.zoom-board { display: none; }
.spatial-journey[data-mode="board"] .zoom-board { display: block; }
.spatial-journey[data-mode="board"] .spatial-stage,
.spatial-journey[data-mode="board"] .spatial-caption,
.spatial-journey[data-mode="board"] .spatial-action { display: none; }
.journey-overview[data-journey-preview="board"] .journey-intro,
.journey-overview[data-journey-preview="board"] .journey-heading,
.journey-overview[data-journey-preview="board"] .journey-next-action,
.journey-overview[data-journey-preview="board"] .journey-scope-note,
.journey-overview[data-journey-preview="board"] .journey-legend,
.journey-overview[data-journey-preview="board"] .step-guide { display: none; }
.journey-overview[data-journey-preview="board"] .journey-home-grid { display: block; }
.journey-overview[data-journey-preview="board"] .journey-canvas { width: 100%; }
.spatial-testbar { grid-template-columns: minmax(190px, 1.2fr) repeat(4, minmax(118px, 1fr)); }

.zoom-board {
  overflow: hidden; border: 1px solid rgba(202, 229, 233, .17); border-radius: 20px;
  color: #eef8f7; background: #0a1519;
  box-shadow: inset 0 1px rgba(255, 255, 255, .07), 0 25px 60px rgba(0, 0, 0, .23);
}
.zoom-board-head { position: relative; z-index: 3; display: flex; justify-content: space-between; align-items: end; gap: 20px; padding: 27px 32px 0; }
.zoom-board-head small { color: #b0d2d3; font-size: .63rem; font-weight: 760; letter-spacing: .16em; }
.zoom-board-head h2 { margin: 5px 0 3px; font-size: 1.55rem; font-weight: 590; }
.zoom-board-head p, .zoom-board-head > span { margin: 0; color: #9db7b9; font-size: .72rem; }
.zoom-board-head > span { white-space: nowrap; }
.zoom-board-scene {
  position: relative; height: clamp(520px, 50vw, 640px); overflow: hidden; isolation: isolate;
  background: radial-gradient(ellipse at 48% 38%, rgba(70, 112, 120, .13), transparent 55%),
    linear-gradient(180deg, #101f23 0%, #0b181c 57%, #071115 100%);
}
.zoom-board-horizon { position: absolute; inset: 0; pointer-events: none; }
.zoom-board-horizon::before {
  content: ""; position: absolute; left: -20%; right: -20%; top: 31%; bottom: -50%;
  transform: perspective(600px) rotateX(68deg); transform-origin: center top;
  background-image: linear-gradient(rgba(184, 226, 231, .08) 1px, transparent 1px), linear-gradient(90deg, rgba(184, 226, 231, .06) 1px, transparent 1px);
  background-size: 70px 70px; opacity: .31; mask-image: linear-gradient(transparent, black 35%, transparent 82%);
}
.zoom-board-horizon::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 31% 65%, rgba(210, 250, 250, .08), transparent 34%),
    linear-gradient(90deg, rgba(3, 9, 12, .53), transparent 32%, transparent 74%, rgba(3, 9, 12, .72));
}
.zoom-board-map {
  position: absolute; inset: 0; transform-origin: 31% 64%;
  transition: transform .74s cubic-bezier(.17, .76, .18, 1), opacity .6s ease, filter .6s ease;
}
.zoom-board-map svg {
  position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none;
  transform: translateX(var(--rail-shift, 0%));
  clip-path: inset(0 var(--rail-clip-right, 0%) 0 0);
  transition: transform .68s cubic-bezier(.2, .72, .2, 1), clip-path .68s cubic-bezier(.2, .72, .2, 1);
}
.zoom-board-map svg path { fill: none; vector-effect: non-scaling-stroke; }
.zoom-board-rail-halo { stroke: rgba(177, 234, 236, .19); stroke-width: 15; filter: blur(12px); }
.zoom-board-rail { stroke: url(#board-rail-glow); stroke-width: 1.5; filter: drop-shadow(0 0 5px rgba(184, 244, 246, .46)); }
.zoom-board-tile {
  position: absolute; left: var(--tile-x, -20%); top: var(--tile-y, 100%); z-index: 1;
  display: grid; align-content: center; justify-items: start; gap: 6px;
  width: clamp(190px, 23vw, 278px); height: 126px; padding: 16px 20px;
  transform: translate(-50%, -50%) scale(var(--tile-scale, .4)) perspective(900px) rotateX(5deg);
  opacity: var(--tile-opacity, 0); border: 1px solid rgba(216, 241, 242, .27); border-radius: 18px;
  color: #eaf6f5; text-align: left; cursor: pointer;
  background: linear-gradient(146deg, rgba(192, 232, 234, .17), rgba(35, 65, 71, .38) 38%, rgba(9, 25, 30, .9)), #15272b;
  box-shadow: inset 0 1px rgba(255, 255, 255, .22), 0 22px 36px rgba(0, 0, 0, .46);
  backdrop-filter: blur(12px);
  transition: left .68s cubic-bezier(.2, .72, .2, 1), top .68s cubic-bezier(.2, .72, .2, 1),
    transform .68s cubic-bezier(.2, .72, .2, 1), opacity .62s ease, border-color .3s ease, box-shadow .3s ease;
}
.zoom-board-tile::before { content: ""; position: absolute; inset: 7px; border: 1px solid rgba(222, 252, 252, .06); border-radius: 12px; pointer-events: none; }
.zoom-board-tile-number { color: #c1e8e9; font-size: .65rem; font-weight: 790; letter-spacing: .14em; }
.zoom-board-tile strong { max-width: 100%; font-size: 1.06rem; font-weight: 620; line-height: 1.16; text-wrap: balance; }
.zoom-board-tile small { color: #a6c0c2; font-size: .65rem; }
.zoom-board-tile em { display: none; margin-top: 2px; color: #ebffff; font-size: .63rem; font-style: normal; font-weight: 680; letter-spacing: .03em; }
.zoom-board-tile.is-optional { border-style: dashed; }
.zoom-board-tile[data-selected="true"] {
  border-color: rgba(236, 255, 255, .79);
  background: linear-gradient(145deg, rgba(195, 231, 232, .26), rgba(38, 72, 77, .62) 47%, rgba(12, 30, 35, .94)), #1b373b;
  box-shadow: inset 0 1px rgba(255, 255, 255, .34), 0 0 0 5px rgba(191, 239, 241, .07),
    0 0 37px rgba(173, 232, 237, .18), 0 28px 48px rgba(0, 0, 0, .49);
}
.zoom-board-tile[data-selected="true"] strong { font-size: 1.2rem; }
.zoom-board-tile[data-selected="true"] em { display: block; }
.zoom-board-tile[data-current="true"] .zoom-board-tile-number { color: #f2ffff; }
.zoom-board-tile:hover, .zoom-board-tile:focus-visible { border-color: #eaffff; box-shadow: 0 0 33px rgba(202, 251, 251, .27), 0 25px 40px rgba(0, 0, 0, .5); outline: none; }
.zoom-board-orientation { position: absolute; z-index: 2; top: 40px; left: 6%; width: min(43%, 480px); display: grid; gap: 8px; pointer-events: none; }
.zoom-board-orientation small { color: #bfe3e5; font-size: .61rem; font-weight: 760; letter-spacing: .15em; }
.zoom-board-orientation strong { color: #f1fbfa; font-size: clamp(1.2rem, 2vw, 1.85rem); font-weight: 550; line-height: 1.1; }
.zoom-board-orientation > span { max-width: 420px; color: #9db5b7; font-size: .73rem; line-height: 1.55; }
.zoom-board-overview-controls { position: absolute; z-index: 3; left: 6%; bottom: 25px; display: flex; align-items: center; gap: 10px; color: #b7d4d5; }
.zoom-board-overview-controls button { width: 38px; height: 38px; border: 1px solid rgba(215, 247, 248, .29); border-radius: 50%; background: rgba(211, 247, 248, .08); color: #ecffff; font-size: 1.15rem; cursor: pointer; }
.zoom-board-overview-controls button:hover { background: rgba(211, 247, 248, .19); }
.zoom-board-overview-controls button:disabled { opacity: .25; cursor: default; }
.zoom-board-overview-controls > span { min-width: 54px; text-align: center; font-size: .72rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.zoom-board-overview-controls small { margin-left: 15px; color: #8da9ac; font-size: .65rem; }
.zoom-board[data-depth="detail"] .zoom-board-map { transform: scale(2.5) translateZ(80px); opacity: .1; filter: blur(8px); pointer-events: none; }
.zoom-board[data-depth="detail"] .zoom-board-orientation,
.zoom-board[data-depth="detail"] .zoom-board-overview-controls { opacity: 0; pointer-events: none; }
.zoom-board-detail { position: absolute; z-index: 4; inset: 0; display: grid; grid-template-columns: 65px minmax(0, 1fr) 65px; align-items: center; gap: 9px; padding: 58px 28px 18px; opacity: 0; transform: translateY(30px) scale(.95); pointer-events: none; transition: opacity .48s ease .11s, transform .64s cubic-bezier(.17, .76, .18, 1); }
.zoom-board[data-depth="detail"] .zoom-board-detail { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.zoom-board-home { position: absolute; top: 15px; left: 31px; padding: 8px 13px; border: 1px solid rgba(210, 241, 242, .4); border-radius: 20px; background: rgba(210, 243, 244, .09); color: #e7fafa; cursor: pointer; font-size: .7rem; }
.zoom-board-arrow { width: 50px; height: 84px; border: 1px solid rgba(210, 240, 241, .28); border-radius: 12px; background: rgba(215, 245, 246, .07); color: #eafafa; font-size: 1.4rem; cursor: pointer; }
.zoom-board-arrow:hover { background: rgba(215, 245, 246, .17); }
.zoom-board-arrow:disabled { opacity: .23; cursor: default; }
.zoom-board-page { align-self: stretch; min-width: 0; overflow-y: auto; padding: 24px 30px; border: 1px solid rgba(217, 247, 247, .25); border-radius: 16px; background: linear-gradient(135deg, rgba(201, 235, 237, .12), rgba(10, 29, 34, .68)), rgba(11, 27, 31, .9); box-shadow: 0 25px 50px rgba(0, 0, 0, .29), inset 0 1px rgba(255, 255, 255, .12); backdrop-filter: blur(20px); }
.zoom-board-page-head { margin-bottom: 11px; }
.zoom-board-page-head small { color: #adcdd0; font-size: .64rem; font-weight: 780; letter-spacing: .13em; }
.zoom-board-foot { display: flex; justify-content: space-between; align-items: center; gap: 15px; padding: 12px 32px 20px; color: #92aeb2; font-size: .64rem; }
.zoom-board-progress { display: flex; align-items: center; gap: 5px; }
.zoom-board-progress i { width: 11px; height: 3px; border-radius: 3px; background: #3d5e64; transition: background .4s ease, width .4s ease, box-shadow .4s ease; }
.zoom-board-progress i[data-past="true"] { background: #9cc5c9; }
.zoom-board-progress i[data-selected="true"] { width: 23px; background: #e5ffff; box-shadow: 0 0 10px rgba(214, 255, 255, .6); }
.zoom-board-progress i[data-current="true"] { outline: 1px solid rgba(226, 255, 255, .55); outline-offset: 2px; }
@media (max-width: 1050px) { .spatial-testbar { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 760px) {
  .spatial-testbar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .zoom-board-head { align-items: start; padding: 20px 20px 0; }
  .zoom-board-head > span { display: none; }
  .zoom-board-scene { height: 590px; }
  .zoom-board-orientation { top: 24px; left: 20px; width: min(72%, 340px); }
  .zoom-board-orientation > span { display: none; }
  .zoom-board-tile { width: 190px; height: 110px; padding: 12px 16px; }
  .zoom-board-tile strong { font-size: .85rem; }
  .zoom-board-tile[data-selected="true"] strong { font-size: 1rem; }
  .zoom-board-overview-controls { left: 20px; bottom: 18px; }
  .zoom-board-overview-controls small { display: none; }
  .zoom-board-detail { grid-template-columns: 35px minmax(0, 1fr) 35px; padding-inline: 6px; gap: 5px; }
  .zoom-board-arrow { width: 34px; height: 55px; }
  .zoom-board-page { padding: 16px; }
  .zoom-board-foot { padding-inline: 20px; }
  .zoom-board-foot > span:first-child, .zoom-board-foot > span:last-child { display: none; }
  .zoom-board-progress { margin: auto; }
}
@media (prefers-reduced-motion: reduce) {
  .zoom-board-map, .zoom-board-map svg, .zoom-board-detail, .zoom-board-tile, .zoom-board-progress i { transition: none; }
}