/* =============================================================
   immersive.css — Phase 3 Immersive AI Wellness Platform
   耀德植研生醫 · 沉浸式體驗共用樣式系統
   ============================================================= */

/* ── Phase 3 Design Tokens ── */
:root {
  --imm-void:     #020D08;
  --imm-deep:     #041409;
  --imm-surface:  #071C12;
  --imm-panel:    rgba(5,22,15,.72);
  --imm-glass:    rgba(0,201,160,.07);
  --imm-glass2:   rgba(255,202,40,.05);
  --imm-border:   rgba(0,201,160,.18);
  --imm-border2:  rgba(255,202,40,.22);
  --neon:         #00E5CC;
  --neon-dim:     rgba(0,229,204,.12);
  --neon-glow:    0 0 24px rgba(0,229,204,.5), 0 0 48px rgba(0,229,204,.25);
  --gold-neon:    #FFD54F;
  --gold-glow:    0 0 20px rgba(255,213,79,.45);
  --plasma:       #7C4DFF;
  --plasma-dim:   rgba(124,77,255,.12);
  --heat:         #FF6D00;
  --bio-green:    #69F0AE;
  --bio-glow:     0 0 20px rgba(105,240,174,.4);
  --spatial-z1:   translateZ(0px);
  --spatial-z2:   translateZ(40px);
  --spatial-z3:   translateZ(80px);
  --spatial-z4:   translateZ(120px);
  --ease-spring:  cubic-bezier(.34,1.56,.64,1);
  --ease-smooth:  cubic-bezier(.4,0,.2,1);
  --ease-expo:    cubic-bezier(.16,1,.3,1);
}

/* ── WebGL Canvas Layer ── */
.webgl-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
}
.webgl-canvas.interactive { pointer-events: auto; }

/* ── Particle Field ── */
.particle-field {
  position: absolute; inset: 0;
  overflow: hidden; pointer-events: none;
}
.particle-field canvas {
  width: 100%; height: 100%;
}

/* ── Spatial Scene Container ── */
.spatial-scene {
  perspective: 1200px;
  perspective-origin: 50% 40%;
  transform-style: preserve-3d;
}
.spatial-layer {
  transform-style: preserve-3d;
  transition: transform 1s var(--ease-expo);
}

/* ── Glass Panels ── */
.glass-panel {
  background: var(--imm-panel);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--imm-border);
  border-radius: 16px;
  position: relative;
  overflow: hidden;
}
.glass-panel::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg,
    rgba(0,229,204,.06) 0%,
    transparent 50%,
    rgba(255,202,40,.04) 100%);
  pointer-events: none;
}
.glass-panel.gold-accent {
  border-color: var(--imm-border2);
}
.glass-panel.gold-accent::before {
  background: linear-gradient(135deg,
    rgba(255,213,79,.08) 0%,
    transparent 60%,
    rgba(0,229,204,.04) 100%);
}

/* ── Neon Typography ── */
.neon-text {
  color: var(--neon);
  text-shadow: var(--neon-glow);
}
.neon-text-gold {
  color: var(--gold-neon);
  text-shadow: var(--gold-glow);
}
.neon-label {
  font-size: 10px; letter-spacing: 4px;
  text-transform: uppercase; font-weight: 700;
  color: var(--neon); opacity: .8;
}
.neon-label.gold { color: var(--gold-neon); }

/* ── Scanning Line Effect ── */
.scan-line {
  position: absolute; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent, var(--neon), transparent);
  animation: scanMove 4s linear infinite;
  opacity: .5; pointer-events: none;
}
@keyframes scanMove {
  from { top: 0; opacity: 0; }
  10%  { opacity: .5; }
  90%  { opacity: .5; }
  to   { top: 100%; opacity: 0; }
}

/* ── HUD Grid Overlay ── */
.hud-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,229,204,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,204,.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hud-grid.fine {
  background-size: 20px 20px;
  opacity: .5;
}

/* ── Corner Brackets ── */
.corner-bracket {
  position: absolute;
  width: 24px; height: 24px;
  border-color: var(--neon);
  border-style: solid;
  opacity: .6;
}
.corner-bracket.tl { top: 12px; left: 12px; border-width: 2px 0 0 2px; }
.corner-bracket.tr { top: 12px; right: 12px; border-width: 2px 2px 0 0; }
.corner-bracket.bl { bottom: 12px; left: 12px; border-width: 0 0 2px 2px; }
.corner-bracket.br { bottom: 12px; right: 12px; border-width: 0 2px 2px 0; }

/* ── Data Tag / Chip ── */
.data-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px 4px 8px;
  background: var(--neon-dim);
  border: 1px solid var(--imm-border);
  border-radius: 40px;
  font-size: 11px; font-weight: 600;
  color: var(--neon); letter-spacing: .3px;
}
.data-tag .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--neon);
  animation: pulse-dot 1.6s ease infinite;
  flex-shrink: 0;
}
@keyframes pulse-dot {
  0%,100% { opacity: 1; transform: scale(1); }
  50%     { opacity: .5; transform: scale(1.4); }
}

/* ── Progress Arc ── */
.arc-progress {
  position: relative; display: inline-flex;
  align-items: center; justify-content: center;
}
.arc-progress svg { transform: rotate(-90deg); }
.arc-progress .arc-track { fill: none; stroke: rgba(0,229,204,.15); }
.arc-progress .arc-fill  {
  fill: none; stroke: var(--neon);
  stroke-linecap: round;
  stroke-dasharray: 283;
  stroke-dashoffset: 283;
  transition: stroke-dashoffset 1.6s var(--ease-expo);
  filter: drop-shadow(0 0 6px var(--neon));
}
.arc-progress .arc-value {
  position: absolute;
  font-size: 20px; font-weight: 800;
  color: #fff; letter-spacing: -.5px;
}

/* ── Holographic Card ── */
.holo-card {
  position: relative;
  background: var(--imm-panel);
  border: 1px solid var(--imm-border);
  border-radius: 20px;
  overflow: hidden;
  transition: transform .5s var(--ease-spring),
              box-shadow .5s ease;
  cursor: pointer;
  transform-style: preserve-3d;
}
.holo-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 32px 64px rgba(0,0,0,.5),
              0 0 40px rgba(0,229,204,.15);
}
.holo-card .holo-shimmer {
  position: absolute; inset: 0;
  background: linear-gradient(
    105deg,
    transparent 40%,
    rgba(0,229,204,.08) 50%,
    transparent 60%
  );
  background-size: 200% 100%;
  animation: shimmer 3s ease infinite;
  pointer-events: none;
}
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ── 3D Product Viewer ── */
.product-viewer-wrap {
  position: relative;
  width: 100%; aspect-ratio: 1/1;
  max-width: 480px;
}
#product-3d-canvas {
  width: 100%; height: 100%;
  border-radius: 20px;
  cursor: grab;
}
#product-3d-canvas:active { cursor: grabbing; }
.viewer-hud {
  position: absolute;
  pointer-events: none;
}
.viewer-hud.top-left    { top: 20px; left: 20px; }
.viewer-hud.top-right   { top: 20px; right: 20px; }
.viewer-hud.bottom-left { bottom: 20px; left: 20px; }
.viewer-controls {
  position: absolute; bottom: 20px; right: 20px;
  display: flex; flex-direction: column; gap: 8px;
  pointer-events: auto;
}
.viewer-btn {
  width: 36px; height: 36px;
  background: rgba(5,22,15,.8);
  border: 1px solid var(--imm-border);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--neon); font-size: 14px;
  cursor: pointer; transition: all .2s ease;
}
.viewer-btn:hover {
  background: var(--neon-dim);
  border-color: var(--neon);
}

/* ── Ingredient Node ── */
.ingredient-node {
  position: absolute;
  transform: translate(-50%,-50%);
  z-index: 10; cursor: pointer;
}
.ingredient-node .node-ring {
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 2px solid var(--neon);
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,229,204,.1);
  animation: ring-pulse 2s ease infinite;
  transition: all .3s ease;
  position: relative;
}
.ingredient-node:hover .node-ring {
  background: rgba(0,229,204,.25);
  box-shadow: var(--neon-glow);
}
@keyframes ring-pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(0,229,204,.4); }
  50%     { box-shadow: 0 0 0 12px rgba(0,229,204,0); }
}
.ingredient-node .node-icon { font-size: 20px; }
.ingredient-node .node-label {
  position: absolute; top: calc(100% + 8px); left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 11px; letter-spacing: 1px;
  color: var(--neon); font-weight: 600;
  background: rgba(4,20,9,.9);
  border: 1px solid var(--imm-border);
  padding: 3px 10px; border-radius: 20px;
  pointer-events: none;
}

/* ── Tooltip Panel ── */
.tooltip-panel {
  position: absolute; z-index: 20;
  min-width: 240px;
  background: rgba(4,20,9,.95);
  border: 1px solid var(--imm-border);
  border-radius: 12px;
  padding: 16px 20px;
  backdrop-filter: blur(20px);
  opacity: 0; visibility: hidden;
  transform: translateY(10px) scale(.96);
  transition: all .3s var(--ease-smooth);
  pointer-events: none;
}
.tooltip-panel.show {
  opacity: 1; visibility: visible;
  transform: translateY(0) scale(1);
}
.tooltip-panel h4 {
  color: var(--neon); font-size: 13px;
  letter-spacing: 1px; margin-bottom: 6px;
  font-weight: 700;
}
.tooltip-panel p {
  color: rgba(255,255,255,.65);
  font-size: 12px; line-height: 1.7;
}
.tooltip-panel .tp-stat {
  display: flex; align-items: center; gap: 8px;
  margin-top: 10px; padding-top: 10px;
  border-top: 1px solid var(--imm-border);
}
.tp-stat-val {
  font-size: 22px; font-weight: 800;
  color: var(--gold-neon); line-height: 1;
}
.tp-stat-lbl { font-size: 10px; color: rgba(255,255,255,.4); letter-spacing: 1px; }

/* ── AI Avatar ── */
#ai-avatar-wrap {
  position: fixed;
  bottom: 104px; right: 32px;
  z-index: 9000;
  display: flex; flex-direction: column;
  align-items: flex-end; gap: 16px;
}
.avatar-bubble {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FFCA28, #FFB300);
  border: 2px solid rgba(255,255,255,.35);
  box-shadow: 0 8px 28px rgba(255,202,40,.55);
  cursor: pointer;
  position: relative;
  transition: transform .3s var(--ease-spring), box-shadow .3s ease;
  overflow: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  text-decoration: none;
  color: #071C12;
}
.avatar-bubble:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 36px rgba(255,180,0,.65);
}
.avatar-bubble .bubble-icon { font-size: 22px; line-height: 1; }
.avatar-bubble .bubble-text {
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 10px; font-weight: 700;
  letter-spacing: .5px; color: #071C12;
  white-space: nowrap;
}
/* status-ring removed (no longer robot icon) */
@keyframes spin-slow { to { transform: rotate(360deg); } }
.avatar-bubble .pulse-ring {
  position: absolute; inset: -8px;
  border-radius: 50%;
  border: 1px solid var(--neon);
  animation: avatar-pulse 2s ease infinite;
  pointer-events: none;
}
@keyframes avatar-pulse {
  0%   { opacity: .6; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.5); }
}
.avatar-tooltip {
  position: absolute; bottom: 72px; right: 0;
  background: rgba(4,20,9,.95); border: 1px solid var(--imm-border);
  border-radius: 12px; padding: 10px 14px;
  white-space: nowrap; font-size: 13px;
  color: rgba(255,255,255,.85);
  animation: fadeUp .4s ease;
  pointer-events: none;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Chatbot Panel ── */
#chat-panel {
  position: fixed;
  bottom: 108px; right: 32px;
  width: 380px; max-height: 560px;
  z-index: 8999;
  display: flex; flex-direction: column;
  background: rgba(4,20,9,.97);
  border: 1px solid var(--imm-border);
  border-radius: 20px;
  backdrop-filter: blur(24px);
  box-shadow: 0 24px 64px rgba(0,0,0,.6), 0 0 40px rgba(0,229,204,.1);
  transform: translateY(20px) scale(.95);
  opacity: 0; visibility: hidden;
  transition: all .4s var(--ease-expo);
}
#chat-panel.open {
  transform: translateY(0) scale(1);
  opacity: 1; visibility: visible;
}
.chat-header {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--imm-border);
  flex-shrink: 0;
}
.chat-avatar-sm {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, #004D40, #00C9A0);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; flex-shrink: 0;
  border: 1px solid var(--imm-border);
}
.chat-title { flex: 1; }
.chat-title strong { color: #fff; font-size: 14px; display: block; }
.chat-title span  { color: var(--neon); font-size: 11px; letter-spacing: .5px; }
.chat-close {
  color: rgba(255,255,255,.4); font-size: 20px;
  cursor: pointer; transition: color .2s;
  background: none; border: none; font-family: inherit;
}
.chat-close:hover { color: #fff; }
.chat-messages {
  flex: 1; overflow-y: auto;
  padding: 16px 16px 8px;
  display: flex; flex-direction: column; gap: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--imm-border) transparent;
}
.msg {
  max-width: 85%;
  font-size: 13px; line-height: 1.65;
  animation: msgIn .3s var(--ease-smooth);
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.msg.bot {
  align-self: flex-start;
  background: rgba(0,229,204,.08);
  border: 1px solid rgba(0,229,204,.15);
  border-radius: 4px 16px 16px 16px;
  padding: 10px 14px; color: rgba(255,255,255,.85);
}
.msg.user {
  align-self: flex-end;
  background: linear-gradient(135deg, rgba(0,137,123,.5), rgba(0,201,160,.3));
  border: 1px solid rgba(0,201,160,.25);
  border-radius: 16px 4px 16px 16px;
  padding: 10px 14px; color: #fff;
}
.msg.bot .msg-label {
  font-size: 10px; letter-spacing: 1px;
  color: var(--neon); font-weight: 600; margin-bottom: 4px;
}
.typing-dots {
  display: flex; gap: 4px; padding: 12px 14px;
}
.typing-dots span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--neon); opacity: .4;
  animation: typing-bounce .8s ease infinite;
}
.typing-dots span:nth-child(2) { animation-delay: .15s; }
.typing-dots span:nth-child(3) { animation-delay: .3s; }
@keyframes typing-bounce {
  0%,100% { transform: translateY(0); opacity: .4; }
  50%     { transform: translateY(-4px); opacity: 1; }
}
.chat-quick-btns {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding: 8px 16px;
  border-top: 1px solid rgba(0,229,204,.06);
}
.chat-quick-btn {
  padding: 5px 12px; border-radius: 20px;
  background: rgba(0,229,204,.06);
  border: 1px solid rgba(0,229,204,.18);
  color: var(--neon); font-size: 11px; letter-spacing: .3px;
  cursor: pointer; transition: all .2s ease;
  font-family: inherit;
}
.chat-quick-btn:hover {
  background: rgba(0,229,204,.15);
  border-color: var(--neon);
}
.chat-input-area {
  display: flex; gap: 8px; align-items: center;
  padding: 12px 16px;
  border-top: 1px solid var(--imm-border);
  flex-shrink: 0;
}
.chat-input {
  flex: 1; background: rgba(0,229,204,.06);
  border: 1px solid rgba(0,229,204,.15);
  border-radius: 12px; padding: 10px 14px;
  color: #fff; font-size: 13px; font-family: inherit;
  outline: none; resize: none; min-height: 40px; max-height: 80px;
  transition: border-color .2s;
}
.chat-input::placeholder { color: rgba(255,255,255,.25); }
.chat-input:focus { border-color: var(--neon); }
.chat-send {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, #00897B, #00C9A0);
  border: none; color: #fff; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: filter .2s, transform .2s;
  font-family: inherit;
}
.chat-send:hover { filter: brightness(1.1); transform: scale(1.05); }

/* ── Virtual Space Navigation ── */
.virtual-nav {
  display: flex; gap: 4px;
  background: rgba(4,20,9,.9);
  border: 1px solid var(--imm-border);
  border-radius: 12px; padding: 6px;
  backdrop-filter: blur(16px);
}
.vn-btn {
  padding: 8px 18px; border-radius: 8px;
  font-size: 12px; letter-spacing: .8px;
  color: rgba(255,255,255,.55); cursor: pointer;
  transition: all .3s ease; font-family: inherit;
  border: none; background: none; white-space: nowrap;
}
.vn-btn.active, .vn-btn:hover {
  background: rgba(0,229,204,.12);
  color: var(--neon);
}
.vn-btn.active {
  background: rgba(0,229,204,.18);
  box-shadow: 0 0 12px rgba(0,229,204,.15);
}

/* ── Stats Grid ── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px;
}
.stat-box {
  background: var(--imm-glass);
  border: 1px solid var(--imm-border);
  border-radius: 12px; padding: 16px 20px;
  text-align: center;
  transition: all .3s ease;
}
.stat-box:hover {
  background: var(--neon-dim);
  border-color: var(--neon);
  transform: translateY(-2px);
}
.stat-box .val {
  font-size: 28px; font-weight: 800;
  color: var(--neon); line-height: 1; margin-bottom: 4px;
  text-shadow: 0 0 20px rgba(0,229,204,.4);
}
.stat-box .val.gold { color: var(--gold-neon); text-shadow: 0 0 20px rgba(255,213,79,.4); }
.stat-box .lbl {
  font-size: 10px; letter-spacing: 1.5px;
  color: rgba(255,255,255,.4); text-transform: uppercase;
}

/* ── Timeline Scroll ── */
.imm-timeline {
  position: relative;
  padding-left: 40px;
}
.imm-timeline::before {
  content: '';
  position: absolute; left: 12px; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom,
    transparent, var(--neon) 10%, var(--neon) 90%, transparent);
  opacity: .4;
}
.timeline-item {
  position: relative;
  padding-bottom: 48px;
  opacity: 0; transform: translateX(-20px);
  transition: all .8s var(--ease-expo);
}
.timeline-item.visible {
  opacity: 1; transform: translateX(0);
}
.timeline-dot {
  position: absolute; left: -34px; top: 4px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 12px var(--neon);
  border: 2px solid var(--imm-surface);
}
.timeline-year {
  font-size: 10px; letter-spacing: 3px;
  color: var(--neon); margin-bottom: 6px;
  font-weight: 600; text-transform: uppercase;
}
.timeline-title {
  font-family: 'Noto Serif TC', serif;
  font-size: 18px; color: #fff; margin-bottom: 8px;
}
.timeline-body {
  font-size: 14px; color: rgba(255,255,255,.55); line-height: 1.75;
}

/* ── Health Metric Cards ── */
.metric-card {
  background: var(--imm-panel);
  border: 1px solid var(--imm-border);
  border-radius: 16px; padding: 20px;
  position: relative; overflow: hidden;
  transition: all .3s ease;
}
.metric-card:hover {
  border-color: var(--neon);
  box-shadow: 0 0 24px rgba(0,229,204,.1);
}
.metric-card .mc-icon {
  font-size: 28px; margin-bottom: 10px;
}
.metric-card .mc-label {
  font-size: 10px; letter-spacing: 2px;
  color: rgba(255,255,255,.4); text-transform: uppercase;
  margin-bottom: 4px;
}
.metric-card .mc-val {
  font-size: 36px; font-weight: 800;
  color: #fff; line-height: 1; margin-bottom: 4px;
}
.metric-card .mc-unit {
  font-size: 12px; color: rgba(255,255,255,.4);
  margin-bottom: 12px;
}
.metric-card .mc-bar {
  height: 4px; background: rgba(255,255,255,.08);
  border-radius: 2px; overflow: hidden;
}
.metric-card .mc-fill {
  height: 100%; border-radius: 2px;
  background: linear-gradient(90deg, var(--neon), #00897B);
  transition: width 1.2s var(--ease-expo);
  box-shadow: 0 0 8px rgba(0,229,204,.5);
}
.metric-card .mc-fill.gold {
  background: linear-gradient(90deg, var(--gold-neon), #FF8F00);
  box-shadow: 0 0 8px rgba(255,213,79,.5);
}
.metric-card .mc-trend {
  position: absolute; top: 16px; right: 16px;
  font-size: 11px; font-weight: 700;
  padding: 2px 8px; border-radius: 20px;
}
.mc-trend.up   { color: var(--bio-green); background: rgba(105,240,174,.12); }
.mc-trend.down { color: #FF6B6B; background: rgba(255,107,107,.12); }
.mc-trend.flat { color: rgba(255,255,255,.4); background: rgba(255,255,255,.06); }

/* ── Product Card 3D ── */
.product-card-3d {
  background: var(--imm-panel);
  border: 1px solid var(--imm-border);
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: all .5s var(--ease-expo);
  transform-style: preserve-3d;
}
.product-card-3d:hover {
  transform: translateY(-12px) rotateX(3deg);
  border-color: var(--neon);
  box-shadow:
    0 40px 80px rgba(0,0,0,.5),
    0 0 40px rgba(0,229,204,.15),
    inset 0 1px 0 rgba(255,255,255,.1);
}
.product-card-3d .pc-image {
  position: relative; aspect-ratio: 1/1;
  overflow: hidden;
}
.product-card-3d .pc-image img {
  width: 100%; height: 100%; object-fit: contain;
  padding: 20px;
  transition: transform .6s var(--ease-expo);
  filter: drop-shadow(0 16px 32px rgba(0,229,204,.2));
}
.product-card-3d:hover .pc-image img {
  transform: scale(1.08) translateY(-4px);
}
.product-card-3d .pc-glow {
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 60%, rgba(0,229,204,.12), transparent 70%);
  pointer-events: none;
  transition: opacity .5s;
}
.product-card-3d:hover .pc-glow { opacity: 2; }
.product-card-3d .pc-body {
  padding: 20px 24px 24px;
}
.product-card-3d .pc-category {
  font-size: 10px; letter-spacing: 2px;
  color: var(--neon); text-transform: uppercase;
  margin-bottom: 6px; font-weight: 600;
}
.product-card-3d .pc-name {
  font-family: 'Noto Serif TC', serif;
  font-size: 18px; color: #fff; margin-bottom: 8px;
  line-height: 1.4;
}
.product-card-3d .pc-desc {
  font-size: 12px; color: rgba(255,255,255,.45);
  line-height: 1.7; margin-bottom: 16px;
}
.product-card-3d .pc-price-row {
  display: flex; align-items: center;
  justify-content: space-between;
}
.product-card-3d .pc-price {
  font-size: 22px; font-weight: 800;
  color: var(--gold-neon);
}
.product-card-3d .pc-price small {
  font-size: 11px; color: rgba(255,255,255,.3);
  font-weight: 400; margin-right: 4px;
}
.product-card-3d .pc-buy {
  padding: 8px 20px; border-radius: 40px;
  background: linear-gradient(135deg, #00897B, #00E5CC);
  color: #fff; font-size: 12px; font-weight: 700;
  letter-spacing: .5px; border: none; cursor: pointer;
  font-family: inherit;
  transition: all .3s ease;
}
.product-card-3d .pc-buy:hover {
  filter: brightness(1.1);
  box-shadow: 0 6px 20px rgba(0,201,160,.4);
  transform: translateY(-1px);
}

/* ── Floating Action Zone ── */
.imm-fab-zone {
  position: fixed; bottom: 32px; left: 32px;
  z-index: 8990;
  display: flex; gap: 12px; align-items: flex-end;
}
.fab-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 20px;
  background: rgba(4,20,9,.92);
  border: 1px solid var(--imm-border);
  border-radius: 40px;
  color: rgba(255,255,255,.75); font-size: 13px;
  cursor: pointer; transition: all .3s ease;
  font-family: inherit;
  backdrop-filter: blur(16px);
}
.fab-btn:hover {
  border-color: var(--neon);
  color: var(--neon);
  background: var(--neon-dim);
}
.fab-btn svg { width: 16px; height: 16px; }

/* ── Immersive Section Base ── */
.imm-section {
  background: var(--imm-void);
  position: relative; overflow: hidden;
}
.imm-section-inner {
  position: relative; z-index: 2;
  max-width: 1400px; margin: 0 auto;
  padding: 100px 64px;
}

/* ── Scroll Reveal for Immersive ── */
.imm-reveal {
  opacity: 0; transform: translateY(48px);
  transition: opacity .9s var(--ease-expo), transform .9s var(--ease-expo);
}
.imm-reveal.from-left  { transform: translateX(-48px); }
.imm-reveal.from-right { transform: translateX(48px); }
.imm-reveal.scale-up   { transform: scale(.92); }
.imm-reveal.visible    { opacity: 1; transform: none; }
.delay-1 { transition-delay: .1s; }
.delay-2 { transition-delay: .2s; }
.delay-3 { transition-delay: .3s; }
.delay-4 { transition-delay: .4s; }
.delay-5 { transition-delay: .5s; }
.delay-6 { transition-delay: .6s; }
.delay-7 { transition-delay: .7s; }
.delay-8 { transition-delay: .8s; }

/* ── Journey Map (Storytelling) ── */
.journey-scene {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden;
}
.journey-panel {
  position: sticky; top: 0;
  height: 100vh; width: 50%;
  display: flex; align-items: center;
  justify-content: center;
}
.journey-content { width: 50%; padding: 120px 64px; }

/* ── Spatial Commerce Grid ── */
.spatial-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 24px;
}
.spatial-slot {
  aspect-ratio: 3/4;
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  cursor: pointer;
  transition: transform .5s var(--ease-expo);
}
.spatial-slot:hover { transform: scale(1.03); }
.spatial-slot.featured { grid-row: span 2; aspect-ratio: unset; }

/* ── Responsiveness ── */
@media (max-width: 1200px) {
  .imm-section-inner { padding: 80px 40px; }
  .spatial-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  .imm-section-inner { padding: 60px 24px; }
  #chat-panel { width: calc(100vw - 48px); right: 24px; }
  #ai-avatar-wrap { bottom: 24px; right: 24px; }
  .spatial-grid { grid-template-columns: 1fr; }
  .journey-panel { display: none; }
  .journey-content { width: 100%; padding: 80px 24px; }
  .stats-row { grid-template-columns: repeat(2,1fr); }
  .spatial-slot.featured { grid-row: span 1; aspect-ratio: 3/4; }
}
@media (max-width: 480px) {
  .imm-section-inner { padding: 48px 20px; }
  #chat-panel { bottom: 96px; right: 16px; width: calc(100vw - 32px); }
  #ai-avatar-wrap { bottom: 20px; right: 16px; }
}