/* ========================================================================
 * 阿里淘科技 — Section 布局 (10 大模块的具体样式)
 * ====================================================================== */

/* ========== 全局背景固定层 ========== */
.bg-fixed {
  position: fixed;
  inset: 0;
  z-index: var(--z-bg);
  pointer-events: none;
  overflow: hidden;
}

#bg-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.6;
}

.bg-gradient {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}

.bg-gradient-1 {
  width: 600px;
  height: 600px;
  background: var(--accent-cyan);
  top: -200px;
  left: -200px;
  animation: drift-1 25s ease-in-out infinite;
}

.bg-gradient-2 {
  width: 700px;
  height: 700px;
  background: var(--accent-magenta);
  bottom: -200px;
  right: -200px;
  animation: drift-2 30s ease-in-out infinite;
}

.bg-gradient-3 {
  width: 500px;
  height: 500px;
  background: var(--accent-purple);
  top: 40%;
  left: 50%;
  animation: drift-3 35s ease-in-out infinite;
}

.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 245, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* ========== Hero ========== */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 120px;
  padding-bottom: 60px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border: 1px solid rgba(0, 245, 255, 0.3);
  border-radius: var(--radius-pill);
  background: rgba(0, 245, 255, 0.05);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--accent-cyan);
  letter-spacing: 0.2em;
  align-self: flex-start;
}

.hero-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-lime);
  box-shadow: 0 0 12px var(--accent-lime);
  animation: pulse 2s infinite;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1;
  letter-spacing: -0.04em;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
}

.hero-title .char {
  display: inline-block;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  filter: drop-shadow(0 0 24px rgba(0, 245, 255, 0.3));
  animation: char-float 4s ease-in-out infinite;
}

.hero-title .char:nth-child(odd)  { animation-delay: 0.2s; }
.hero-title .char:nth-child(even) { animation-delay: 0.4s; }

.hero-sub-cn {
  font-family: var(--font-cn);
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  margin-top: var(--space-3);
}

.hero-sub {
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  color: var(--accent-cyan);
  min-height: 1.6em;
  position: relative;
  display: inline-block;
}

.hero-sub::after {
  content: '▌';
  display: inline-block;
  margin-left: 2px;
  animation: blink 1s infinite;
  color: var(--accent-cyan);
}

.hero-cta {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid var(--glass-border);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-stat-num {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-stat-label {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hero-stat-divider {
  width: 1px;
  height: 32px;
  background: var(--glass-border);
}

.hero-canvas-wrap {
  position: relative;
  aspect-ratio: 1;
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
}

#hero-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hero-canvas-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-corner {
  position: absolute;
  width: 24px;
  height: 24px;
  border: 2px solid var(--accent-cyan);
}

.hero-corner.tl { top: 12px; left: 12px; border-right: 0; border-bottom: 0; }
.hero-corner.tr { top: 12px; right: 12px; border-left: 0; border-bottom: 0; }
.hero-corner.bl { bottom: 12px; left: 12px; border-right: 0; border-top: 0; }
.hero-corner.br { bottom: 12px; right: 12px; border-left: 0; border-top: 0; }

.hero-canvas-label {
  position: absolute;
  top: 20px;
  right: 40px;
  font-size: 10px;
  color: var(--accent-cyan);
  letter-spacing: 0.2em;
  background: rgba(0, 245, 255, 0.05);
  padding: 4px 8px;
  border-radius: 4px;
}

.hero-scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, transparent, var(--accent-cyan));
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--accent-cyan);
  animation: scroll-down 2s ease-in-out infinite;
}

.hero-scroll-text {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.3em;
}

/* ========== Metrics ========== */
.metrics {
  background: linear-gradient(180deg, transparent 0%, rgba(11, 13, 36, 0.3) 50%, transparent 100%);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.metric-card {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: all var(--duration-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.metric-card::after {
  content: '';
  position: absolute;
  bottom: -50%;
  right: -20%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0, 245, 255, 0.15) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--duration-base);
  pointer-events: none;
}

.metric-card:hover::after {
  opacity: 1;
}

.metric-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-cyan);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 0 1px var(--accent-cyan);
}

.metric-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0, 245, 255, 0.15), rgba(176, 38, 255, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-lg);
  color: var(--accent-cyan);
  margin-bottom: var(--space-2);
}

.metric-num {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  line-height: 1;
}

.metric-label {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.metric-bar {
  height: 2px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 2px;
  overflow: hidden;
  margin-top: auto;
}

.metric-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--gradient-primary);
  transition: width 1.5s var(--ease-out);
  box-shadow: 0 0 8px var(--accent-cyan);
}

.metric-card.is-visible .metric-bar-fill {
  width: var(--fill, 75%);
}

/* ========== AI Section ========== */
.ai-tabs {
  padding: var(--space-5);
}

.ai-tabs-nav {
  display: flex;
  position: relative;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--glass-border);
}

.ai-tab {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.ai-tab:hover {
  color: var(--text-primary);
  background: rgba(0, 245, 255, 0.05);
}

.ai-tab.active {
  color: var(--accent-cyan);
  background: rgba(0, 245, 255, 0.1);
  box-shadow: var(--neon-glow-cyan);
}

.ai-tabs-content {
  position: relative;
  min-height: 460px;
}

.ai-panel {
  display: none;
  animation: panel-in 0.4s var(--ease-out);
}

.ai-panel.active {
  display: block;
}

.ai-panel-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-6);
  align-items: center;
}

/* Tab 1: 神经网络训练 */
.ai-train-canvas-wrap {
  position: relative;
  aspect-ratio: 3/2;
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  overflow: hidden;
}

#ai-train-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.ai-train-overlay {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  gap: var(--space-4);
  font-size: var(--fs-xs);
  color: var(--accent-cyan);
  pointer-events: none;
}

.ai-train-stat {
  background: rgba(0, 0, 0, 0.6);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 245, 255, 0.2);
}

.ai-train-stat span {
  color: var(--text-muted);
  margin-right: 4px;
  font-size: 10px;
}

.ai-train-stat b {
  color: var(--accent-cyan);
  font-weight: 700;
}

.ai-train-text h4 {
  margin-bottom: var(--space-3);
  font-family: var(--font-display);
  color: var(--text-primary);
}

.ai-train-text p {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

.ai-feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.ai-feature-list li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}

.ai-feature-list i {
  color: var(--accent-cyan);
  font-size: 12px;
}

/* Tab 2: AI 对话 */
.ai-chat-wrap {
  display: flex;
  flex-direction: column;
  height: 460px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  overflow: hidden;
}

.ai-chat-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: rgba(0, 0, 0, 0.4);
  border-bottom: 1px solid var(--glass-border);
}

.ai-chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: var(--fs-md);
}

.ai-chat-name {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.ai-chat-status {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-lime);
  box-shadow: 0 0 8px var(--accent-lime);
  animation: pulse 2s infinite;
}

.ai-chat-messages {
  flex: 1;
  padding: var(--space-4);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.ai-msg {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
  max-width: 80%;
  animation: msg-in 0.3s var(--ease-out);
}

.ai-msg-bot {
  align-self: flex-start;
}

.ai-msg-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.ai-msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: var(--fs-sm);
  flex-shrink: 0;
}

.ai-msg-user .ai-msg-avatar {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-magenta));
}

.ai-msg-bubble {
  background: rgba(0, 0, 0, 0.4);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  font-size: var(--fs-sm);
  line-height: 1.6;
  color: var(--text-primary);
}

.ai-msg-user .ai-msg-bubble {
  background: rgba(0, 245, 255, 0.1);
  border-color: rgba(0, 245, 255, 0.3);
}

.ai-msg-typing .ai-msg-bubble {
  display: inline-flex;
  gap: 4px;
}

.ai-msg-typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  animation: typing-dot 1.2s infinite;
}

.ai-msg-typing span:nth-child(2) { animation-delay: 0.2s; }
.ai-msg-typing span:nth-child(3) { animation-delay: 0.4s; }

.ai-chat-suggest {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--glass-border);
  background: rgba(0, 0, 0, 0.2);
}

.ai-chat-input {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--glass-border);
  background: rgba(0, 0, 0, 0.4);
}

#ai-chat-input {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-pill);
  color: var(--text-primary);
  font-size: var(--fs-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

#ai-chat-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.1);
}

.ai-chat-send {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--duration-base) var(--ease-out);
}

.ai-chat-send:hover {
  transform: scale(1.1) rotate(-15deg);
  box-shadow: var(--neon-glow-cyan);
}

/* Tab 3: 芯片 */
.ai-chip-wrap {
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  padding: var(--space-4);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

#ai-chip-svg {
  width: 100%;
  height: 100%;
  max-width: 360px;
}

.chip-transistor {
  animation: transistor-blink 3s ease-in-out infinite;
}

.chip-transistor:nth-child(odd) { animation-delay: 0.5s; }
.chip-transistor:nth-child(even) { animation-delay: 1s; }

.chip-core {
  filter: drop-shadow(0 0 12px rgba(255, 0, 110, 0.6));
  animation: core-pulse 2s ease-in-out infinite;
}

.chip-core-ring {
  animation: core-rotate 4s linear infinite;
}

.chip-current {
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
  animation: current-flow 3s linear infinite;
  filter: drop-shadow(0 0 4px currentColor);
}

.chip-circuit path:nth-child(1) { animation-delay: 0s; }
.chip-circuit path:nth-child(2) { animation-delay: 1s; }
.chip-circuit path:nth-child(3) { animation-delay: 2s; }

/* ========== Game Section ========== */
.game-stage {
  padding: var(--space-5);
}

.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.game-stats {
  display: flex;
  gap: var(--space-5);
}

.game-stat {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.game-stat i {
  color: var(--accent-cyan);
  font-size: var(--fs-md);
}

.game-stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.2em;
}

.game-stat-num {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--accent-cyan);
  min-width: 40px;
}

.game-controls {
  display: flex;
  gap: var(--space-2);
}

.game-canvas-wrap {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: radial-gradient(ellipse at center, #0a0e1f 0%, #02030a 100%);
  border: 1px solid var(--glass-border);
}

#game-canvas {
  width: 100%;
  height: auto;
  display: block;
  max-height: 70vh;
}

.game-overlay,
.game-gameover {
  position: absolute;
  inset: 0;
  background: rgba(5, 6, 15, 0.85);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: opacity var(--duration-base);
}

.game-overlay.hidden,
.game-gameover.hidden {
  opacity: 0;
  pointer-events: none;
}

.game-overlay-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.game-overlay-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-2xl);
  color: #fff;
  animation: pulse-glow 2s infinite;
  box-shadow: var(--neon-glow-cyan);
}

.game-overlay-content h3 {
  font-size: var(--fs-2xl);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.game-overlay-content p {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
}

.game-hint {
  display: flex;
  justify-content: center;
  gap: var(--space-5);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--glass-border);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.game-hint kbd {
  display: inline-block;
  padding: 2px 8px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--glass-border);
  border-radius: 4px;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  margin: 0 2px;
}

/* ========== Music Section ========== */
.music-stage {
  padding: var(--space-5);
}

.music-info {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--glass-border);
}

.music-art {
  flex-shrink: 0;
}

.music-art-disc {
  position: relative;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: disc-rotate 8s linear infinite;
  animation-play-state: paused;
}

.music-art-disc.playing {
  animation-play-state: running;
}

.music-art-disc::before {
  content: '';
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: var(--bg-secondary);
}

.music-art-inner {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent-magenta);
  position: relative;
  z-index: 1;
}

.music-art-glow {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  background: var(--gradient-primary);
  filter: blur(20px);
  opacity: 0;
  transition: opacity var(--duration-base);
  z-index: -1;
}

.music-art-disc.playing + .music-art-glow,
.music-art-disc.playing .music-art-glow {
  opacity: 0.6;
  animation: pulse 2s infinite;
}

.music-meta {
  flex: 1;
}

.music-track-name {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.music-track-artist {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.music-track-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: var(--space-1);
  cursor: pointer;
}

.music-track-progress {
  height: 100%;
  width: 0%;
  background: var(--gradient-primary);
  box-shadow: 0 0 8px var(--accent-cyan);
  transition: width 100ms linear;
}

.music-track-time {
  display: flex;
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.music-canvas-wrap {
  position: relative;
  aspect-ratio: 21/9;
  background: radial-gradient(ellipse at center, #0a0e1f 0%, #02030a 100%);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  overflow: hidden;
}

#music-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.music-canvas-hint {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-2);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.2em;
  transition: opacity var(--duration-base);
  pointer-events: none;
}

.music-canvas-hint i {
  font-size: var(--fs-3xl);
  color: var(--accent-cyan);
}

.music-canvas-hint.hidden {
  opacity: 0;
}

.music-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-4);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.music-mode-switch {
  display: flex;
  gap: var(--space-2);
  background: rgba(0, 0, 0, 0.3);
  padding: 4px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--glass-border);
}

.music-mode {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--duration-fast);
}

.music-mode:hover {
  color: var(--text-primary);
}

.music-mode.active {
  background: var(--gradient-primary);
  color: #fff;
}

.music-actions {
  display: flex;
  gap: var(--space-2);
}

/* ========== Metaverse Section ========== */
.meta-stage {
  position: relative;
  aspect-ratio: 16/9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: radial-gradient(ellipse at center, #0a0e1f 0%, #02030a 100%);
}

#meta-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

#meta-canvas:active {
  cursor: grabbing;
}

.meta-hud {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  right: var(--space-3);
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}

.meta-hud-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-pill);
  font-size: 10px;
  color: var(--accent-cyan);
  letter-spacing: 0.2em;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.meta-tip {
  position: absolute;
  bottom: var(--space-3);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-4);
  padding: 6px 14px;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-pill);
  font-size: 10px;
  color: var(--text-secondary);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.meta-tip span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.meta-tip i {
  color: var(--accent-cyan);
}

/* ========== Products ========== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.product-card {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: transform var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
  transform-style: preserve-3d;
  will-change: transform;
}

.product-card:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), var(--neon-glow-cyan);
}

.product-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  border: 1px solid rgba(0, 245, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-2xl);
  color: var(--accent-cyan);
  margin-bottom: var(--space-3);
  transition: all var(--duration-base);
}

.product-card:hover .product-icon {
  transform: rotate(-5deg) scale(1.05);
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--neon-glow-cyan);
}

.product-title {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 700;
  margin: 0;
}

.product-desc {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.6;
}

.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: var(--space-2) 0;
}

.product-features li {
  padding: 2px 8px;
  background: rgba(0, 245, 255, 0.08);
  border: 1px solid rgba(0, 245, 255, 0.2);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent-cyan);
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--accent-cyan);
  margin-top: auto;
  padding-top: var(--space-2);
  transition: all var(--duration-fast);
}

.product-link:hover {
  color: #fff;
  text-shadow: var(--neon-glow-cyan);
}

.product-link i {
  transition: transform var(--duration-base);
}

.product-link:hover i {
  transform: translateX(4px);
}

/* ========== Team ========== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.team-card {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-2);
  transition: all var(--duration-base) var(--ease-out);
}

.team-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-cyan);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3), var(--neon-glow-cyan);
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-3);
  position: relative;
}

.team-avatar[data-color="cyan"] {
  background: linear-gradient(135deg, #00f5ff, #0066ff);
  box-shadow: 0 0 24px rgba(0, 245, 255, 0.4);
}

.team-avatar[data-color="magenta"] {
  background: linear-gradient(135deg, #ff006e, #b026ff);
  box-shadow: 0 0 24px rgba(255, 0, 110, 0.4);
}

.team-avatar[data-color="purple"] {
  background: linear-gradient(135deg, #b026ff, #5b00ff);
  box-shadow: 0 0 24px rgba(176, 38, 255, 0.4);
}

.team-avatar[data-color="lime"] {
  background: linear-gradient(135deg, #a3ff12, #00f5ff);
  box-shadow: 0 0 24px rgba(163, 255, 18, 0.4);
}

.team-avatar::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid transparent;
  background: var(--gradient-primary) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--duration-base);
}

.team-card:hover .team-avatar::after {
  opacity: 1;
  animation: avatar-rotate 4s linear infinite;
}

.team-name {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  margin: 0;
}

.team-role {
  font-size: 10px;
  color: var(--accent-cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.team-bio {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  line-height: 1.5;
}

/* ========== Contact ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  border: 1px solid rgba(0, 245, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: var(--fs-lg);
  flex-shrink: 0;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.contact-value {
  font-size: var(--fs-md);
  color: var(--text-primary);
  transition: color var(--duration-fast);
}

a.contact-value:hover {
  color: var(--accent-cyan);
  text-shadow: var(--neon-glow-cyan);
}

.contact-map {
  margin-top: var(--space-3);
  padding: 0;
  height: 200px;
  overflow: hidden;
  position: relative;
}

.contact-map svg {
  width: 100%;
  height: 100%;
  display: block;
}

.contact-map-label {
  position: absolute;
  bottom: var(--space-3);
  left: var(--space-3);
  padding: 4px 8px;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: 4px;
  font-size: 10px;
  color: var(--accent-cyan);
  letter-spacing: 0.2em;
}

.contact-form {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ========== Footer ========== */
.footer {
  background: linear-gradient(180deg, transparent 0%, rgba(5, 6, 15, 0.8) 100%);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-8) 0 var(--space-5);
  margin-top: var(--space-9);
  position: relative;
  z-index: var(--z-content);
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
  opacity: 0.5;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-lg);
}

.footer-brand .footer-logo svg {
  width: 36px;
  height: 36px;
}

.footer-tagline {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-social {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.footer-social a:hover {
  background: var(--gradient-primary);
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--neon-glow-cyan);
}

.footer-heading {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  padding-top: var(--space-5);
  border-top: 1px solid var(--glass-border);
  text-align: center;
}

.footer-copyright {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}

.footer-bottom p {
  color: var(--text-muted);
}