {
  margin: 0;
  color: #cfd9e6;
  font-size: 12.5px;
  line-height: 1.75;
}
#detail .research-detail {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--panel-border);
}
#detail .research-detail summary {
  position: relative;
  padding-right: 18px;
  color: var(--muted);
  font-size: 11.5px;
  letter-spacing: 1px;
  cursor: pointer;
  list-style: none;
}
#detail .research-detail summary::-webkit-details-marker { display: none; }
#detail .research-detail summary::after {
  content: "＋";
  position: absolute;
  right: 0;
  color: var(--muted);
}
#detail .research-detail[open] summary::after { content: "－"; }
#detail .research-detail summary:hover { color: var(--ink); }
#detail .research-body { padding-top: 10px; }
#detail .research-detail:not([open]) .research-body { display: none; }

#detail dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 5px 10px; font-size: 13px; }
#detail dt { color: var(--muted); }
#detail dd { margin: 0; }

#detail .stars { margin-top: 12px; border-top: 1px dashed var(--panel-border); padding-top: 10px; }
#detail .stars h3 { margin: 0 0 8px; font-size: 12px; color: var(--muted); font-weight: 500; letter-spacing: 1px; }
#detail .star-row {
  display: grid; grid-template-columns: 1fr auto auto; gap: 8px;
  font-size: 12px; padding: 4px 6px; border-radius: 5px; cursor: pointer;
}
#detail .star-row:hover { background: rgba(240, 195, 122, 0.12); }
#detail .star-row.anchor { color: var(--gold); }
#detail .star-row .dim { color: var(--muted); }
#detail .star-row.hidden-star { opacity: 0.5; }
#detail .star-row.hidden-star span:last-child { text-decoration: line-through; }

.controls { display: flex; flex-direction: column; gap: 12px; }
.section-label {
  margin: 0 0 -3px;
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 2.4px;
}
.advanced-tools {
  border-top: 1px solid var(--panel-border);
  padding-top: 10px;
}
.advanced-tools summary {
  position: relative;
  padding: 4px 18px 4px 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 1.2px;
  cursor: pointer;
  list-style: none;
}
.advanced-tools summary::-webkit-details-marker { display: none; }
.advanced-tools summary::after {
  content: "＋";
  position: absolute;
  right: 0;
  top: 2px;
  color: var(--muted);
}
.advanced-tools[open] summary::after { content: "－"; }
.advanced-tools summary:hover { color: var(--ink); }
.advanced-tools:not([open]) .advanced-body { display: none; }
.advanced-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 12px;
}
.performance-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 8px 10px;
  color: var(--muted);
  font-size: 12px;
}
.performance-row label { min-width: 74px; }
.performance-row select {
  min-width: 0;
  padding: 5px 7px;
  color: var(--ink);
  background: rgba(8, 17, 29, 0.82);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  font: 11.5px var(--sans);
}
.performance-row span {
  grid-column: 2;
  color: var(--muted);
  font-size: 10.5px;
  letter-spacing: 0.4px;
}
.timeline {
  padding: 10px 10px 8px;
  border: 1px solid var(--panel-border);
  border-radius: 9px;
  background: rgba(10, 17, 30, 0.5);
  display: flex; flex-direction: column; gap: 8px;
}
.timeline .row { gap: 8px; }
.timeline output { min-width: 96px; color: var(--gold); }
.presets { flex-wrap: wrap; gap: 6px; }
.presets button {
  padding: 4px 9px; font-family: var(--serif); font-size: 12.5px;
  color: var(--ink); background: rgba(63, 111, 150, 0.16);
  border: 1px solid var(--panel-border); border-radius: 6px; cursor: pointer;
}
.presets button:hover { border-color: var(--gold-soft); background: rgba(63, 111, 150, 0.32); }
.presets button.play { margin-left: auto; color: var(--gold); border-color: var(--gold-soft); }
.presets button.play.on { background: rgba(240, 195, 122, 0.22); }
.controls .row { display: flex; align-items: center; gap: 10px; font-size: 12.5px; color: var(--muted); }
.controls .row label { min-width: 74px; }
.controls input[type=range] { flex: 1; accent-color: var(--gold); }
.controls output { min-width: 54px; text-align: right; color: var(--ink); font-variant-numeric: tabular-nums; }

.toggles { flex-wrap: wrap; gap: 10px 14px; }
.toggles label { display: flex; align-items: center; gap: 5px; cursor: pointer; color: var(--ink); }
.toggles input { accent-color: var(--gold); }

.buttons button {
  flex: 1;
  padding: 8px 10px;
  background: rgba(63, 111, 150, 0.18);
  color: var(--ink);
  border: 1px solid var(--panel-border);
  border-radius: 7px;
  font-family: inherit; font-size: 12.5px; cursor: pointer;
}
.buttons button:hover { background: rgba(63, 111, 150, 0.34); border-color: var(--gold-soft); }
.buttons button.story-btn { color: var(--gold); border-color: var(--gold-soft); }

.verify-entry {
  width: 100%;
  padding: 9px 12px;
  color: var(--gold);
  background: rgba(240, 195, 122, 0.08);
  border: 1px solid var(--gold-soft);
  border-radius: 8px;
  font: 600 13px var(--sans);
  letter-spacing: 1px;
  cursor: pointer;
}
.verify-entry:hover { background: rgba(240, 195, 122, 0.18); }

.present-entry {
  width: 100%;
  padding: 9px 12px;
  color: #9fd8ff;
  background: rgba(88, 165, 225, 0.08);
  border: 1px solid rgba(120, 190, 240, 0.36);
  border-radius: 8px;
  font: 600 13px var(--sans);
  letter-spacing: 1px;
  cursor: pointer;
}
.present-entry:hover { background: rgba(88, 165, 225, 0.18); }

/* ---------- 故事模式 ---------- */
#story {
  position: fixed; left: 28px; bottom: 52px; width: min(620px, calc(100vw - 420px));
  z-index: 30; pointer-events: none;
  transition: opacity 0.35s ease, transform 0.35s ease;
}
#story.hidden { opacity: 0; transform: translateY(14px); pointer-events: none; }
#story.hidden .story-card { pointer-events: none; }
#story .story-card {
  position: relative;
  overflow: hidden;
  pointer-events: auto;
  padding: 18px 20px 14px;
  border: 1px solid rgba(240, 195, 122, 0.32);
  border-radius: 14px;
  background:
    linear-gradient(155deg, rgba(20, 32, 49, 0.94), rgba(7, 12, 21, 0.94) 62%),
    radial-gradient(circle at 88% 8%, rgba(240, 195, 122, 0.08), transparent 38%);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
}
#story .story-frame {
  content: "";
  position: absolute;
  inset: 8px;
  z-index: 0;
  border-radius: 9px;
  pointer-events: none;
  opacity: 0.55;
  background:
    linear-gradient(90deg, rgba(240, 195, 122, 0.52), transparent) left top / 15px 1px no-repeat,
    linear-gradient(180deg, rgba(240, 195, 122, 0.52), transparent) left top / 1px 15px no-repeat,
    linear-gradient(270deg, rgba(240, 195, 122, 0.52), transparent) right top / 15px 1px no-repeat,
    linear-gradient(180deg, rgba(240, 195, 122, 0.52), transparent) right top / 1px 15px no-repeat,
    linear-gradient(90deg, rgba(240, 195, 122, 0.34), transparent) left bottom / 15px 1px no-repeat,
    linear-gradient(0deg, rgba(240, 195, 122, 0.34), transparent) left bottom / 1px 15px no-repeat,
    linear-gradient(270deg, rgba(240, 195, 122, 0.34), transparent) right bottom / 15px 1px no-repeat,
    linear-gradient(0deg, rgba(240, 195, 122, 0.34), transparent) right bottom / 1px 15px no-repeat;
}
#story .story-card > * {
  position: relative;
  z-index: 1;
}
#story .story-card > .story-frame,
  #story .story-card > .story-mark-wrap,
#story .story-card > .story-mark {
  z-index: 0;
}
  #story .story-mark-wrap {
    position: absolute;
    inset: 0;
    overflow: hidden;
    border-radius: inherit;
    pointer-events: none;
  }
#story .story-mark {
  position: absolute;
  right: 7px;
  bottom: -20px;
  z-index: 0;
  color: rgba(240, 195, 122, 0.055);
  font: 500 clamp(96px, 8vw, 138px)/1 var(--serif);
  letter-spacing: -0.04em;
  text-shadow: 0 0 34px rgba(240, 195, 122, 0.07);
  pointer-events: none;
  user-select: none;
}
#story .story-mark.mark-in {
  animation: storyMarkIn 0.9s cubic-bezier(0.2, 0.72, 0.2, 1) both;
}
@keyframes storyMarkIn {
  from { opacity: 0; transform: translateY(8px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
#story .story-head { display: flex; justify-content: space-between; font-size: 11.5px; letter-spacing: 2px; color: var(--muted); }
#story .story-kicker { color: var(--gold); }
#story .story-title {
  font-family: var(--serif); font-size: 34px; letter-spacing: 4px;
  margin: 6px 0 6px; color: var(--ink);
}
#story .story-seals {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
  margin: 0 0 9px;
}
#story .story-seals[hidden] { display: none; }
#story .story-seals button {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1px;
  min-width: 0; padding: 4px 1px 4px;
  color: rgba(205, 219, 235, 0.9);
  background:
    linear-gradient(155deg, rgba(240, 195, 122, 0.075), rgba(240, 195, 122, 0.018)),
    rgba(10, 20, 34, 0.62);
  border: 1px solid rgba(240, 195, 122, 0.22);
  border-radius: 4px;
  font-family: inherit;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease,
    background 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}
#story .story-seals button small {
  color: rgba(170, 188, 209, 0.7);
  font-size: 8px; line-height: 1; letter-spacing: 0.45px;
  font-variant-numeric: tabular-nums;
}
#story .story-seals button span {
  font: 13.5px/1.05 var(--serif);
  letter-spacing: 0;
}
#story .story-seals button:hover {
  color: #ffe3b2;
  border-color: rgba(240, 195, 122, 0.72);
  background: rgba(240, 195, 122, 0.13);
  transform: translateY(-1px);
}
#story .story-seals button.selected {
  color: #ffe4b4;
  border-color: rgba(240, 195, 122, 0.92);
  background:
    linear-gradient(155deg, rgba(240, 195, 122, 0.25), rgba(240, 195, 122, 0.08)),
    rgba(20, 27, 38, 0.72);
  box-shadow:
    0 0 14px rgba(240, 195, 122, 0.17),
    inset 0 0 0 1px rgba(255, 230, 180, 0.18);
}
#story .story-seals button.selected small { color: rgba(255, 226, 178, 0.9); }
#story .story-text { margin: 0 0 8px; font-size: 14px; line-height: 1.75; color: #cfd9e6; }
#story .story-data { font-size: 11.5px; color: var(--muted); letter-spacing: 0.4px; }
#story .story-bar {
  margin: 12px 0 10px; height: 2px; background: rgba(120, 160, 200, 0.18);
  border-radius: 2px; overflow: hidden;
}
#story .story-bar i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #a9783d, #f0c37a 62%, #fff0c9);
  box-shadow: 0 0 10px rgba(240, 195, 122, 0.46);
  transition: width 0.12s linear;
}
#story .story-speed {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 9px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.6px;
}
#story .story-speed label { flex: 0 0 auto; }
#story .story-speed input { flex: 1 1 auto; min-width: 80px; }
#story .story-speed output {
  flex: 0 0 42px;
  color: var(--gold);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
#story .story-controls { display: flex; gap: 8px; }
#story .story-controls button {
  padding: 5px 10px; font-family: inherit; font-size: 12px;
  color: var(--ink); background: rgba(63, 111, 150, 0.16);
  border: 1px solid var(--panel-border); border-radius: 6px; cursor: pointer;
  white-space: nowrap;
}
#story .story-controls button:hover { border-color: var(--gold-soft); background: rgba(63, 111, 150, 0.3); }
#story .story-controls #storyExit { margin-left: auto; color: var(--muted); }

#story .story-card.step-in .story-kicker,
#story .story-card.step-in .story-pos,
#story .story-card.step-in .story-title,
#story .story-card.step-in .story-text,
#story .story-card.step-in .story-data {
  animation: storyLineIn 0.46s cubic-bezier(0.2, 0.72, 0.2, 1) both;
}
#story .story-card.step-in .story-pos { animation-delay: 0.03s; }
#story .story-card.step-in .story-title { animation-delay: 0.05s; }
#story .story-card.step-in .story-seals {
  animation: storyLineIn 0.46s cubic-bezier(0.2, 0.72, 0.2, 1) both;
  animation-delay: 0.07s;
}
#story .story-card.step-in .story-text { animation-delay: 0.09s; }
#story .story-card.step-in .story-data { animation-delay: 0.13s; }

@keyframes storyLineIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

body.story-mode #hud { opacity: 0; }
body.story-mode #panel { opacity: 0.45; }
body.story-mode #panel:hover { opacity: 1; }

@media (min-width: 901px) {
  /* 故事模式把叙述卡放入右侧侧栏，星图保留完整的主舞台，不再被卡片遮挡。 */
  body.story-mode:not(.presentation-mode) #panel {
    opacity: 1;
    pointer-events: none;
  }
  body.story-mode:not(.presentation-mode) #panel > * { opacity: 0; }
  body.story-mode:not(.presentation-mode) #story {
    left: auto;
    right: 24px;
    bottom: 28px;
    width: 288px;
  }
  body.story-mode:not(.presentation-mode) #story .story-card {
    padding: 16px 17px 14px;
  }
  body.story-mode:not(.presentation-mode) #story .story-head {
    font-size: 10px;
    letter-spacing: 1.2px;
  }
  body.story-mode:not(.presentation-mode) #story .story-title {
    margin: 7px 0 7px;
    font-size: 29px;
    letter-spacing: 2px;
  }
  body.story-mode:not(.presentation-mode) #story .story-text {
    margin-bottom: 7px;
    font-size: 13px;
    line-height: 1.68;
  }
  body.story-mode:not(.presentation-mode) #story .story-data {
    font-size: 10.5px;
    line-height: 1.55;
  }
  body.story-mode:not(.presentation-mode) #story .story-speed {
    gap: 7px;
    font-size: 10px;
  }
  body.story-mode:not(.presentation-mode) #story .story-controls {
    flex-wrap: wrap;
    gap: 6px;
  }
  body.story-mode:not(.presentation-mode) #story .story-controls #storyExit {
    margin-left: 0;
  }
}

/* 宽屏且处于 16:9 附近时，侧栏退出布局，星盘按整幅视口居中；
   较窄或接近 4:3 的屏幕仍保留侧栏安全区，避免星盘压到叙述卡。 */
@media (min-width: 1240px) and (min-aspect-ratio: 17/10) {
  body.story-mode:not(.presentation-mode) #panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 336px;
    height: 100vh;
    opacity: 0;
    visibility: hidden;
  }
  body.story-mode:not(.presentation-mode) #stage {
    flex: 1 1 100%;
    width: 100vw;
  }
}

/* ---------- 拓本核验 ---------- */
#verify {
  position: fixed;
  inset: 0;
  z-index: 190;
  display: grid;
  place-items: center;
  padding: 14px;
  background: rgba(3, 7, 13, 0.92);
  backdrop-filter: blur(12px);
}
#verify[hidden] { display: none; }
#verify .verify-shell {
  width: min(1280px, 100%);
  height: min(860px, calc(100dvh - 28px));
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(240, 195, 122, 0.28);
  border-radius: 18px;
  background: #09111e;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.62);
}
#verify .verify-head {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px 16px;
  border-bottom: 1px solid var(--panel-border);
  background: rgba(13, 21, 36, 0.9);
}
#verify .verify-head h2 {
  margin: 2px 0 0;
  font: 600 26px var(--serif);
  letter-spacing: 4px;
}
#verify .verify-kicker {
  color: var(--gold);
  font-size: 11.5px;
  letter-spacing: 2px;
}
#verify .verify-close,
#verify .verify-secondary,
#verify .verify-upload {
  padding: 7px 12px;
  color: var(--ink);
  background: rgba(63, 111, 150, 0.16);
  border: 1px solid var(--panel-border);
  border-radius: 7px;
  font: 12.5px var(--sans);
  cursor: pointer;
}
#verify .verify-close:hover,
#verify .verify-secondary:hover,
#verify .verify-upload:hover {
  border-color: var(--gold-soft);
  background: rgba(63, 111, 150, 0.3);
}
#verify .verify-body {
  flex: 1 1 auto;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 344px;
}
#verify .verify-stage {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  touch-action: none;
  background:
    radial-gradient(circle at center, rgba(35, 59, 89, 0.42) 0 35%, rgba(8, 13, 22, 0) 72%),
    linear-gradient(rgba(117, 153, 190, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(117, 153, 190, 0.045) 1px, transparent 1px),
    #060c15;
  background-size: auto, 40px 40px, 40px 40px, auto;
}
#verify .verify-stage.dragging { cursor: grabbing; }
#verifyImage {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  width: 92%;
  height: 92%;
  max-width: none;
  object-fit: contain;
  transform-origin: center;
  user-select: none;
  cursor: grab;
  filter: saturate(0.82) contrast(1.04);
}
#verifyImage[hidden] { display: none; }
#verify .verify-rings {
  position: absolute;
  inset: 0;
  z-index: 3;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
}
#verify .ring {
  fill: none;
  stroke-width: 0.007;
  vector-effect: non-scaling-stroke;
}
#verify .ring-border { stroke: rgba(196, 204, 217, 0.92); stroke-dasharray: 0.035 0.025; }
#verify .ring-outer { stroke: #f0c37a; stroke-width: 0.009; }
#verify .ring-equator { stroke: #58c6bd; }
#verify .ring-inner { stroke: #73a8ff; }
#verify .verify-cross { stroke: rgba(240, 195, 122, 0.78); stroke-width: 0.006; }
#verify .ring-label {
  font: 0.055px "Microsoft YaHei", sans-serif;
  fill: #dce7f7;
  paint-order: stroke;
  stroke: rgba(5, 10, 18, 0.94);
  stroke-width: 0.018;
}
#verify .label-border { fill: #c5ccd8; }
#verify .label-outer { fill: #f0c37a; }
#verify .label-equator { fill: #58c6bd; }
#verify .label-inner { fill: #8db8ff; }
#verify .verify-empty {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 7px;
  padding: 30px;
  text-align: center;
  color: var(--muted);
}
#verify .verify-empty[hidden] { display: none; }
#verify .verify-empty-mark {
  color: rgba(240, 195, 122, 0.72);
  font: 64px/1 var(--serif);
}
#verify .verify-empty strong {
  color: var(--ink);
  font: 600 18px var(--serif);
  letter-spacing: 1px;
}
#verify .verify-empty p { max-width: 420px; margin: 0; font-size: 12.5px; line-height: 1.7; }
#verify .verify-side {
  min-height: 0;
  padding: 16px;
  overflow-y: auto;
  border-left: 1px solid var(--panel-border);
  background: rgba(11, 19, 32, 0.94);
}
#verify .verify-card {
  padding: 14px;
  margin-bottom: 12px;
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  background: rgba(8, 14, 24, 0.66);
}
#verify .verify-card:last-child { margin-bottom: 0; }
#verify .verify-card h3 {
  margin: 0 0 10px;
  color: var(--gold);
  font: 600 12px var(--sans);
  letter-spacing: 1.6px;
}
#verify .verify-upload {
  display: block;
  text-align: center;
  color: var(--gold);
  border-color: var(--gold-soft);
}
#verify .verify-upload input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
#verify .verify-secondary { width: 100%; margin-top: 7px; }
#verify .verify-auto:not([disabled]) {
  color: var(--gold);
  border-color: var(--gold-soft);
  background: rgba(240, 195, 122, 0.1);
}
#verify .verify-auto:not([disabled]):hover { background: rgba(240, 195, 122, 0.2); }
#verify .verify-auto[disabled] { opacity: 0.45; cursor: not-allowed; }
#verify .verify-status {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.55;
}
#verify .verify-status[data-state="ok"] { color: #8fd8bf; }
#verify .verify-status[data-state="warn"] { color: #e6bd78; }
#verify .verify-status[data-state="error"] { color: #e49b91; }
#verify .verify-note {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.6;
}

#verify .verify-diagnostic[hidden] { display: none; }
#verify .verify-diag-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px;
}
#verify .verify-diag-head h3 { margin-bottom: 4px; }
#verify .verify-diag-head strong {
  color: var(--gold);
  font: 700 20px var(--serif);
  font-variant-numeric: tabular-nums;
}
#verify .verify-diag-head strong.warn { color: #e6bd78; }
#verify .verify-diag-row {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-top: 8px; color: var(--muted); font-size: 11.5px;
}
#verify .verify-diag-row b { color: var(--ink); font-variant-numeric: tabular-nums; }
#verify .verify-diag-bar {
  height: 4px; margin-top: 4px; overflow: hidden;
  background: rgba(120, 160, 200, 0.16); border-radius: 999px;
}
#verify .verify-diag-bar i {
  display: block; width: 0; height: 100%; border-radius: inherit;
  background: linear-gradient(90deg, #58c6bd, #f0c37a);
  transition: width 0.25s ease;
}
#verify .verify-diag-bar i.low { background: #d88a6d; }
#verify .verify-diag-meta {
  margin: 8px 0 0; color: var(--muted); font-size: 11px;
}
#verify .verify-advice {
  margin: 8px 0 0; padding: 8px 10px;
  color: var(--ink); font-size: 11.5px; line-height: 1.55;
  background: rgba(240, 195, 122, 0.07);
  border-left: 2px solid var(--gold-soft);
}
#verify .verify-row {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) 44px;
  align-items: center;
  gap: 8px;
  margin-top: 9px;
  font-size: 12px;
  color: var(--muted);
}
#verify .verify-row input { width: 100%; accent-color: var(--gold); }
#verify .verify-row output { text-align: right; color: var(--ink); font-variant-numeric: tabular-nums; }
#verify .verify-toggles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 10px;
}
#verify .verify-toggles label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--ink);
  cursor: pointer;
}
#verify .verify-toggles input { accent-color: var(--gold); }
#verify .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}
#verify .border-dot { color: #c5ccd8; }
#verify .outer-dot { color: #f0c37a; }
#verify .equator-dot { color: #58c6bd; }
#verify .inner-dot { color: #73a8ff; }
#verify .verify-result dl {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 7px 12px;
  margin: 0;
  font-size: 12.5px;
}
#verify .verify-result dt { color: var(--muted); }
#verify .verify-result dd { margin: 0; color: var(--ink); font-variant-numeric: tabular-nums; }

#sources { margin-top: auto; border-top: 1px solid var(--panel-border); padding-top: 12px; }
#sources .source-details summary {
  color: var(--muted);
  font-size: 11.5px;
  letter-spacing: 1px;
  cursor: pointer;
}
#sources .source-details summary:hover { color: var(--ink); }
#sources .source-details:not([open]) .meta { display: none; }
#sources .meta { margin: 0 0 4px; font-size: 11px; color: var(--muted); line-height: 1.6; }
#sources .license-link { margin-top: 8px; }
#sources a { color: var(--gold); text-underline-offset: 2px; }
#sources a:hover { color: #ffdda8; }

@media (max-width: 900px) {
  body { flex-direction: column; }

  #stage {
    flex: 0 0 52vh;
    height: 52vh;
    min-height: 260px;
  }

  #panel {
    flex: 1 1 auto;
    height: auto;
    min-height: 0;
    border-left: none;
    border-top: 1px solid var(--panel-border);
  }
  /* 手机上把故事卡贴近视口底部，尽量把上方星图完整让出来 */
  #story {
    left: 16px;
    right: 16px;
    bottom: 16px;
    width: auto;
    max-height: calc(48vh - 16px);
  }
  #story .story-card {
    max-height: 100%;
    overflow-y: auto;
  }
  #hud {
    left: 16px;
    right: 16px;
    bottom: 10px;
    gap: 8px 12px;
    font-size: 11.5px;
  }

  #verify {
    padding: 8px;
  }
  #verify .verify-shell {
    height: calc(100dvh - 16px);
  }
  #verify .verify-head {
    padding: 14px 16px 12px;
  }
  #verify .verify-head h2 { font-size: 22px; }
  #verify .verify-body {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(270px, 48vh) minmax(160px, 1fr);
  }
  #verify .verify-side {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-content: start;
    gap: 10px;
    padding: 12px;
    border-left: 0;
    border-top: 1px solid var(--panel-border);
  }
  #verify .verify-card { margin-bottom: 0; }
}

/* 矮屏（如 800×600 投影窗口）里故事卡会盖住侧栏标题与控件，整组隐去避免半截文字透出。 */
@media (max-width: 900px) and (max-height: 720px) {
  body.story-mode:not(.presentation-mode) #panel {
    pointer-events: none;
  }
  body.story-mode:not(.presentation-mode) #panel > * {
    opacity: 0;
  }
}

@media (max-width: 560px) {
  #panel {
    padding: 18px 16px 16px;
  }
  #panel header h1 {
    font-size: 22px;
    letter-spacing: 1px;
  }
  #story .story-card {
    padding: 14px 16px 12px;
  }
  #story .story-title {
    font-size: 28px;
    letter-spacing: 2px;
  }
  #story .story-text {
    font-size: 13px;
    line-height: 1.6;
  }
  #story .story-controls {
    flex-wrap: wrap;
    gap: 6px;
  }
  #story .story-controls #storyExit {
    margin-left: 0;
  }
  #verify .verify-side {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  #verify .verify-empty p { display: none; }
  #verify .verify-empty-mark { font-size: 44px; }
}

/* ---------- 答辩演示 ---------- */
#presentationBar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 45;
  min-height: 68px;
  padding: 12px clamp(18px, 3vw, 44px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--ink);
  background: linear-gradient(180deg, rgba(4, 9, 16, 0.94), rgba(4, 9, 16, 0.64) 72%, transparent);
}
#presentationBar[hidden] { display: none; }
.present-brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-width: 0;
}
.present-brand span {
  color: var(--gold);
  font: 600 31px var(--serif);
  letter-spacing: 5px;
  white-space: nowrap;
}
.present-brand small {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 1.5px;
  white-space: nowrap;
}
.present-help {
  color: rgba(164, 186, 211, 0.72);
  font-size: 12px;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.present-actions { display: flex; align-items: center; gap: 7px; }
.present-speed {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(164, 186, 211, 0.72);
  font-size: 11.5px;
  letter-spacing: 0.4px;
}
.present-speed input { width: 104px; }
.present-speed output {
  min-width: 38px;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.present-actions button {
  min-width: 38px;
  padding: 8px 12px;
  color: var(--ink);
  background: rgba(16, 35, 55, 0.78);
  border: 1px solid rgba(130, 170, 205, 0.28);
  border-radius: 8px;
  font: 12.5px var(--sans);
  cursor: pointer;
  white-space: nowrap;
}
.present-actions button:hover {
  color: var(--gold);
  border-color: var(--gold-soft);
  background: rgba(40, 71, 100, 0.8);
}
#presentExit { color: var(--gold); border-color: var(--gold-soft); }

@media (max-width: 1200px) {
  /* 投影常用的 1024×768 下收敛答辩栏，避免按钮与快捷键提示折行。 */
  #presentationBar {
    gap: 14px;
    padding-left: 20px;
    padding-right: 20px;
  }
  .present-help { display: none; }
  .present-brand { gap: 10px; }
  .present-actions { gap: 5px; }
  .present-actions button { padding: 7px 10px; font-size: 12px; }
  .present-speed input { width: 88px; }
}

body.presentation-mode #panel,
body.presentation-mode #hud { display: none; }
body.presentation-mode #stage {
  flex: 1 1 100%;
  width: 100vw;
  height: 100vh;
}
body.presentation-mode #story {
  left: auto;
  right: clamp(24px, 3vw, 56px);
  bottom: clamp(24px, 4vh, 54px);
  width: clamp(320px, 24vw, 460px);
  max-height: calc(100vh - 142px);
}
body.presentation-mode #story .story-card {
  max-height: 100%;
  overflow-y: auto;
  padding: 22px 24px 18px;
  border-color: rgba(240, 195, 122, 0.48);
  background: rgba(4, 10, 18, 0.94);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.68);
}
body.presentation-mode #story .story-kicker,
body.presentation-mode #story .story-pos {
  font-size: 13px;
  letter-spacing: 2.5px;
}
body.presentation-mode #story .story-title {
  font-size: 40px;
  letter-spacing: 4px;
  margin: 8px 0;
}
body.presentation-mode #story .story-text {
  font-size: 16px;
  line-height: 1.75;
}
body.presentation-mode #story .story-data {
  font-size: 12px;
  line-height: 1.65;
}
body.presentation-mode #story .story-controls button {
  padding: 8px 14px;
  font-size: 13px;
}
/* 演示条已有总速度控制，卡片内不再重复，留出更干净的阅读区。 */
body.presentation-mode #story .story-speed { display: none; }
body.presentation-mode #storyExit { display: none; }

/* 中等屏幕的答辩卡更窄，按钮保持整词换行，避免汉字被挤成竖排。 */
@media (min-width: 901px) and (max-width: 1500px) {
  body.presentation-mode #story .story-card { padding: 18px 18px 15px; }
  body.presentation-mode #story .story-title {
    font-size: 34px;
    letter-spacing: 3px;
  }
  body.presentation-mode #story .story-text {
    font-size: 15px;
    line-height: 1.7;
  }
  body.presentation-mode #story .story-controls {
    flex-wrap: wrap;
    gap: 6px;
  }
  body.presentation-mode #story .story-controls button {
    padding: 7px 10px;
    font-size: 12.5px;
  }
}

@media (max-width: 900px) {
  #presentationBar {
    padding: 10px 14px;
    gap: 10px;
  }
  .present-brand span { font-size: 24px; letter-spacing: 3px; }
  .present-brand small,
  .present-help { display: none; }
  .present-speed { gap: 5px; }
  .present-speed span { display: none; }
  .present-speed input { width: 78px; }
  .present-actions { gap: 5px; }
  .present-actions button { padding: 7px 9px; }
  body.presentation-mode #story {
    left: 16px;
    right: 16px;
    bottom: 18px;
    width: auto;
    max-height: calc(100vh - 108px);
  }
  body.presentation-mode #story .story-card { padding: 16px 18px 13px; }
  body.presentation-mode #story .story-title {
    font-size: 32px;
    letter-spacing: 3px;
  }
  body.presentation-mode #story .story-text {
    font-size: 14.5px;
    line-height: 1.65;
  }
  body.presentation-mode #story .story-data { font-size: 11.5px; }
  body.presentation-mode #story .story-controls { flex-wrap: wrap; }
}

/* 小尺寸横屏（如 800×600 投影窗口）：仍用左右分区，避免星图被底部卡片压成窄条。 */
@media (min-width: 680px) and (max-width: 900px) and (orientation: landscape) {
  body.presentation-mode #story {
    left: auto;
    right: 16px;
    bottom: 16px;
    width: min(340px, 44vw);
    max-height: calc(100vh - 96px);
  }
  body.presentation-mode #story .story-card { padding: 16px 18px 13px; }
  body.presentation-mode #story .story-title {
    font-size: 28px;
    letter-spacing: 2px;
    margin: 6px 0;
  }
  body.presentation-mode #story .story-text { font-size: 13.5px; line-height: 1.62; }
  body.presentation-mode #story .story-controls { flex-wrap: wrap; }
}

/* ---------- 开场与品牌 ---------- */
body.intro-open { overflow: hidden; }
#intro {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% 46%, rgba(24, 49, 79, 0.42), rgba(4, 9, 16, 0.97) 58%),
    radial-gradient(circle at 18% 24%, rgba(255, 255, 255, 0.55) 0 1px, transparent 1.6px),
    radial-gradient(circle at 76% 31%, rgba(174, 203, 235, 0.45) 0 1px, transparent 1.7px),
    radial-gradient(circle at 63% 78%, rgba(255, 220, 158, 0.36) 0 1px, transparent 1.5px),
    #040912;
  background-size: auto, 173px 173px, 211px 211px, 257px 257px, auto;
  backdrop-filter: blur(5px);
  transition: opacity 0.42s ease, transform 0.42s ease;
}
#intro[hidden] { display: none; }
#intro.leaving {
  opacity: 0;
  transform: scale(1.025);
  pointer-events: none;
}
.intro-shell {
  position: relative;
  z-index: 3;
  width: min(760px, calc(100vw - 40px));
  text-align: center;
  animation: introRise 0.8s cubic-bezier(0.2, 0.75, 0.2, 1) both;
}
.intro-eyebrow {
  margin: 0 0 20px;
  color: #d6ae67;
  font-size: 11px;
  letter-spacing: 5px;
}
.intro-title {
  display: flex;
  justify-content: center;
  gap: 0.2em;
  margin: 0;
  color: #f3e7cb;
  font: 500 clamp(88px, 12vw, 148px)/1 var(--serif);
  letter-spacing: 0.08em;
  text-shadow: 0 0 48px rgba(240, 195, 122, 0.16);
}
.intro-title span {
  display: inline-block;
  animation: introGlyph 1.1s cubic-bezier(0.16, 0.72, 0.22, 1) both;
}
.intro-title span:last-child { animation-delay: 0.14s; }
.intro-sub {
  margin: 19px 0 0;
  color: #c5d2e2;
  font-family: var(--serif);
  font-size: clamp(16px, 2vw, 21px);
  letter-spacing: 3px;
}
.intro-rule {
  width: 72px;
  height: 1px;
  margin: 25px auto 21px;
  background: linear-gradient(90deg, transparent, #c79a49, transparent);
}
.intro-copy {
  margin: 0;
  color: #879ab1;
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: 1px;
}
.intro-actions {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 12px;
  margin-top: 30px;
}
.intro-actions button {
  min-width: 150px;
  padding: 12px 22px;
  border-radius: 999px;
  font: 600 14px var(--sans);
  letter-spacing: 1.2px;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}
.intro-actions button:hover { transform: translateY(-2px); }
.intro-primary {
  color: #182235;
  background: linear-gradient(135deg, #f1ca83, #dca54b);
  border: 1px solid rgba(255, 228, 173, 0.75);
  box-shadow: 0 12px 40px rgba(195, 143, 54, 0.24);
}
.intro-primary small {
  margin-left: 5px;
  font-size: 10px;
  font-weight: 500;
  opacity: 0.72;
}
.intro-mission {
  padding: 12px 16px;
  color: #f1d59e;
  background:
    linear-gradient(135deg, rgba(123, 90, 45, 0.42), rgba(30, 49, 70, 0.58));
  border: 1px solid rgba(240, 195, 122, 0.48);
  box-shadow: inset 0 0 0 1px rgba(255, 232, 184, 0.05);
}
.intro-mission:hover {
  color: #fff0cc;
  border-color: rgba(240, 195, 122, 0.78);
  background:
    linear-gradient(135deg, rgba(145, 106, 52, 0.52), rgba(37, 61, 85, 0.64));
}
.intro-mission small {
  margin-left: 5px;
  font-size: 9.5px;
  font-weight: 500;
  opacity: 0.68;
}
.intro-secondary {
  color: #cfd9e5;
  background: rgba(28, 48, 71, 0.44);
  border: 1px solid rgba(145, 178, 209, 0.28);
}
.intro-secondary:hover {
  color: #f0c37a;
  border-color: rgba(240, 195, 122, 0.52);
  background: rgba(42, 68, 94, 0.52);
}
.intro-hint {
  margin: 21px 0 0;
  color: #63758b;
  font-size: 11px;
  letter-spacing: 1.6px;
}
.intro-foot {
  position: absolute;
  left: 50%;
  bottom: 22px;
  z-index: 3;
  margin: 0;
  color: rgba(135, 154, 177, 0.56);
  font-size: 10.5px;
  letter-spacing: 1.6px;
  transform: translateX(-50%);
}
.intro-mark {
  position: absolute;
  right: 5.5vw;
  top: 50%;
  z-index: 2;
  color: rgba(218, 193, 149, 0.44);
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: 5px;
  writing-mode: vertical-rl;
  transform: translateY(-50%);
}
.intro-orbit {
  position: absolute;
  left: 50%;
  top: 50%;
  border-radius: 50%;
  pointer-events: none;
}
.intro-orbit-a {
  width: min(76vw, 840px);
  aspect-ratio: 1;
  border: 1px solid rgba(126, 167, 206, 0.16);
  border-top-color: rgba(240, 195, 122, 0.34);
  transform: translate(-50%, -50%) rotate(-18deg);
  animation: introOrbit 34s linear infinite;
}
.intro-orbit-b {
  width: min(54vw, 600px);
  aspect-ratio: 1;
  border: 1px dashed rgba(126, 167, 206, 0.13);
  transform: translate(-50%, -50%) rotate(23deg);
  animation: introOrbitReverse 28s linear infinite;
}
@keyframes introRise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes introGlyph {
  from { opacity: 0; transform: translateY(24px); filter: blur(8px); }
  to { opacity: 1; transform: translateY(0); filter: blur(0); }
}
@keyframes introOrbit {
  from { transform: translate(-50%, -50%) rotate(-18deg); }
  to { transform: translate(-50%, -50%) rotate(342deg); }
}
@keyframes introOrbitReverse {
  from { transform: translate(-50%, -50%) rotate(23deg); }
  to { transform: translate(-50%, -50%) rotate(-337deg); }
}

@media (max-width: 620px) {
  .present-speed { display: none; }
  .intro-shell { width: calc(100vw - 30px); }
  .intro-eyebrow { letter-spacing: 3px; }
  .intro-title { font-size: clamp(76px, 27vw, 108px); }
  .intro-sub { padding: 0 12px; font-size: 15px; line-height: 1.7; letter-spacing: 2px; }
  .intro-copy { font-size: 12.5px; }
  .intro-actions { flex-direction: column; align-items: center; gap: 9px; }
  .intro-actions button { width: min(260px, 82vw); }
  .intro-mark { display: none; }
  .intro-orbit-a { width: 112vw; }
  .intro-orbit-b { width: 80vw; }
}

@media (prefers-reduced-motion: reduce) {
  .intro-shell,
  .intro-title span,
  .intro-orbit { animation: none; }
  #intro { transition-duration: 0.01ms; }
}

/* ---------- 视觉精修 ---------- */
:root {
  --panel: rgba(10, 19, 32, 0.94);
  --panel-border: rgba(133, 171, 205, 0.2);
  --gold: #efc677;
  --gold-soft: rgba(239, 198, 119, 0.5);
}

body {
  background:
    radial-gradient(ellipse at 40% 45%, #10233b 0%, #091423 44%, #040911 100%);
}

#stage {
  isolation: isolate;
  background:
    radial-gradient(ellipse at 50% 43%, rgba(30, 58, 90, 0.4), transparent 59%),
    linear-gradient(145deg, #0b1728 0%, #060c16 62%, #040810 100%);
}
#stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(circle at 17% 24%, rgba(194, 218, 245, 0.28) 0 1px, transparent 1.7px),
    radial-gradient(circle at 72% 18%, rgba(240, 197, 120, 0.22) 0 1px, transparent 1.6px),
    radial-gradient(circle at 58% 76%, rgba(180, 211, 240, 0.2) 0 1px, transparent 1.5px),
    radial-gradient(circle at 85% 62%, rgba(194, 218, 245, 0.18) 0 1px, transparent 1.6px);
  background-size: 131px 173px, 197px 149px, 173px 211px, 239px 191px;
  opacity: 0.62;
  mix-blend-mode: screen;
  transition: opacity 1.1s ease;
}
body.story-void #stage::before { opacity: 0.035; }
#stage::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  box-shadow:
    inset 0 0 120px 18px rgba(1, 5, 10, 0.67),
    inset -22px 0 50px rgba(1, 5, 10, 0.38);
}
#sky {
  position: relative;
  z-index: 0;
  background: transparent;
}

.stage-brand {
  position: absolute;
  left: 24px;
  top: 20px;
  z-index: 4;
  display: flex;
  align-items: baseline;
  gap: 10px;
  pointer-events: none;
  opacity: 0.82;
}
.stage-brand span {
  color: #efcf92;
  font: 600 22px var(--serif);
  letter-spacing: 5px;
  text-shadow: 0 0 22px rgba(239, 198, 119, 0.18);
}
.stage-brand small {
  color: rgba(171, 191, 214, 0.62);
  font-size: 9.5px;
  letter-spacing: 1.8px;
}
#hud { z-index: 5; }
#perfBadge { z-index: 6; }

#panel {
  background:
    linear-gradient(180deg, rgba(14, 26, 43, 0.97), rgba(7, 14, 25, 0.97)),
    radial-gradient(circle at 80% 8%, rgba(63, 111, 150, 0.18), transparent 32%);
  border-left: 1px solid rgba(239, 198, 119, 0.18);
  box-shadow: -24px 0 70px rgba(0, 0, 0, 0.34);
  scrollbar-width: thin;
  scrollbar-color: rgba(119, 153, 185, 0.35) transparent;
}
#panel::-webkit-scrollbar { width: 5px; }
#panel::-webkit-scrollbar-thumb {
  background: rgba(119, 153, 185, 0.35);
  border-radius: 99px;
}
#panel header {
  position: relative;
  padding-bottom: 13px;
}
#panel header::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 58px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}
#panel header h1 {
  color: #f4dfb2;
  font-size: 36px;
  background: linear-gradient(180deg, #fbf0d8 0%, #d8ae62 74%, #b58639 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 28px rgba(239, 198, 119, 0.13);
}

.primary-action {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #f6d99f 0%, #e8bc6d 48%, #c99138 100%);
  border-color: rgba(255, 235, 192, 0.72);
  box-shadow:
    0 12px 30px rgba(185, 129, 42, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
}
.primary-action::after {
  content: "";
  position: absolute;
  inset: -40% auto -40% -35%;
  width: 35%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.34), transparent);
  transform: skewX(-18deg);
  transition: left 0.5s ease;
}
.primary-action:hover::after { left: 105%; }
.experience-secondary button {
  color: #dce7f3;
  background: linear-gradient(180deg, rgba(32, 57, 82, 0.34), rgba(13, 27, 43, 0.3));
}

#detail,
.timeline,
#verify .verify-card {
  background:
    linear-gradient(180deg, rgba(17, 31, 49, 0.78), rgba(8, 17, 29, 0.76));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.025);
}
#detail { border-color: rgba(133, 171, 205, 0.18); }

#detail .name {
  text-shadow: 0 0 20px rgba(239, 198, 119, 0.17);
}
#detail .detail-chips span {
  background: linear-gradient(180deg, rgba(60, 105, 144, 0.22), rgba(43, 80, 113, 0.12));
}

input[type="range"] {
  height: 4px;
  appearance: none;
  -webkit-appearance: none;
  border-radius: 99px;
  background: rgba(121, 153, 182, 0.23);
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  width: 14px;
  height: 14px;
  -webkit-appearance: none;
  border-radius: 50%;
  border: 2px solid #f4deb1;
  background: linear-gradient(145deg, #e8bf70, #b9832e);
  box-shadow: 0 0 0 3px rgba(239, 198, 119, 0.11), 0 2px 7px rgba(0, 0, 0, 0.4);
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid #f4deb1;
  background: #c9943e;
  cursor: pointer;
}
button:focus-visible,
select:focus-visible,
input:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

#story .story-card {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(11, 20, 34, 0.96), rgba(5, 11, 20, 0.94));
  border-color: rgba(239, 198, 119, 0.42);
  box-shadow:
    0 24px 70px rgba(0, 0, 0, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
#story .story-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(239, 198, 119, 0.12) 68%, transparent);
}
#story .story-card::after {
  content: "「";
  position: absolute;
  right: 18px;
  top: 38px;
  color: rgba(239, 198, 119, 0.07);
  font: 82px/1 var(--serif);
  pointer-events: none;
}
#story .story-title {
  color: #f4e7cc;
  text-shadow: 0 0 24px rgba(239, 198, 119, 0.11);
}
#story .story-data {
  padding-top: 7px;
  border-top: 1px solid rgba(133, 171, 205, 0.13);
}
#story .story-bar {
  height: 3px;
}
#story .story-bar i {
  background: linear-gradient(90deg, #c79036, #f3d493);
  box-shadow: 0 0 10px rgba(239, 198, 119, 0.38);
}

#presentationBar {
  border-bottom: 1px solid rgba(239, 198, 119, 0.1);
  backdrop-filter: blur(10px);
}
body.presentation-mode .stage-brand { display: none; }

@media (prefers-reduced-motion: reduce) {
  .stage-atmosphere i,
  #story .story-card.step-in .story-kicker,
  #story .story-card.step-in .story-pos,
  #story .story-card.step-in .story-title,
  #story .story-card.step-in .story-seals,
  #story .story-card.step-in .story-text,
  #story .story-card.step-in .story-data,
  #story .story-mark.mark-in {
    animation: none;
  }
}

@media (max-width: 900px) {
  .stage-brand {
    left: 16px;
    top: 14px;
  }
  .stage-brand span { font-size: 18px; }
  .stage-brand small { display: none; }
  body.presentation-mode .stage-brand { display: none; }
}

/* ---------- 首屏星图转译 / 千年对照 / 岁差呼吸 ---------- */
#intro {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding-left: clamp(34px, 7vw, 136px);
  background:
    radial-gradient(circle at 68% 48%, rgba(30, 58, 86, 0.25), transparent 43%),
    linear-gradient(105deg, #050a12 0%, #07101d 52%, #040912 100%);
  backdrop-filter: none;
}
#introSky {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.intro-veil {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(4, 9, 16, 0.97) 0%, rgba(4, 9, 16, 0.88) 28%, rgba(4, 9, 16, 0.30) 55%, transparent 72%),
    radial-gradient(ellipse at 39% 50%, rgba(8, 17, 29, 0.48), transparent 56%);
}
.intro-shell {
  width: min(540px, 42vw);
  text-align: left;
  animation: introRiseLeft 0.86s cubic-bezier(0.2, 0.75, 0.2, 1) both;
}
.intro-eyebrow {
  margin-bottom: 17px;
  letter-spacing: 6px;
}
.intro-title {
  justify-content: flex-start;
  gap: 0.12em;
  font-size: clamp(86px, 9.5vw, 144px);
  letter-spacing: 0.04em;
}
.intro-sub {
  max-width: 470px;
  margin-top: 17px;
  font-size: clamp(15px, 1.55vw, 20px);
  line-height: 1.65;
  letter-spacing: 2.2px;
}
.intro-rule {
  margin: 22px 0 18px;
  background: linear-gradient(90deg, #c79a49, rgba(199, 154, 73, 0.06));
}
.intro-copy {
  max-width: 430px;
  color: #8297ae;
  line-height: 1.86;
}
.intro-actions {
  justify-content: flex-start;
  margin-top: 25px;
}
.intro-tertiary {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 18px;
  padding: 2px 0 4px;
  color: rgba(227, 214, 188, 0.76);
  background: transparent;
  border: 0;
  border-bottom: 1px solid rgba(209, 178, 116, 0.26);
  font: 500 12px var(--serif);
  letter-spacing: 2.4px;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.intro-tertiary small {
  color: rgba(137, 160, 182, 0.72);
  font: 9.5px var(--sans);
  letter-spacing: 0.7px;
}
.intro-tertiary:hover {
  color: #f0c37a;
  border-color: rgba(240, 195, 122, 0.62);
}
.intro-transit {
  position: absolute;
  right: clamp(28px, 6vw, 118px);
  bottom: 7.2vh;
  z-index: 3;
  display: grid;
  grid-template-columns: auto 54px auto;
  align-items: center;
  gap: 10px;
  color: rgba(220, 204, 173, 0.72);
  font: 11px var(--serif);
  letter-spacing: 2px;
  transition: color 0.4s ease;
}
.intro-transit i {
  display: block;
  width: 54px;
  height: 1px;
  background: linear-gradient(90deg, rgba(213, 180, 116, 0.15), rgba(213, 180, 116, 0.78), rgba(213, 180, 116, 0.15));
}
.intro-transit small {
  grid-column: 1 / -1;
  color: rgba(127, 148, 169, 0.56);
  font: 9.5px var(--sans);
  letter-spacing: 1.4px;
  text-align: right;
}
#intro.transit-stone .intro-transit span:last-of-type { color: rgba(138, 158, 179, 0.44); }
#intro.transit-modern .intro-transit span:first-of-type { color: rgba(138, 158, 179, 0.44); }
#intro.transit-modern .intro-transit span:last-of-type { color: #efc677; }
.intro-foot { z-index: 4; }

@keyframes introRiseLeft {
  from { opacity: 0; transform: translateX(-16px); }
  to { opacity: 1; transform: translateX(0); }
}

.compare-entry {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 10px 11px;
  color: #e8e1d0;
  background:
    linear-gradient(90deg, rgba(103, 75, 35, 0.22), rgba(26, 45, 65, 0.24)),
    rgba(8, 18, 29, 0.5);
  border: 1px solid rgba(218, 175, 96, 0.32);
  border-radius: 8px;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
.compare-entry:hover {
  border-color: rgba(239, 198, 119, 0.58);
  background:
    linear-gradient(90deg, rgba(126, 89, 38, 0.28), rgba(30, 54, 76, 0.3)),
    rgba(8, 18, 29, 0.56);
  transform: translateY(-1px);
}
.compare-entry-era {
  color: #efc677;
  font: 600 12px var(--serif);
  letter-spacing: 1.6px;
}
.compare-entry-years {
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(181, 198, 215, 0.76);
  font-size: 9.5px;
  white-space: nowrap;
}
.compare-entry-years i {
  width: 18px;
  height: 1px;
  background: linear-gradient(90deg, rgba(239, 198, 119, 0.14), rgba(239, 198, 119, 0.72), rgba(239, 198, 119, 0.14));
}
.compare-entry b {
  color: rgba(231, 217, 190, 0.78);
  font-size: 9.5px;
  font-weight: 500;
  white-space: nowrap;
}

#ambientNote {
  position: absolute;
  right: 14px;
  bottom: 41px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 5px 9px 5px 7px;
  color: rgba(201, 216, 230, 0.66);
  background: rgba(6, 14, 24, 0.54);
  border: 1px solid rgba(133, 171, 205, 0.12);
  border-radius: 999px;
  font: 10px var(--serif);
  letter-spacing: 1px;
  pointer-events: none;
  backdrop-filter: blur(7px);
}
#ambientNote[hidden] { display: none; }
#ambientNote i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #e5bd72;
  box-shadow: 0 0 10px rgba(229, 189, 114, 0.7);
  animation: ambientPulse 3.8s ease-in-out infinite;
}
#ambientNote small {
  color: rgba(130, 154, 177, 0.62);
  font: 9px var(--sans);
  letter-spacing: 0.5px;
}
@keyframes ambientPulse {
  0%, 100% { opacity: 0.36; transform: scale(0.82); }
  50% { opacity: 1; transform: scale(1); }
}

/* ---------- 观星令 ---------- */
#mission {
  position: fixed;
  inset: 0;
  z-index: 150;
  overflow-x: hidden;
  overflow-y: auto;
  color: var(--ink);
  background:
    radial-gradient(ellipse at 22% 34%, rgba(47, 82, 116, 0.22), transparent 48%),
    radial-gradient(ellipse at 78% 62%, rgba(121, 85, 42, 0.12), transparent 45%),
    linear-gradient(145deg, #050a12 0%, #081525 54%, #04080f 100%);
}
#mission[hidden] { display: none; }
#mission::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 11% 19%, rgba(255, 255, 255, 0.34) 0 1px, transparent 1.5px),
    radial-gradient(circle at 68% 77%, rgba(191, 215, 240, 0.26) 0 1px, transparent 1.5px),
    radial-gradient(circle at 88% 31%, rgba(235, 202, 139, 0.2) 0 1px, transparent 1.6px);
  background-size: 173px 191px, 227px 163px, 263px 211px;
  opacity: 0.48;
}
.mission-shell {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  min-height: 0;
}
.mission-head {
  flex: 0 0 auto;
  display: grid;
  grid-template-columns: minmax(190px, 0.72fr) minmax(360px, 1.5fr) minmax(110px, 0.5fr);
  align-items: center;
  gap: 18px;
  padding: 12px clamp(18px, 3vw, 42px) 10px;
  border-bottom: 1px solid rgba(142, 176, 205, 0.13);
  background: linear-gradient(180deg, rgba(7, 14, 24, 0.72), rgba(7, 14, 24, 0.22));
}
.mission-brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}
.mission-brand span {
  color: #f1ddb5;
  font: 500 22px var(--serif);
  letter-spacing: 4px;
}
.mission-brand small {
  overflow: hidden;
  color: rgba(151, 174, 196, 0.66);
  font-size: 9.5px;
  letter-spacing: 1.5px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mission-rail {
  position: relative;
  display: flex;
  justify-content: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}
.mission-rail::before {
  content: "";
  position: absolute;
  left: 16%;
  right: 16%;
  top: 14px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(143, 174, 202, 0.24), transparent);
}
.mission-rail li {
  position: relative;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 clamp(9px, 1.5vw, 20px);
  color: rgba(146, 168, 189, 0.55);
  font-size: 10.5px;
  letter-spacing: 1.2px;
}
.mission-rail b {
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  color: rgba(167, 189, 210, 0.7);
  background: #091422;
  border: 1px solid rgba(134, 169, 199, 0.3);
  border-radius: 50%;
  font: 500 12px var(--serif);
  transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}
.mission-rail li.active { color: #efd19a; }
.mission-rail li.active b {
  color: #1b2535;
  background: linear-gradient(135deg, #f1cf8d, #c99845);
  border-color: rgba(255, 229, 174, 0.76);
  box-shadow: 0 0 18px rgba(240, 195, 122, 0.22);
}
.mission-rail li.done b {
  color: #e8c77e;
  border-color: rgba(232, 199, 126, 0.56);
  background: rgba(96, 70, 33, 0.38);
}
.mission-close,
.mission-quiet {
  padding: 8px 13px;
  color: rgba(210, 224, 236, 0.82);
  background: rgba(24, 44, 65, 0.4);
  border: 1px solid rgba(133, 171, 205, 0.24);
  border-radius: 7px;
  font: 11.5px var(--sans);
  cursor: pointer;
}
.mission-close {
  justify-self: end;
  white-space: nowrap;
}
.mission-close:hover,
.mission-quiet:hover {
  color: #f5dca5;
  border-color: rgba(240, 195, 122, 0.54);
  background: rgba(48, 71, 94, 0.5);
}
.mission-body {
  flex: 1 1 auto;
  min-height: 0;
  padding: 12px clamp(18px, 3vw, 42px) 16px;
  overflow: hidden;
}
.mission-step {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(1380px, 100%);
  height: 100%;
  min-height: 0;
  margin: 0 auto;
}
.mission-step[hidden] { display: none; }
.mission-kicker {
  margin: 0 0 3px;
  color: rgba(226, 187, 111, 0.8);
  font-size: 10px;
  letter-spacing: 3px;
}
.mission-step-head {
  flex: 0 0 auto;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 26px;
  padding: 2px 3px 8px;
  border-bottom: 1px solid rgba(144, 175, 203, 0.13);
}
.mission-step-head h2,
.mission-report-side h2 {
  margin: 0;
  color: #f2e6cb;
  font: 500 clamp(24px, 2.3vw, 34px) var(--serif);
  letter-spacing: 3px;
}
.mission-step-head > p {
  max-width: 570px;
  margin: 0 0 2px;
  color: rgba(143, 164, 184, 0.72);
  font-size: 11.5px;
  line-height: 1.7;
  text-align: right;
}
.mission-step-copy {
  max-width: 650px;
  text-align: right;
}
.mission-step-copy > p {
  margin: 0 0 2px;
  color: rgba(143, 164, 184, 0.72);
  font-size: 11.5px;
  line-height: 1.7;
}
.mission-step-copy .mission-aside-note {
  margin-top: 4px;
  color: rgba(216, 183, 119, 0.62);
  font-size: 10px;
  letter-spacing: 0.5px;
}
.mission-primary {
  padding: 11px 21px;
  color: #1b2637;
  background: linear-gradient(135deg, #f0cf8e, #cf9e4c);
  border: 1px solid rgba(255, 231, 183, 0.68);
  border-radius: 8px;
  box-shadow: 0 12px 34px rgba(177, 126, 42, 0.18);
  font: 600 13px var(--sans);
  letter-spacing: 1px;
  cursor: pointer;
  transition: transform 0.18s ease, filter 0.18s ease, opacity 0.18s ease;
}
.mission-primary small {
  margin-left: 5px;
  font-size: 9.5px;
  font-weight: 500;
  opacity: 0.68;
}
.mission-primary:hover:not([disabled]) {
  filter: brightness(1.06);
  transform: translateY(-1px);
}
.mission-primary[disabled] {
  cursor: not-allowed;
  opacity: 0.35;
  filter: saturate(0.55);
}
.mission-primary.is-stamping {
  transform: scale(0.985);
  filter: brightness(0.94);
}

/* 接令 */
.mission-order {
  display: grid;
  flex: 1 1 auto;
  grid-template-columns: minmax(0, 1.38fr) minmax(280px, 0.62fr);
  gap: clamp(18px, 3vw, 34px);
  align-items: stretch;
  min-height: 0;
}
.mission-scroll {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: clamp(28px, 4.4vh, 54px) clamp(32px, 6vw, 86px);
  overflow: hidden;
  background:
    radial-gradient(ellipse at 89% 14%, rgba(215, 174, 100, 0.12), transparent 34%),
    linear-gradient(135deg, rgba(31, 28, 21, 0.72), rgba(11, 23, 36, 0.76));
  border: 1px solid rgba(210, 170, 97, 0.28);
  box-shadow: inset 0 0 0 5px rgba(8, 15, 24, 0.66), inset 0 0 0 6px rgba(197, 154, 81, 0.1);
}
.mission-scroll::before,
.mission-scroll::after {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(223, 183, 109, 0.42), transparent);
}
.mission-scroll::before { top: 17px; }
.mission-scroll::after { bottom: 17px; }
.mission-order-mark {
  position: absolute;
  right: clamp(24px, 5vw, 70px);
  top: 50%;
  color: rgba(206, 164, 91, 0.08);
  font: 500 clamp(150px, 20vw, 280px)/1 var(--serif);
  transform: translateY(-51%);
  user-select: none;
}
.mission-scroll h2 {
  position: relative;
  margin: 0 0 22px;
  color: #f4e7cd;
  font: 500 clamp(42px, 5.1vw, 72px)/1.06 var(--serif);
  letter-spacing: 0.14em;
  text-shadow: 0 0 40px rgba(240, 195, 122, 0.1);
}
.mission-salute {
  position: relative;
  margin: 0 0 9px;
  color: #d9c59d;
  font: 500 14px var(--serif);
  letter-spacing: 2px;
}
.mission-lead {
  position: relative;
  max-width: 710px;
  margin: 0;
  color: rgba(193, 207, 219, 0.8);
  font: 15px/2 var(--serif);
  letter-spacing: 0.8px;
}
.mission-decrees {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 25px 0 27px;
}
.mission-decrees span {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 11px;
  color: rgba(208, 219, 228, 0.74);
  background: rgba(45, 67, 88, 0.26);
  border: 1px solid rgba(132, 165, 193, 0.18);
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.7px;
}
.mission-decrees b {
  color: #d7aa58;
  font: 500 11px var(--serif);
}
.mission-scroll .mission-primary {
  position: relative;
  align-self: flex-start;
}
.mission-stamp-status {
  position: relative;
  margin: 9px 0 0;
  color: rgba(148, 170, 191, 0.54);
  font-size: 9.5px;
  letter-spacing: 1.2px;
}
.mission-brief {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(24px, 4vw, 46px);
  background:
    radial-gradient(circle at 86% 13%, rgba(214, 166, 83, 0.09), transparent 32%),
    rgba(8, 18, 30, 0.54);
  border: 1px solid rgba(120, 160, 200, 0.16);
}
.mission-seal {
  display: grid;
  place-items: center;
  width: 108px;
  height: 108px;
  margin-bottom: 24px;
  color: rgba(232, 166, 137, 0.92);
  border: 2px solid rgba(207, 93, 72, 0.64);
  border-radius: 7px;
  box-shadow: inset 0 0 0 4px rgba(207, 93, 72, 0.13);
  font: 500 18px/1.25 var(--serif);
  letter-spacing: 4px;
  text-align: center;
  transform: rotate(-4deg);
}
.mission-seal.is-stamping {
  animation: missionSealStamp 0.62s cubic-bezier(0.2, 0.82, 0.28, 1) both;
}
@keyframes missionSealStamp {
  0% {
    opacity: 0.18;
    filter: blur(1.5px);
    transform: rotate(-4deg) scale(1.55);
  }
  42% {
    opacity: 1;
    filter: blur(0);
    transform: rotate(-4deg) scale(0.93);
  }
  66% {
    transform: rotate(-4deg) scale(1.04);
  }
  100% {
    opacity: 1;
    filter: blur(0);
    transform: rotate(-4deg) scale(1);
  }
}
@media (prefers-reduced-motion: reduce) {
  .mission-seal.is-stamping {
    animation: none;
    opacity: 1;
    filter: none;
    box-shadow:
      inset 0 0 0 4px rgba(207, 93, 72, 0.13),
      0 0 0 6px rgba(203, 90, 69, 0.08);
  }
  .mission-primary,
  .mission-curve {
    transition: none;
  }
}
.mission-brief > p {
  margin: 0 0 28px;
  color: #e2cca2;
  font: 18px/1.8 var(--serif);
  letter-spacing: 1.5px;
}
.mission-brief dl {
  display: grid;
  gap: 12px;
  margin: 0;
}
.mission-brief dl div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(133, 171, 205, 0.12);
}
.mission-brief dt {
  color: rgba(141, 164, 185, 0.64);
  font-size: 10.5px;
  letter-spacing: 1px;
}
.mission-brief dd {
  margin: 0;
  color: rgba(214, 225, 234, 0.86);
  font-size: 11px;
  text-align: right;
}
.mission-brief > small {
  margin-top: 24px;
  color: rgba(129, 152, 173, 0.5);
  font-size: 9.5px;
  line-height: 1.7;
}
.mission-brief-notes {
  display: grid;
  gap: 7px;
  margin-top: 20px;
  padding-top: 13px;
  border-top: 1px solid rgba(133, 171, 205, 0.12);
}
.mission-brief-notes p {
  margin: 0;
  color: rgba(129, 152, 173, 0.54);
  font-size: 9.5px;
  line-height: 1.65;
}

/* 比对 */
.mission-compare {
  display: grid;
  flex: 1 1 auto;
  grid-template-columns: minmax(0, 1fr) 106px minmax(0, 1fr);
  gap: 9px;
  min-height: 0;
}
.mission-sky-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  padding: 10px 12px 8px;
  background:
    radial-gradient(circle at 50% 50%, rgba(39, 70, 99, 0.23), transparent 67%),
    linear-gradient(180deg, rgba(12, 26, 41, 0.76), rgba(5, 13, 23, 0.74));
  border: 1px solid rgba(126, 159, 190, 0.17);
  border-radius: 12px;
}
.mission-sky-old { border-color: rgba(207, 169, 99, 0.25); }
.mission-sky-new { border-color: rgba(115, 174, 214, 0.24); }
.mission-sky-card > header {
  flex: 0 0 auto;
  display: flex;
  align-items: baseline;
  gap: 9px;
  min-height: 29px;
  padding: 0 2px 6px;
}
.mission-sky-card > header span {
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  color: #eacb8b;
  border: 1px solid rgba(215, 178, 106, 0.44);
  border-radius: 50%;
  font: 500 12px var(--serif);
}
.mission-sky-new > header span { color: #a7cbe5; border-color: rgba(120, 174, 214, 0.46); }
.mission-sky-card > header b {
  color: #e9eef4;
  font: 500 14px var(--serif);
  letter-spacing: 1.2px;
}
.mission-sky-card > header small {
  margin-left: auto;
  color: rgba(135, 158, 180, 0.58);
  font-size: 9px;
}
.mission-canvas-wrap {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
}
.mission-canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.mission-spots {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.mission-spot {
  position: absolute;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  padding: 0;
  color: #f3d28f;
  background: rgba(18, 28, 38, 0.72);
  border: 1px solid rgba(240, 195, 122, 0.72);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(240, 195, 122, 0.08), 0 0 24px rgba(240, 195, 122, 0.2);
  font: 600 11px var(--sans);
  cursor: pointer;
  pointer-events: auto;
  transform: translate(-50%, -50%);
  animation: missionSpotPulse 2.4s ease-in-out infinite;
}
.mission-spot:hover { background: rgba(95, 69, 29, 0.78); }
.mission-spot.found {
  color: #172130;
  background: linear-gradient(135deg, #f2d18f, #cd9c48);
  border-color: rgba(255, 231, 181, 0.94);
  box-shadow: 0 0 0 4px rgba(240, 195, 122, 0.13), 0 0 30px rgba(240, 195, 122, 0.36);
  animation: none;
}
@keyframes missionSpotPulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(240, 195, 122, 0.07), 0 0 18px rgba(240, 195, 122, 0.12); }
  50% { box-shadow: 0 0 0 10px rgba(240, 195, 122, 0.02), 0 0 28px rgba(240, 195, 122, 0.3); }
}
.mission-bridge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(166, 184, 201, 0.54);
  text-align: center;
}
.mission-bridge span {
  font: 10px var(--serif);
  letter-spacing: 2px;
}
.mission-bridge i {
  width: 1px;
  height: clamp(28px, 8vh, 76px);
  margin: 8px 0;
  background: linear-gradient(180deg, transparent, rgba(214, 178, 105, 0.5), transparent);
}
.mission-bridge b {
  color: #eacb89;
  font: 500 clamp(24px, 2.4vw, 36px) var(--serif);
  font-variant-numeric: tabular-nums;
}
.mission-bridge small {
  margin-top: 2px;
  font-size: 9px;
  letter-spacing: 2px;
}
.mission-findings {
  display: grid;
  flex: 0 0 auto;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.mission-findings li {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 8px 11px;
  background: rgba(11, 23, 37, 0.58);
  border: 1px solid rgba(126, 159, 190, 0.15);
  border-radius: 8px;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.mission-findings li.found {
  background: rgba(67, 51, 26, 0.32);
  border-color: rgba(226, 183, 103, 0.35);
}
.mission-findings li > span {
  color: rgba(216, 169, 84, 0.66);
  font: 500 11px var(--serif);
}
.mission-findings li div {
  min-width: 0;
}
.mission-findings b {
  display: block;
  color: rgba(232, 237, 242, 0.92);
  font: 500 13px var(--serif);
  letter-spacing: 1px;
}
.mission-findings small {
  display: block;
  overflow: hidden;
  margin-top: 2px;
  color: rgba(137, 159, 180, 0.55);
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mission-findings em {
  margin-left: auto;
  color: rgba(151, 174, 195, 0.5);
  font: 10px var(--sans);
  font-style: normal;
  white-space: nowrap;
}
.mission-findings li.found em { color: #e2bb70; }
.mission-foot-row {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 40px;
}
.mission-count {
  color: rgba(153, 174, 193, 0.6);
  font-size: 10.5px;
  letter-spacing: 1.2px;
}

/* 测量 */
.mission-measure {
  display: grid;
  flex: 1 1 auto;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 13px;
  min-height: 0;
}
.mission-curves {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  min-height: 0;
}
.mission-curve {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  padding: 14px 14px 11px;
  color: var(--ink);
  text-align: left;
  background:
    radial-gradient(circle at 50% 38%, rgba(38, 68, 96, 0.2), transparent 62%),
    linear-gradient(180deg, rgba(13, 27, 43, 0.68), rgba(5, 13, 23, 0.62));
  border: 1px solid rgba(126, 159, 190, 0.17);
  border-radius: 11px;
  cursor: pointer;
  transition: border-color 0.22s ease, background 0.22s ease, transform 0.22s ease;
}
.mission-curve:hover {
  border-color: rgba(240, 195, 122, 0.38);
  transform: translateY(-2px);
}
.mission-curve.correct {
  background:
    radial-gradient(circle at 50% 38%, rgba(109, 80, 36, 0.25), transparent 64%),
    linear-gradient(180deg, rgba(35, 30, 21, 0.72), rgba(9, 18, 28, 0.66));
  border-color: rgba(235, 194, 113, 0.66);
  box-shadow: inset 0 0 0 1px rgba(255, 232, 183, 0.06), 0 0 26px rgba(240, 195, 122, 0.08);
}
.mission-curve.wrong {
  border-color: rgba(194, 106, 81, 0.48);
  animation: missionShake 0.36s ease;
}
@keyframes missionShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}
.mission-curve-head {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 6px;
}
.mission-curve-letter {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  color: #e7c47d;
  border: 1px solid rgba(213, 174, 100, 0.42);
  border-radius: 50%;
  font: 500 11px var(--serif);
}
.mission-curve-head b {
  color: #f0e9dc;
  font: 500 22px var(--serif);
  letter-spacing: 3px;
}
.mission-curve-head small {
  margin-left: auto;
  color: rgba(134, 157, 178, 0.48);
  font-size: 8.5px;
  letter-spacing: 0.6px;
}
.mission-curve svg {
  display: block;
  flex: 1 1 auto;
  width: 100%;
  min-height: 120px;
  margin: 4px 0 7px;
  overflow: visible;
}
.mission-curve-foot {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding-top: 8px;
  border-top: 1px solid rgba(133, 171, 205, 0.11);
}
.mission-curve-foot span {
  color: rgba(139, 160, 180, 0.62);
  font-size: 9px;
  letter-spacing: 0.7px;
}
.mission-curve-foot strong {
  color: rgba(229, 194, 126, 0.55);
  font: 500 15px var(--serif);
  font-variant-numeric: tabular-nums;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.mission-curve.reveal .mission-curve-foot strong { opacity: 1; }
.mission-question {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 22px;
  overflow: hidden;
  background:
    radial-gradient(circle at 84% 12%, rgba(113, 82, 39, 0.2), transparent 35%),
    rgba(8, 18, 30, 0.55);
  border: 1px solid rgba(213, 173, 99, 0.22);
  border-radius: 11px;
}
.mission-question-mark {
  position: absolute;
  right: 12px;
  top: 4px;
  color: rgba(211, 168, 91, 0.07);
  font: 500 150px/1 var(--serif);
  pointer-events: none;
}
.mission-question h3 {
  position: relative;
  margin: 0 0 12px;
  color: #efdfbd;
  font: 500 20px var(--serif);
  letter-spacing: 1.5px;
}
.mission-question > p:not(.mission-kicker) {
  position: relative;
  margin: 0;
  color: rgba(157, 177, 195, 0.68);
  font-size: 11.5px;
  line-height: 1.85;
}
.mission-answer-state {
  position: relative;
  margin: 20px 0 14px;
  padding: 11px 12px;
  color: rgba(199, 211, 222, 0.74);
  background: rgba(24, 43, 62, 0.36);
  border-left: 2px solid rgba(139, 170, 197, 0.3);
  font-size: 11.5px;
  line-height: 1.65;
}
.mission-answer-state.ok {
  color: #f1cf8f;
  border-left-color: rgba(235, 194, 113, 0.78);
  background: rgba(71, 53, 26, 0.28);
}
.mission-answer-state.retry {
  color: #e5b09d;
  border-left-color: rgba(202, 112, 86, 0.62);
}
.mission-question > small {
  position: relative;
  color: rgba(126, 149, 170, 0.46);
  font-size: 9.5px;
  line-height: 1.6;
}

/* 回奏 */
.mission-report {
  display: grid;
  flex: 1 1 auto;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: clamp(18px, 3vw, 34px);
  align-items: stretch;
  min-height: 0;
}
.mission-report-preview {
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 0;
  padding: 6px 10px;
}
#missionReportPreview {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 100%;
  aspect-ratio: 4 / 5;
  box-shadow: 0 26px 90px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(221, 181, 107, 0.22);
}
.mission-report-side {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 0;
  padding: 10px 4px;
}
.mission-report-side h2 {
  margin-bottom: 11px;
}
.mission-report-lead {
  margin: 0 0 18px;
  color: rgba(160, 180, 198, 0.7);
  font: 13px/1.9 var(--serif);
  letter-spacing: 0.6px;
}
.mission-report-facts {
  display: grid;
  gap: 7px;
  margin: 0 0 19px;
}
.mission-report-facts div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 7px;
  border-bottom: 1px solid rgba(133, 171, 205, 0.12);
}
.mission-report-facts dt {
  color: rgba(140, 162, 183, 0.6);
  font-size: 10px;
  letter-spacing: 1px;
}
.mission-report-facts dd {
  margin: 0;
  color: #e5d0a2;
  font: 13px var(--serif);
  text-align: right;
}
.mission-generate {
  width: 100%;
  padding: 13px 16px;
  font-size: 13.5px;
}
.mission-download-note {
  margin: 9px 0 0;
  color: rgba(128, 151, 171, 0.48);
  font-size: 9.5px;
  line-height: 1.6;
  text-align: center;
}
.mission-success {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
  padding: 10px 12px;
  background: rgba(69, 51, 25, 0.3);
  border: 1px solid rgba(226, 183, 103, 0.34);
  border-radius: 8px;
}
.mission-success[hidden] { display: none; }
.mission-success-seal {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 43px;
  height: 43px;
  color: #e6ab91;
  border: 1px solid rgba(207, 93, 72, 0.58);
  border-radius: 4px;
  font: 500 10px var(--serif);
  letter-spacing: 1px;
  transform: rotate(-5deg);
}
.mission-success b {
  color: #efd6a2;
  font: 500 12px var(--serif);
  letter-spacing: 1px;
}
.mission-success p {
  margin: 3px 0 0;
  color: rgba(161, 176, 190, 0.62);
  font-size: 9.5px;
  line-height: 1.55;
}
.mission-report-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.mission-report-actions button {
  flex: 1 1 0;
  padding-left: 8px;
  padding-right: 8px;
}

@media (max-height: 720px) and (min-width: 981px) {
  .mission-head { padding-top: 8px; padding-bottom: 7px; }
  .mission-body { padding-top: 8px; padding-bottom: 10px; }
  .mission-step { gap: 7px; }
  .mission-step-head { padding-bottom: 5px; }
  .mission-step-head h2 { font-size: 24px; }
  .mission-scroll { padding-top: 22px; padding-bottom: 22px; }
  .mission-scroll h2 { font-size: 46px; margin-bottom: 14px; }
  .mission-lead { font-size: 13px; line-height: 1.8; }
  .mission-decrees { margin: 15px 0 16px; }
  .mission-seal { width: 82px; height: 82px; margin-bottom: 15px; font-size: 14px; }
  .mission-brief > p { margin-bottom: 16px; font-size: 15px; }
  .mission-brief > small { margin-top: 14px; }
  .mission-question { padding: 16px; }
  .mission-question h3 { font-size: 17px; }
  .mission-answer-state { margin: 13px 0 10px; }
}

@media (max-width: 980px) {
  #mission { overflow-y: auto; }
  .mission-shell { height: auto; min-height: 100dvh; }
  .mission-head {
    position: sticky;
    top: 0;
    z-index: 6;
    grid-template-columns: 1fr auto;
    padding: 9px 14px;
    background: rgba(7, 14, 24, 0.94);
    backdrop-filter: blur(10px);
  }
  .mission-brand small,
  .mission-rail span { display: none; }
  .mission-rail {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: center;
    gap: 2px;
  }
  .mission-rail::before { left: 25%; right: 25%; }
  .mission-rail li { padding: 0 9px; }
  .mission-close { grid-column: 2; grid-row: 1; }
  .mission-body { overflow: visible; padding: 10px 12px 18px; }
  .mission-step { height: auto; min-height: 0; }
  .mission-step-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }
  .mission-step-head > p,
  .mission-step-copy { text-align: left; }
  .mission-order { grid-template-columns: 1fr; }
  .mission-brief { min-height: 0; }
  .mission-compare {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .mission-sky-card { min-height: 292px; }
  .mission-bridge {
    flex-direction: row;
    gap: 9px;
    padding: 1px 0;
  }
  .mission-bridge i {
    width: 74px;
    height: 1px;
    margin: 0;
    background: linear-gradient(90deg, transparent, rgba(214, 178, 105, 0.5), transparent);
  }
  .mission-bridge b { font-size: 19px; }
  .mission-bridge small { margin: 0; }
  .mission-findings { grid-template-columns: 1fr; }
  .mission-measure { grid-template-columns: 1fr; }
  .mission-curves { grid-template-columns: 1fr; }
  .mission-curve { min-height: 218px; }
  .mission-curve svg { min-height: 100px; max-height: 150px; }
  .mission-report { grid-template-columns: 1fr; }
  .mission-report-preview { max-height: 58dvh; }
  #missionReportPreview { max-height: 56dvh; }
  .mission-report-side { padding: 0 2px; }
}

@media (max-width: 620px) {
  .mission-brand span { font-size: 18px; }
  .mission-rail b { width: 26px; height: 26px; font-size: 10px; }
  .mission-rail::before { top: 12px; }
  .mission-step-head h2,
  .mission-report-side h2 { font-size: 23px; letter-spacing: 2px; }
  .mission-scroll { padding: 26px 20px 24px; }
  .mission-scroll h2 { font-size: 38px; letter-spacing: 0.1em; }
  .mission-lead { font-size: 13px; line-height: 1.85; }
  .mission-decrees { gap: 6px; }
  .mission-decrees span { padding: 6px 8px; font-size: 10px; }
  .mission-brief { padding: 20px; }
  .mission-seal { width: 76px; height: 76px; margin-bottom: 14px; }
  .mission-brief > p { font-size: 15px; }
  .mission-brief-notes { margin-top: 14px; }
  .mission-sky-card { min-height: 250px; padding: 8px; }
  .mission-sky-card > header small { display: none; }
  .mission-foot-row {
    flex-wrap: wrap;
    align-items: stretch;
  }
  .mission-foot-row .mission-primary { flex: 1 1 100%; }
  .mission-count { order: 3; }
  .mission-report-actions { flex-direction: column; }
  .mission-question { padding: 18px; }
}

#compare {
  position: fixed;
  inset: 0;
  z-index: 140;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(ellipse at 50% 45%, rgba(22, 45, 68, 0.52), transparent 62%),
    linear-gradient(145deg, #050b14 0%, #091422 52%, #040810 100%);
}
#compare[hidden] { display: none; }
#compare::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 13% 29%, rgba(255, 255, 255, 0.36) 0 1px, transparent 1.4px),
    radial-gradient(circle at 81% 63%, rgba(182, 210, 238, 0.28) 0 1px, transparent 1.5px);
  background-size: 191px 191px, 237px 237px;
  opacity: 0.5;
}
.compare-head,
.compare-body,
.compare-foot { position: relative; z-index: 1; }
.compare-head {
  display: grid;
  grid-template-columns: minmax(150px, 0.72fr) minmax(300px, 1.7fr) minmax(220px, 0.72fr);
  align-items: center;
  gap: 18px;
  padding: 15px 26px 13px;
  border-bottom: 1px solid rgba(144, 175, 203, 0.13);
}
.compare-brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.compare-brand span {
  color: #f0dbb1;
  font: 500 23px var(--serif);
  letter-spacing: 4px;
}
.compare-brand small {
  color: rgba(140, 163, 184, 0.62);
  font-size: 9.5px;
  letter-spacing: 1.4px;
}
.compare-title-wrap { text-align: center; }
.compare-kicker {
  margin: 0 0 2px;
  color: rgba(219, 185, 119, 0.72);
  font: 10px var(--sans);
  letter-spacing: 3px;
}
.compare-title-wrap h2 {
  margin: 0;
  color: #f3e8d2;
  font: 500 24px var(--serif);
  letter-spacing: 3px;
}
.compare-head-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}
.compare-head-actions button,
.compare-foot button {
  padding: 8px 12px;
  color: rgba(212, 225, 237, 0.84);
  background: rgba(24, 44, 65, 0.48);
  border: 1px solid rgba(133, 171, 205, 0.24);
  border-radius: 7px;
  font: 11px var(--sans);
  cursor: pointer;
}
.compare-head-actions #compareSave {
  color: #1b2637;
  background: linear-gradient(135deg, #efcf92, #d3a251);
  border-color: rgba(255, 231, 184, 0.66);
}
.compare-head-actions button:hover,
.compare-foot button:hover {
  border-color: rgba(239, 198, 119, 0.54);
  filter: brightness(1.05);
}
.compare-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 138px minmax(0, 1fr);
  gap: 8px;
  min-height: 0;
  padding: 10px 26px 6px;
}
.compare-side {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  min-width: 0;
  min-height: 0;
  padding: 12px 14px 8px;
  background:
    radial-gradient(circle at 50% 48%, rgba(33, 62, 88, 0.26), transparent 63%),
    linear-gradient(180deg, rgba(13, 27, 43, 0.72), rgba(5, 13, 23, 0.68));
  border: 1px solid rgba(126, 159, 190, 0.16);
  border-radius: 14px;
}
.compare-side-ancient { border-color: rgba(207, 169, 99, 0.24); }
.compare-side-modern { border-color: rgba(115, 174, 214, 0.22); }
.compare-side-head {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 38px;
}
.compare-era {
  display: grid;
  place-items: center;
  width: 39px;
  height: 39px;
  color: #f0d29a;
  border: 1px solid rgba(221, 182, 108, 0.48);
  border-radius: 50%;
  font: 500 15px var(--serif);
}
.compare-side-head b {
  display: block;
  color: #eef1f4;
  font: 500 14px var(--serif);
  letter-spacing: 1.5px;
}
.compare-side-head small {
  display: block;
  margin-top: 3px;
  color: rgba(137, 161, 183, 0.66);
  font-size: 9.5px;
  letter-spacing: 0.8px;
}
.compare-canvas-wrap {
  position: relative;
  min-height: 0;
}
.compare-canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.compare-side-foot {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  padding-top: 5px;
  border-top: 1px solid rgba(133, 171, 205, 0.12);
}
.compare-side-foot span {
  color: #e9c57d;
  font: 600 12px var(--sans);
  letter-spacing: 0.6px;
}
.compare-side-foot small {
  color: rgba(126, 151, 174, 0.58);
  font-size: 9px;
  letter-spacing: 0.5px;
}
.compare-bridge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 0;
  text-align: center;
}
.compare-bridge-line {
  width: 1px;
  height: clamp(24px, 7vh, 70px);
  background: linear-gradient(180deg, transparent, rgba(213, 177, 105, 0.5), transparent);
}
.compare-delta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 12px 7px;
}
.compare-delta small {
  color: rgba(147, 169, 190, 0.62);
  font-size: 9px;
  letter-spacing: 1.4px;
}
.compare-delta strong {
  color: #f1cf8c;
  font: 500 clamp(21px, 2.1vw, 32px) var(--serif);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 22px rgba(239, 198, 119, 0.19);
}
.compare-delta span {
  color: rgba(176, 193, 209, 0.68);
  font-size: 9px;
  letter-spacing: 0.6px;
}
.compare-bridge p {
  max-width: 112px;
  margin: 6px 0;
  color: rgba(145, 166, 185, 0.62);
  font: 10.5px/1.75 var(--serif);
  letter-spacing: 0.7px;
}
.compare-foot {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 8px 26px 13px;
}
.compare-foot p {
  margin: 0;
  color: rgba(133, 157, 178, 0.62);
  font-size: 9.5px;
  line-height: 1.55;
  text-align: center;
}
.compare-foot p b {
  margin-right: 7px;
  color: rgba(226, 207, 171, 0.82);
  font-weight: 500;
}

@media (max-width: 1180px) and (min-width: 981px) {
  .intro-actions button {
    flex: 1 1 0;
    min-width: 0;
    padding-left: 10px;
    padding-right: 10px;
  }
  .intro-actions button small { display: none; }
  .compare-body {
    grid-template-columns: minmax(0, 1fr) 108px minmax(0, 1fr);
  }
  .compare-bridge p { display: none; }
  .compare-delta strong { font-size: 20px; }
}

@media (max-width: 980px) {
  .compare-head {
    grid-template-columns: 1fr auto;
    gap: 8px;
    padding: 11px 16px 10px;
  }
  .compare-brand { display: none; }
  .compare-title-wrap { text-align: left; }
  .compare-title-wrap h2 { font-size: 20px; }
  .compare-kicker { font-size: 9px; letter-spacing: 2px; }
  .compare-body {
    grid-template-columns: minmax(0, 1fr) 88px minmax(0, 1fr);
    padding: 8px 12px 4px;
  }
  .compare-side { padding: 9px 9px 6px; }
  .compare-bridge p { display: none; }
  .compare-delta strong { font-size: 20px; }
  .compare-foot { padding: 6px 12px 10px; }
}

@media (max-width: 900px) {
  #intro {
    justify-content: center;
    align-items: flex-end;
    padding: 0 0 4.5vh;
    text-align: center;
  }
  .intro-veil {
    background:
      linear-gradient(180deg, rgba(4, 9, 16, 0.08) 0%, rgba(4, 9, 16, 0.22) 43%, rgba(4, 9, 16, 0.94) 68%, #040912 100%);
  }
  .intro-shell {
    width: calc(100vw - 34px);
    text-align: center;
    animation-name: introRise;
  }
  .intro-eyebrow { margin-bottom: 8px; font-size: 9px; letter-spacing: 3px; }
  .intro-title {
    justify-content: center;
    font-size: clamp(66px, 19vw, 94px);
  }
  .intro-sub {
    margin: 8px auto 0;
    max-width: 340px;
    font-size: 13px;
    letter-spacing: 1.3px;
  }
  .intro-rule { margin: 12px auto 9px; }
  .intro-copy { display: none; }
  .intro-actions {
    justify-content: center;
    margin-top: 13px;
  }
  .intro-tertiary { margin-top: 10px; }
  .intro-hint { display: none; }
  .intro-transit {
    top: 2.4vh;
    right: 16px;
    bottom: auto;
    grid-template-columns: auto 28px auto;
    gap: 6px;
    font-size: 9px;
  }
  .intro-transit i { width: 28px; }
  .intro-transit small { font-size: 8px; letter-spacing: 0.7px; }
  .intro-foot { display: none; }
}

@media (min-width: 700px) and (max-width: 900px) {
  .intro-title { font-size: clamp(64px, 11vw, 82px); }
  .intro-sub { margin-top: 5px; font-size: 12px; }
  .intro-rule { margin: 8px auto 7px; }
  .intro-actions { margin-top: 10px; }
}

@media (max-width: 760px) {
  #intro {
    justify-content: center;
    align-items: flex-end;
    padding: 0 0 4.5vh;
    text-align: center;
  }
  .intro-veil {
    background:
      linear-gradient(180deg, rgba(4, 9, 16, 0.08) 0%, rgba(4, 9, 16, 0.22) 43%, rgba(4, 9, 16, 0.94) 68%, #040912 100%);
  }
  .intro-shell {
    width: calc(100vw - 34px);
    text-align: center;
    animation-name: introRise;
  }
  .intro-eyebrow { margin-bottom: 8px; font-size: 9px; letter-spacing: 3px; }
  .intro-title {
    justify-content: center;
    font-size: clamp(66px, 19vw, 94px);
  }
  .intro-sub {
    margin: 8px auto 0;
    max-width: 340px;
    font-size: 13px;
    letter-spacing: 1.3px;
  }
  .intro-rule { margin: 12px auto 9px; }
  .intro-copy { display: none; }
  .intro-actions {
    justify-content: center;
    margin-top: 13px;
  }
  .intro-tertiary { margin-top: 10px; }
  .intro-hint { display: none; }
  .intro-transit {
    top: 2.4vh;
    right: 16px;
    bottom: auto;
    grid-template-columns: auto 28px auto;
    gap: 6px;
    font-size: 9px;
  }
  .intro-transit i { width: 28px; }
  .intro-transit small { font-size: 8px; letter-spacing: 0.7px; }
  .intro-foot { display: none; }
  #ambientNote small { display: none; }
  #compare {
    overflow-y: auto;
    grid-template-rows: auto auto auto;
  }
  .compare-head {
    position: sticky;
    top: 0;
    z-index: 3;
    background: rgba(5, 12, 20, 0.94);
    backdrop-filter: blur(9px);
  }
  .compare-head-actions button {
    padding: 6px 8px;
    font-size: 9.5px;
  }
  .compare-body {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 8px 10px;
  }
  .compare-side { min-height: 58vh; }
  .compare-bridge {
    flex-direction: row;
    min-height: 58px;
  }
  .compare-bridge-line {
    width: 38px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(213, 177, 105, 0.5), transparent);
  }
  .compare-delta { flex-direction: row; gap: 7px; padding: 4px 7px; }
  .compare-foot {
    position: sticky;
    bottom: 0;
    background: rgba(5, 12, 20, 0.96);
    grid-template-columns: auto auto;
  }
  .compare-foot p { display: none; }
  .compare-foot #compareNext { justify-self: end; }
}

@media (prefers-reduced-motion: reduce) {
  .intro-shell,
  .intro-title span,
  #ambientNote i {
    animation: none;
  }
}

/* ---------- 手机触控、动态视口与流畅档 ---------- */
@supports (height: 100dvh) {
  html,
  body { height: 100dvh; }
}

body.low-performance .stage-atmosphere i {
  animation: none !important;
}
body.low-performance #panel,
body.low-performance #hud,
body.low-performance .map-controls button,
body.low-performance .compare-head,
body.low-performance .compare-foot {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
body.low-performance #stage::after {
  box-shadow:
    inset 0 0 70px 10px rgba(1, 5, 10, 0.58),
    inset -14px 0 30px rgba(1, 5, 10, 0.28);
}

/* 触屏设备没有键盘，隐藏只对桌面有效的快捷键提示。 */
body.mobile-experience #hud span:nth-child(n + 5) { display: none; }

button,
select,
summary {
  -webkit-tap-highlight-color: transparent;
}
button { touch-action: manipulation; }

@media (max-width: 900px), (pointer: coarse) {
  .map-controls { display: flex; }

  #intro button,
  .experience-actions button,
  .layer-toggle,
  #legend .chip,
  #detail .nav button,
  #detail .star-row,
  .controls button,
  .performance-row select,
  #story button,
  .present-actions button,
  .mission-shell button,
  .compare-shell button,
  #verify button,
  #sources summary,
  .advanced-tools summary {
    min-height: 44px;
  }

  #detail .nav button,
  #story .story-controls button,
  .present-actions button,
  .mission-shell button,
  .compare-shell button,
  #verify button {
    padding-top: 10px;
    padding-bottom: 10px;
  }

  #detail input[type="range"],
  .controls input[type="range"],
  .tour-speed input[type="range"] {
    min-height: 32px;
  }

  @supports (height: 100dvh) {
    #stage {
      height: 52dvh;
    }
  }

  #panel {
    padding-bottom: calc(16px + env(safe-area-inset-bottom));
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }
  #story {
    bottom: calc(16px + env(safe-area-inset-bottom));
  }
  .stage-brand {
    left: calc(16px + env(safe-area-inset-left));
  }
  #perfBadge {
    right: calc(14px + env(safe-area-inset-right));
  }
}

@media (max-width: 560px) {
  #hud {
    left: calc(10px + env(safe-area-inset-left));
    right: calc(10px + env(safe-area-inset-right));
    bottom: calc(8px + env(safe-area-inset-bottom));
    gap: 6px 10px;
    padding: 7px 10px;
    font-size: 10.5px;
  }
  #hud span:nth-child(n + 5) { display: none; }

  .map-controls {
    top: calc(10px + env(safe-area-inset-top));
    right: calc(10px + env(safe-area-inset-right));
    gap: 5px;
  }

  .mansion-rail,
  #story .story-seals {
    grid-template-columns: repeat(7, minmax(44px, 1fr));
    gap: 2px;
    padding-bottom: 2px;
    overflow-x: auto;
    scrollbar-width: none;
    overscroll-behavior-x: contain;
  }
  .mansion-rail::-webkit-scrollbar,
  #story .story-seals::-webkit-scrollbar { display: none; }
  .mansion-rail button,
  #story .story-seals button {
    min-width: 44px;
    min-height: 44px;
  }

  #intro {
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
  }
  .intro-actions button { min-height: 48px; }
}

/* Mobile visual pass: a calmer chart, a lighter control sheet. */
@media (max-width: 560px) {
  body {
    background:
      radial-gradient(circle at 50% 25%, rgba(28, 58, 89, 0.34), transparent 38%),
      #050a12;
  }

  #stage {
    flex: 0 0 58vh;
    height: 58vh;
    min-height: 320px;
    border-bottom: 1px solid rgba(239, 198, 119, 0.12);
  }

  @supports (height: 100dvh) {
    #stage {
      flex-basis: 58dvh;
      height: 58dvh;
    }
  }

  #stage::after {
    box-shadow:
      inset 0 0 76px 9px rgba(1, 5, 10, 0.56),
      inset 0 -28px 42px rgba(4, 9, 16, 0.32);
  }

  #panel {
    z-index: 3;
    margin-top: -14px;
    padding: 20px 14px calc(18px + env(safe-area-inset-bottom));
    gap: 12px;
    border-top: 1px solid rgba(239, 198, 119, 0.2);
    border-radius: 20px 20px 0 0;
    background:
      radial-gradient(circle at 84% 0%, rgba(73, 117, 156, 0.16), transparent 27%),
      linear-gradient(180deg, rgba(13, 25, 41, 0.99), rgba(6, 12, 21, 0.99));
    box-shadow: 0 -18px 50px rgba(0, 0, 0, 0.34);
  }

  #panel header {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: end;
    gap: 12px;
    padding-bottom: 11px;
  }

  #panel header h1 {
    margin: 0;
    font-size: 28px;
    letter-spacing: 3px;
    line-height: 1;
  }

  #panel .sub {
    min-width: 0;
    font-size: 9.5px;
    line-height: 1.45;
    letter-spacing: 0.15px;
    text-align: right;
  }

  .experience-actions { gap: 7px; }
  .primary-action {
    min-height: 50px;
    font-size: 13px;
    letter-spacing: 0.8px;
  }
  .tour-speed {
    padding: 7px 9px 6px;
  }
  .tour-speed-title { font-size: 10.5px; }
  .tour-speed-scale { font-size: 8.5px; }
  .quick-tour-entry,
  .mission-entry,
  .compare-entry {
    min-height: 44px;
  }
  .experience-secondary { gap: 7px; }

  #legend .chips {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 5px;
  }
  #legend .chip {
    padding: 7px 4px;
    font-size: 10.5px;
    letter-spacing: 0;
  }
  #legend .chip i { width: 6px; height: 6px; }
  .mansion-rail { gap: 3px; }
  .mansion-rail button {
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(43, 75, 105, 0.25), rgba(13, 29, 46, 0.35));
  }

  body.mobile-experience #hud {
    left: 50%;
    right: auto;
    bottom: calc(25px + env(safe-area-inset-bottom));
    width: max-content;
    max-width: calc(100% - 96px);
    padding: 6px 11px;
    transform: translateX(-50%);
    justify-content: center;
    border-radius: 999px;
    color: rgba(195, 211, 228, 0.76);
    background: rgba(5, 12, 21, 0.58);
    font-size: 9.5px;
    letter-spacing: 0.1px;
    white-space: nowrap;
  }
  body.mobile-experience #hud span { display: none; }
  body.mobile-experience #hud span:first-child {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  body.mobile-experience #hud b { color: rgba(240, 210, 153, 0.9); }
  body.mobile-experience #perfBadge { display: none; }

  .map-controls button {
    background: rgba(5, 13, 23, 0.68);
    border-color: rgba(151, 184, 214, 0.22);
    border-radius: 13px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  }

  .stage-brand {
    top: 13px;
    left: calc(13px + env(safe-area-inset-left));
  }
  .stage-brand span {
    font-size: 18px;
    letter-spacing: 3px;
  }
}

/* Landscape phones use a two-column layout so the control sheet stays usable. */
@media (max-width: 900px) and (max-height: 520px) and (orientation: landscape) and (pointer: coarse) {
  body { flex-direction: row; }

  #stage {
    flex: 1 1 auto;
    width: auto;
    height: 100vh;
    min-height: 0;
    border-right: 1px solid rgba(239, 198, 119, 0.12);
    border-bottom: 0;
  }

  @supports (height: 100dvh) {
    #stage { height: 100dvh; }
  }

  #panel {
    flex: 0 0 min(42vw, 340px);
    width: min(42vw, 340px);
    height: 100vh;
    margin-top: 0;
    padding: 17px 14px calc(14px + env(safe-area-inset-bottom));
    gap: 12px;
    border-top: 0;
    border-left: 1px solid rgba(239, 198, 119, 0.18);
    border-radius: 0;
    box-shadow: -18px 0 44px rgba(0, 0, 0, 0.3);
  }

  #panel header {
    display: block;
    padding-bottom: 9px;
  }
  #panel header h1 {
    margin: 0 0 4px;
    font-size: 28px;
    line-height: 1;
  }
  #panel .sub {
    font-size: 9px;
    line-height: 1.4;
    text-align: left;
  }

  body.mobile-experience #hud,
  body.mobile-experience #perfBadge {
    display: none;
  }
}