/* ========================================
   CrushieAI 官网 v2 - 深色霓虹科技风
   主题：深蓝黑 + 霓虹青 + 霓虹粉 + 玻璃拟态
   ======================================== */

:root {
  --bg-dark: #0a0a1a;
  --bg-darker: #060612;
  --bg-card: rgba(255, 255, 255, 0.03);
  --neon-cyan: #00f0ff;
  --neon-pink: #ff00aa;
  --neon-purple: #a855f7;
  --neon-blue: #3b82f6;
  --gradient-neon: linear-gradient(135deg, #00f0ff 0%, #ff00aa 100%);
  --gradient-purple: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
  --text-primary: #f0f0ff;
  --text-secondary: #a0a0c0;
  --text-muted: #606080;
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 240, 255, 0.3);
  --shadow-glow-cyan: 0 0 30px rgba(0, 240, 255, 0.3);
  --shadow-glow-pink: 0 0 30px rgba(255, 0, 170, 0.3);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-max: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }
input { font-family: inherit; outline: none; border: none; }

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }

/* 粒子画布 */
.particle-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.4;
}

/* 玻璃拟态通用 */
.glass {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
}

/* 渐变文字 */
.gradient-text {
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-glow {
  background: var(--gradient-neon);
  color: #0a0a1a;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0, 240, 255, 0.3);
  position: relative;
  overflow: hidden;
}
.btn-glow::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s ease;
}
.btn-glow:hover::before { left: 100%; }
.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 240, 255, 0.5);
}

.btn-outline-glow {
  background: transparent;
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}
.btn-outline-glow:hover {
  background: rgba(0, 240, 255, 0.1);
  box-shadow: var(--shadow-glow-cyan);
}

.btn-lg { padding: 16px 36px; font-size: 16px; border-radius: var(--radius-md); }
.btn-xl { padding: 20px 48px; font-size: 18px; border-radius: var(--radius-md); }
.btn-sm { padding: 8px 20px; font-size: 13px; }

/* 区块标题 */
.section-head { margin-bottom: 64px; }
.section-head.center { text-align: center; }
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--neon-cyan);
  margin-bottom: 16px;
  text-transform: uppercase;
  padding: 6px 16px;
  border: 1px solid var(--border-glow);
  border-radius: 100px;
  background: rgba(0, 240, 255, 0.05);
}
.section-title {
  font-size: clamp(30px, 4.5vw, 52px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.section-sub {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
}
.section-head.center .section-sub { margin: 0 auto; }

/* ========================================
   导航栏
   ======================================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: var(--transition);
  padding: 16px 0;
}
.navbar.scrolled {
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  padding: 10px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-link:hover { color: var(--neon-cyan); background: rgba(0, 240, 255, 0.08); }
.nav-link.active { color: var(--neon-cyan); }

.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-download { padding: 8px 22px; font-size: 13px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========================================
   Hero 全屏
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
}
.orb-1 {
  width: 500px; height: 500px;
  background: var(--neon-cyan);
  top: -100px; left: -100px;
  animation: orbFloat1 12s ease-in-out infinite;
}
.orb-2 {
  width: 450px; height: 450px;
  background: var(--neon-pink);
  bottom: -100px; right: -100px;
  animation: orbFloat2 15s ease-in-out infinite;
}
.orb-3 {
  width: 350px; height: 350px;
  background: var(--neon-purple);
  top: 40%; left: 50%;
  transform: translate(-50%, -50%);
  animation: orbFloat3 10s ease-in-out infinite;
}
@keyframes orbFloat1 {
  0%,100% { transform: translate(0,0) scale(1); }
  50% { transform: translate(100px, 50px) scale(1.2); }
}
@keyframes orbFloat2 {
  0%,100% { transform: translate(0,0) scale(1); }
  50% { transform: translate(-80px, -60px) scale(1.15); }
}
@keyframes orbFloat3 {
  0%,100% { transform: translate(-50%,-50%) scale(1); opacity:0.3; }
  50% { transform: translate(-50%,-50%) scale(1.3); opacity:0.5; }
}

.hero-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid var(--border-glow);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--neon-cyan);
  margin-bottom: 32px;
}
.badge-dot {
  width: 8px; height: 8px;
  background: var(--neon-cyan);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { opacity:1; box-shadow:0 0 0 0 rgba(0,240,255,0.5); }
  50% { opacity:0.7; box-shadow:0 0 0 8px rgba(0,240,255,0); }
}

.hero-title {
  font-size: clamp(36px, 6.5vw, 72px);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-mini-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
}
.mini-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.mini-stat strong {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.mini-stat span {
  font-size: 13px;
  color: var(--text-muted);
}
.mini-stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border-glass);
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 1px;
  z-index: 2;
  animation: scrollBounce 2s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}
.scroll-line {
  width: 2px;
  height: 40px;
  background: var(--border-glass);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}
.scroll-dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 12px;
  background: var(--neon-cyan);
  border-radius: 2px;
  animation: scrollDot 2s ease-in-out infinite;
}
@keyframes scrollDot {
  0% { top: -12px; }
  100% { top: 40px; }
}

/* ========================================
   数据信任栏
   ======================================== */
.trust {
  position: relative;
  z-index: 1;
  padding: 64px 0;
  border-top: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
  background: rgba(0, 0, 0, 0.2);
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.trust-icon { font-size: 32px; margin-bottom: 4px; }
.trust-num {
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 900;
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.trust-label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ========================================
   核心功能（交错布局）
   ======================================== */
.features {
  position: relative;
  z-index: 1;
  padding: 120px 0;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 100px;
}
.feature-row:last-child { margin-bottom: 0; }
.feature-row.reverse .feature-text { order: 2; }
.feature-row.reverse .feature-visual { order: 1; }

.feature-text { position: relative; }
.feature-num {
  font-size: 72px;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1px var(--border-glow);
  line-height: 1;
  margin-bottom: 16px;
}
.feature-text h3 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}
.feature-text > p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 24px;
}
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.feature-list li {
  font-size: 14px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.feature-list li::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--neon-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--neon-cyan);
}

.feature-visual { position: relative; }
.visual-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}
.visual-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: var(--gradient-neon);
  border-radius: calc(var(--radius-lg) + 2px);
  z-index: -1;
  opacity: 0.5;
  filter: blur(8px);
}
.visual-card img {
  width: 100%;
  aspect-ratio: 9/16;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.visual-icon-card {
  aspect-ratio: 9/16;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

/* 语音动画 */
.voice-anim {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}
.voice-wave {
  width: 80px;
  height: 80px;
  border: 2px solid var(--neon-cyan);
  border-radius: 50%;
  animation: voicePulse 2s ease-out infinite;
}
.voice-wave.wave-2 { animation-delay: 0.5s; position: absolute; }
.voice-wave.wave-3 { animation-delay: 1s; position: absolute; }
@keyframes voicePulse {
  0% { transform: scale(0.5); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}
.voice-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--neon-cyan);
  margin-top: 40px;
}

/* 记忆节点 */
.memory-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  padding: 32px;
}
.memory-node {
  padding: 14px 20px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-primary);
  animation: memoryFloat 3s ease-in-out infinite;
}
.node-1 { animation-delay: 0s; }
.node-2 { animation-delay: 0.5s; margin-left: 20px; }
.node-3 { animation-delay: 1s; margin-left: 40px; }
.node-4 { animation-delay: 1.5s; margin-left: 20px; }
@keyframes memoryFloat {
  0%,100% { transform: translateX(0); }
  50% { transform: translateX(8px); }
}

/* ========================================
   产品演示
   ======================================== */
.showcase {
  position: relative;
  z-index: 1;
  padding: 120px 0;
  background: var(--bg-darker);
  border-top: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
}

.showcase-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.showcase-phone {
  position: relative;
  display: flex;
  justify-content: center;
}
.phone-frame-glow {
  position: relative;
  width: 300px;
  height: 600px;
  border-radius: 40px;
  padding: 12px;
  background: linear-gradient(135deg, rgba(0,240,255,0.3), rgba(255,0,170,0.3));
  box-shadow: 0 0 60px rgba(0, 240, 255, 0.2), 0 0 100px rgba(255, 0, 170, 0.1);
  animation: phoneGlow 4s ease-in-out infinite;
}
@keyframes phoneGlow {
  0%,100% { box-shadow: 0 0 60px rgba(0,240,255,0.2), 0 0 100px rgba(255,0,170,0.1); }
  50% { box-shadow: 0 0 80px rgba(0,240,255,0.35), 0 0 120px rgba(255,0,170,0.2); }
}
.phone-frame-glow img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 30px;
  transition: opacity 0.3s ease;
}

.float-tag {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: rgba(10, 10, 26, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  z-index: 3;
  animation: tagFloat 4s ease-in-out infinite;
}
.tag-1 { top: 10%; left: -40px; }
.tag-2 { top: 45%; right: -50px; animation-delay: 1s; }
.tag-3 { bottom: 15%; left: -30px; animation-delay: 2s; }
@keyframes tagFloat {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.tag-icon { font-size: 24px; }
.float-tag strong {
  display: block;
  font-size: 14px;
  color: var(--text-primary);
}
.float-tag span {
  font-size: 12px;
  color: var(--text-muted);
}

.showcase-thumbs {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.showcase-thumb {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-align: left;
  width: 100%;
}
.showcase-thumb:hover {
  border-color: var(--neon-cyan);
  transform: translateX(8px);
}
.showcase-thumb.active {
  border-color: var(--neon-cyan);
  background: rgba(0, 240, 255, 0.08);
  box-shadow: var(--shadow-glow-cyan);
}
.showcase-thumb img {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.showcase-thumb span {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}
.showcase-thumb.active span { color: var(--neon-cyan); }

/* ========================================
   角色画廊
   ======================================== */
.characters {
  position: relative;
  z-index: 1;
  padding: 120px 0;
}

.char-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.char-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.char-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-neon);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.char-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-cyan);
}
.char-card:hover::before { transform: scaleX(1); }

.char-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.char-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}
.char-tags {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.char-tags span {
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--neon-cyan);
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid var(--border-glow);
  border-radius: 100px;
}
.char-info > p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}
.char-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.char-more {
  text-align: center;
}
.char-more p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ========================================
   使用流程（时间线）
   ======================================== */
.how-it-works {
  position: relative;
  z-index: 1;
  padding: 120px 0;
  background: var(--bg-darker);
  border-top: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
}

.timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}
.timeline-line {
  position: absolute;
  left: 40px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--neon-cyan), var(--neon-pink), var(--neon-purple));
  opacity: 0.3;
}

.timeline-item {
  position: relative;
  padding-left: 100px;
  margin-bottom: 48px;
}
.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: 20px;
  top: 24px;
  width: 42px;
  height: 42px;
  background: var(--bg-dark);
  border: 2px solid var(--neon-cyan);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
  z-index: 2;
}

.timeline-content {
  padding: 28px;
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.timeline-content:hover {
  border-color: var(--border-glow);
  transform: translateX(8px);
}
.timeline-icon {
  font-size: 32px;
  margin-bottom: 12px;
}
.timeline-content h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}
.timeline-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ========================================
   用户评价
   ======================================== */
.reviews {
  position: relative;
  z-index: 1;
  padding: 120px 0;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.review-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.review-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
}

.review-stars {
  color: #facc15;
  font-size: 18px;
  margin-bottom: 16px;
  letter-spacing: 2px;
}
.review-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 24px;
  font-style: italic;
}
.review-author {
  display: flex;
  align-items: center;
  gap: 14px;
}
.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-author strong {
  display: block;
  font-size: 15px;
  color: var(--text-primary);
}
.review-author span {
  font-size: 12px;
  color: var(--text-muted);
}

/* ========================================
   下载CTA 全屏
   ======================================== */
.cta-full {
  position: relative;
  z-index: 1;
  padding: 140px 24px;
  text-align: center;
  overflow: hidden;
}
.cta-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.cta-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
}
.orb-a {
  width: 600px; height: 600px;
  background: var(--neon-cyan);
  top: -200px; left: -100px;
  animation: orbFloat1 15s ease-in-out infinite;
}
.orb-b {
  width: 500px; height: 500px;
  background: var(--neon-pink);
  bottom: -200px; right: -100px;
  animation: orbFloat2 18s ease-in-out infinite;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}
.cta-title {
  font-size: clamp(30px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 24px;
}
.cta-desc {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}
.cta-meta {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.cta-meta .dot { color: var(--text-muted); }

/* ========================================
   FAQ
   ======================================== */
.faq {
  position: relative;
  z-index: 1;
  padding: 120px 0;
  background: var(--bg-darker);
  border-top: 1px solid var(--border-glass);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--border-glow); }
.faq-item.active {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
}

.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  transition: var(--transition);
}
.faq-q:hover { color: var(--neon-cyan); }
.faq-icon {
  font-size: 24px;
  font-weight: 300;
  color: var(--neon-cyan);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item.active .faq-icon { transform: rotate(45deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-item.active .faq-a { max-height: 400px; }
.faq-a p {
  padding: 0 28px 24px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.9;
}

/* ========================================
   页脚
   ======================================== */
.footer {
  position: relative;
  z-index: 1;
  background: var(--bg-darker);
  padding: 64px 0 32px;
  border-top: 1px solid var(--border-glass);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 60px;
  margin-bottom: 48px;
}

.footer-brand .nav-logo { margin-bottom: 20px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 320px;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: var(--neon-cyan);
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border-glass);
  text-align: center;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.7;
}
.footer-bottom p:last-child { margin-bottom: 0; }

/* ========================================
   回到顶部 & 悬浮按钮
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--gradient-neon);
  color: var(--bg-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0, 240, 255, 0.4);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 240, 255, 0.6);
}

.mobile-fab {
  display: none;
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 14px 32px;
  background: var(--gradient-neon);
  color: var(--bg-dark);
  border-radius: 100px;
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0, 240, 255, 0.5);
  z-index: 998;
  align-items: center;
  gap: 8px;
}

.hide-mobile { display: inline; }

/* ========================================
   响应式
   ======================================== */
@media (max-width: 1024px) {
  .feature-row {
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 80px;
  }
  .feature-row.reverse .feature-text { order: 1; }
  .feature-row.reverse .feature-visual { order: 2; }
  .feature-visual { max-width: 400px; margin: 0 auto; width: 100%; }

  .showcase-wrap {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .showcase-thumbs {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }
  .showcase-thumb { flex: 1; min-width: 200px; max-width: 280px; }

  .char-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: 1fr; }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }

  .nav-links {
    position: fixed;
    top: 0; left: 0; right: 0;
    background: rgba(10, 10, 26, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 80px 24px 24px;
    gap: 4px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    height: 100vh;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-link {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    text-align: center;
  }
  .nav-toggle { display: flex; z-index: 1001; }
  .nav-download { display: none; }

  .hero { padding: 100px 16px 60px; }
  .hero-desc { font-size: 16px; }
  .hero-actions { flex-direction: column; width: 100%; max-width: 320px; margin-left: auto; margin-right: auto; }
  .hero-actions .btn { width: 100%; }
  .hero-mini-stats { gap: 20px; flex-wrap: wrap; }
  .mini-stat-divider { display: none; }
  .hide-mobile { display: none; }

  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }

  .features, .showcase, .characters, .how-it-works, .reviews, .faq { padding: 80px 0; }

  .char-grid { grid-template-columns: 1fr; }

  .timeline-line { left: 24px; }
  .timeline-item { padding-left: 72px; }
  .timeline-dot { left: 4px; width: 40px; height: 40px; }

  .float-tag { display: none; }
  .phone-frame-glow { width: 260px; height: 520px; }

  .footer-cols { grid-template-columns: repeat(2, 1fr); gap: 24px; }

  .back-to-top { bottom: 80px; right: 16px; width: 42px; height: 42px; }
  .mobile-fab { display: flex; }

  .section-head { margin-bottom: 48px; }
}

@media (max-width: 480px) {
  .footer-cols { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .showcase-thumb { min-width: 100%; }
}