/* ================================
   CSS Reset & Base Variables
   ================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #6C63FF;
  --primary-dark: #5A52E8;
  --secondary: #00D4FF;
  --accent: #FF6B9D;
  --accent2: #FFB347;
  --bg-dark: #060814;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(108, 99, 255, 0.4);
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.65);
  --text-muted: rgba(255, 255, 255, 0.35);
  --gradient-primary: linear-gradient(135deg, #6C63FF 0%, #00D4FF 100%);
  --gradient-accent: linear-gradient(135deg, #FF6B9D 0%, #6C63FF 100%);
  --gradient-warm: linear-gradient(135deg, #FFB347 0%, #FF6B9D 100%);
  --shadow-glow: 0 0 40px rgba(108, 99, 255, 0.3);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB',
    'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ================================
   Scrollbar Styling
   ================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--primary), var(--secondary));
  border-radius: 3px;
}

/* ================================
   Layout Utilities
   ================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108, 99, 255, 0.12);
  border: 1px solid rgba(108, 99, 255, 0.3);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-title.left { text-align: left; }

.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ================================
   Buttons
   ================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-primary);
  color: white;
  padding: 12px 24px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 100%);
  opacity: 0;
  transition: opacity 0.3s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(108, 99, 255, 0.45);
}

.btn-primary:hover::before { opacity: 1; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-secondary);
  padding: 12px 24px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}

.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--text-primary);
  background: rgba(108, 99, 255, 0.08);
}

.btn-large { padding: 16px 32px; font-size: 16px; }

.btn-full { width: 100%; justify-content: center; }

/* ================================
   Navbar
   ================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(6, 8, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon { flex-shrink: 0; }

.logo-text {
  font-size: 18px;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0 auto;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.nav-cta { flex-shrink: 0; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ================================
   Hero Section
   ================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 100px 24px 60px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(108, 99, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108, 99, 255, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.8) 0%, transparent 70%);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: orbFloat 8s ease-in-out infinite;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108, 99, 255, 0.5) 0%, transparent 70%);
  top: -200px;
  left: -200px;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.4) 0%, transparent 70%);
  top: 200px;
  right: -100px;
  animation-delay: -3s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 107, 157, 0.3) 0%, transparent 70%);
  bottom: 100px;
  left: 30%;
  animation-delay: -5s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(20px, -30px) scale(1.05); }
  66% { transform: translate(-15px, 20px) scale(0.95); }
}

.hero > * { position: relative; z-index: 1; }

.hero-content {
  flex: 1;
  max-width: 600px;
  padding-right: 40px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.25);
  border-radius: 100px;
  padding: 8px 16px;
  font-size: 13px;
  color: rgba(108, 99, 255, 0.9);
  font-weight: 500;
  margin-bottom: 28px;
  animation: fadeInDown 0.8s ease both;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(40px, 5.5vw, 70px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

.title-line {
  display: block;
  animation: fadeInUp 0.8s ease both;
}

.title-line:nth-child(1) { animation-delay: 0.1s; }
.title-line:nth-child(2) { animation-delay: 0.2s; }
.title-line:nth-child(3) { animation-delay: 0.3s; }

.hero-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 56px;
  animation: fadeInUp 0.8s ease 0.5s both;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.stat-item {
  flex: 1;
  text-align: center;
}

.stat-item:first-child { text-align: left; }
.stat-item:last-child { text-align: right; }

.stat-number {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-suffix {
  font-size: 20px;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  margin: 0 24px;
}

/* ================================
   Phone Mockup
   ================================ */
.hero-visual {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeInRight 1s ease 0.3s both;
}

.phone-mockup {
  position: relative;
}

.phone-frame {
  width: 280px;
  height: 560px;
  background: linear-gradient(145deg, #1a1a3e, #0d0d24);
  border-radius: 44px;
  border: 2px solid rgba(108, 99, 255, 0.3);
  overflow: hidden;
  position: relative;
  box-shadow:
    0 40px 80px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255,255,255,0.1),
    0 0 0 1px rgba(0,0,0,0.5);
}

.phone-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 28px;
  background: #0d0d24;
  border-radius: 0 0 18px 18px;
  z-index: 10;
}

.phone-screen {
  width: 100%;
  height: 100%;
  padding: 36px 16px 16px;
  overflow: hidden;
}

.app-ui { height: 100%; display: flex; flex-direction: column; gap: 16px; }

.app-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 0;
}

.app-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  flex-shrink: 0;
}

.app-greeting { flex: 1; display: flex; flex-direction: column; gap: 5px; }

.greeting-line {
  height: 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.15);
}

.w-60 { width: 60%; }
.w-40 { width: 40%; }

.app-notif {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.notif-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

.ai-thinking {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 10px 12px;
}

.ai-icon-wrap {
  position: relative;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-pulse {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: rgba(108, 99, 255, 0.2);
  animation: aiPulse 2s ease-in-out infinite;
}

@keyframes aiPulse {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 0.2; }
}

.ai-text { flex: 1; }

.ai-label {
  font-size: 11px;
  color: rgba(108, 99, 255, 0.9);
  font-weight: 500;
  margin-bottom: 6px;
}

.ai-bar {
  height: 4px;
  background: rgba(108, 99, 255, 0.2);
  border-radius: 2px;
  overflow: hidden;
}

.ai-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--gradient-primary);
  border-radius: 2px;
  animation: aiBarFill 3s ease-in-out infinite;
}

@keyframes aiBarFill {
  0% { width: 0%; }
  60% { width: 85%; }
  80% { width: 95%; }
  100% { width: 0%; }
}

.match-cards { display: flex; flex-direction: column; gap: 10px; flex: 1; }

.match-card {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  transition: var(--transition);
}

.match-card-1 { border-color: rgba(108, 99, 255, 0.3); background: rgba(108, 99, 255, 0.08); }
.match-card-2 { animation: slideInCard 0.8s ease 1.5s both; }

@keyframes slideInCard {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.match-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  flex-shrink: 0;
}

.av1 { background: linear-gradient(135deg, #FF6B9D, #FFB347); }
.av2 { background: linear-gradient(135deg, #00D4FF, #6C63FF); }

.match-info { flex: 1; min-width: 0; }

.match-name {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.match-tags { display: flex; gap: 4px; margin-top: 4px; }

.tag {
  font-size: 9px;
  background: rgba(255,255,255,0.08);
  border-radius: 100px;
  padding: 2px 6px;
  color: var(--text-secondary);
}

.match-score { flex-shrink: 0; }

.app-action-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 8px 0;
}

.action-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
}

.skip { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); }

.main-action {
  width: 52px;
  height: 52px;
  background: var(--gradient-primary);
  font-size: 20px;
  box-shadow: 0 4px 16px rgba(108, 99, 255, 0.4);
}

.like { background: rgba(255, 107, 157, 0.1); border: 1px solid rgba(255, 107, 157, 0.3); color: var(--accent); }

.phone-glow {
  position: absolute;
  bottom: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 100px;
  background: radial-gradient(ellipse, rgba(108, 99, 255, 0.4) 0%, transparent 70%);
  filter: blur(20px);
  animation: phoneGlow 3s ease-in-out infinite;
}

@keyframes phoneGlow {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  animation: fadeIn 1s ease 1.5s both;
}

.scroll-icon {
  width: 24px;
  height: 36px;
  border: 1.5px solid rgba(255,255,255,0.2);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-dot {
  width: 4px;
  height: 8px;
  background: rgba(255,255,255,0.5);
  border-radius: 2px;
  animation: scrollDot 2s ease-in-out infinite;
}

@keyframes scrollDot {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(16px); opacity: 0; }
}

/* ================================
   Features Section
   ================================ */
.features {
  padding: 120px 0;
  position: relative;
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(108, 99, 255, 0.3), transparent);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.3s;
  border-radius: inherit;
}

.feature-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.feature-card > * { position: relative; z-index: 1; }

.feature-large {
  grid-column: 1 / 2;
  grid-row: 1 / 3;
}

.feature-medium {
  grid-column: 3 / 4;
  grid-row: 1 / 3;
}

.feature-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  position: relative;
}

.feature-icon-wrap.small {
  width: 52px;
  height: 52px;
  margin-bottom: 16px;
}

.feature-icon-bg {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--gradient-primary);
  opacity: 0.08;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.feature-tags span {
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  color: rgba(108, 99, 255, 0.9);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 100px;
  font-weight: 500;
}

.feature-progress {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.progress-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}

.progress-bar {
  flex: 1;
  height: 4px;
  background: rgba(255,255,255,0.08);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 2px;
  transition: width 1.5s ease;
}

/* ================================
   How It Works
   ================================ */
.how-it-works {
  padding: 120px 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(108, 99, 255, 0.05) 0%, transparent 70%);
}

.steps-container {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  padding: 0 20px;
}

.steps-line {
  position: absolute;
  top: 60px;
  left: 15%;
  right: 15%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(108, 99, 255, 0.4), rgba(0, 212, 255, 0.4), transparent);
}

.steps-line::after {
  content: '';
  position: absolute;
  top: -2px;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, transparent, rgba(108, 99, 255, 0.15), rgba(0, 212, 255, 0.15), transparent);
  filter: blur(3px);
}

.step-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.step-number {
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
  margin-bottom: 8px;
  opacity: 0.7;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: var(--transition);
  width: 100%;
}

.step-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.step-icon {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ================================
   Products Section
   ================================ */
.products {
  padding: 120px 0;
  position: relative;
  overflow: hidden;
}

.products-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.orb-product-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(108, 99, 255, 0.15) 0%, transparent 70%);
  top: 0;
  right: -200px;
  border-radius: 50%;
  filter: blur(60px);
}

.orb-product-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  bottom: 0;
  left: -100px;
  border-radius: 50%;
  filter: blur(60px);
}

.products .container { position: relative; z-index: 1; }

.products-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.product-harmonyos {
  border-color: rgba(207, 10, 44, 0.2);
  background: linear-gradient(135deg, rgba(207, 10, 44, 0.05) 0%, var(--bg-card) 100%);
}

.product-harmonyos:hover { border-color: rgba(207, 10, 44, 0.4); }

.product-wechat {
  border-color: rgba(7, 193, 96, 0.2);
  background: linear-gradient(135deg, rgba(7, 193, 96, 0.05) 0%, var(--bg-card) 100%);
}

.product-wechat:hover { border-color: rgba(7, 193, 96, 0.4); }

.product-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 100px;
  padding: 4px 12px;
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.product-icon { flex-shrink: 0; }

.product-info h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}

.product-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.product-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.product-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.product-qr {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: auto;
}

.qr-placeholder {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.harmonyos-qr {
  background: rgba(207, 10, 44, 0.1);
  border: 1px solid rgba(207, 10, 44, 0.2);
}

.wechat-qr {
  background: rgba(7, 193, 96, 0.1);
  border: 1px solid rgba(7, 193, 96, 0.2);
}

.qr-pattern {
  width: 52px;
  height: 52px;
  background-image:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.3) 0px, rgba(255,255,255,0.3) 2px, transparent 2px, transparent 6px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.3) 0px, rgba(255,255,255,0.3) 2px, transparent 2px, transparent 6px);
  border-radius: 2px;
}

.qr-label {
  font-size: 9px;
  color: var(--text-muted);
  text-align: center;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.harmonyos-btn {
  background: linear-gradient(135deg, #CF0A2C, #FF4444);
  color: white;
}

.harmonyos-btn:hover {
  box-shadow: 0 8px 24px rgba(207, 10, 44, 0.4);
  transform: translateY(-2px);
}

.wechat-btn {
  background: linear-gradient(135deg, #07C160, #06AD56);
  color: white;
}

.wechat-btn:hover {
  box-shadow: 0 8px 24px rgba(7, 193, 96, 0.4);
  transform: translateY(-2px);
}

/* ================================
   Testimonials
   ================================ */
.testimonials {
  padding: 120px 0;
}

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

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
}

.testimonial-featured {
  background: linear-gradient(135deg, rgba(108, 99, 255, 0.1), rgba(0, 212, 255, 0.05));
  border-color: rgba(108, 99, 255, 0.3);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: var(--border-hover);
}

.testimonial-quote {
  font-size: 56px;
  line-height: 1;
  color: var(--primary);
  opacity: 0.3;
  font-family: Georgia, serif;
  margin-bottom: -16px;
}

.testimonial-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
}

.av-t1 { background: linear-gradient(135deg, #FF6B9D, #FFB347); }
.av-t2 { background: linear-gradient(135deg, #6C63FF, #00D4FF); }
.av-t3 { background: linear-gradient(135deg, #00D4FF, #07C160); }

.author-info { flex: 1; }

.author-info strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
}

.author-info span {
  font-size: 12px;
  color: var(--text-muted);
}

.rating { color: #FFB347; font-size: 13px; }

/* ================================
   About Section
   ================================ */
.about {
  padding: 120px 0;
  background: radial-gradient(ellipse at 80% 50%, rgba(108, 99, 255, 0.07) 0%, transparent 60%);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-content .section-badge { display: inline-block; margin-bottom: 20px; }

.about-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-values {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.value-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: var(--transition);
}

.value-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.value-icon { font-size: 24px; flex-shrink: 0; }

.value-item strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.value-item span {
  font-size: 13px;
  color: var(--text-secondary);
}

.about-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.about-stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  transition: var(--transition);
}

.about-stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
}

.about-stat-card.accent {
  background: linear-gradient(135deg, rgba(108, 99, 255, 0.1), rgba(0, 212, 255, 0.05));
  border-color: rgba(108, 99, 255, 0.25);
}

.about-stat-card.accent2 {
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.08), rgba(108, 99, 255, 0.05));
  border-color: rgba(255, 107, 157, 0.2);
}

.about-stat-number {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.about-stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

.tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-badge {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition);
}

.tech-badge:hover {
  border-color: var(--primary);
  color: var(--text-primary);
  background: rgba(108, 99, 255, 0.08);
}

/* ================================
   Contact Section
   ================================ */
.contact {
  padding: 120px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 32px;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-detail span {
  font-size: 14px;
  color: var(--text-secondary);
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-primary);
  transition: var(--transition);
  outline: none;
  font-family: inherit;
  resize: vertical;
}

.form-group select option {
  background: #1a1a3e;
  color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  background: rgba(108, 99, 255, 0.05);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

/* ================================
   Footer
   ================================ */
.footer {
  border-top: 1px solid var(--border);
}

.footer-top { padding: 64px 0; }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 16px 0 24px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.social-link:hover {
  border-color: var(--primary);
  color: var(--text-primary);
  background: rgba(108, 99, 255, 0.08);
}

.footer-links h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-links ul { list-style: none; }

.footer-links li { margin-bottom: 10px; }

.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--text-primary); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ================================
   Back to Top Button
   ================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: var(--transition);
  opacity: 0;
  transform: translateY(16px) scale(0.8);
  pointer-events: none;
  z-index: 100;
  box-shadow: 0 4px 16px rgba(108, 99, 255, 0.4);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.back-to-top:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 24px rgba(108, 99, 255, 0.5);
}

/* ================================
   Animations
   ================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Intersection Observer animation classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ================================
   Particles
   ================================ */
.particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: rgba(108, 99, 255, 0.6);
  animation: particleFloat linear infinite;
}

@keyframes particleFloat {
  0% { transform: translateY(100vh) translateX(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-100px) translateX(var(--drift)); opacity: 0; }
}

/* ================================
   Responsive - Tablet
   ================================ */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding: 120px 24px 80px;
    gap: 60px;
  }

  .hero-content {
    max-width: 100%;
    padding-right: 0;
  }

  .hero-actions { justify-content: center; }

  .hero-stats .stat-item:first-child,
  .hero-stats .stat-item:last-child {
    text-align: center;
  }

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

  .feature-large {
    grid-column: 1 / 3;
    grid-row: auto;
  }

  .feature-medium {
    grid-column: 1 / 3;
    grid-row: auto;
  }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }

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

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

  .footer-brand { grid-column: 1 / 3; }
}

/* ================================
   Responsive - Mobile
   ================================ */
@media (max-width: 768px) {
  .nav-links { display: none; }

  .nav-toggle { display: flex; }

  .nav-cta { display: none; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(6, 8, 20, 0.97);
    backdrop-filter: blur(20px);
    padding: 20px;
    border-bottom: 1px solid var(--border);
    gap: 4px;
  }

  .hero { padding: 100px 20px 60px; }

  .phone-frame { width: 240px; height: 480px; }

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

  .feature-large, .feature-medium {
    grid-column: 1 / 2;
    grid-row: auto;
  }

  .steps-container { flex-direction: column; gap: 24px; padding: 0; }

  .steps-line { display: none; }

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

  .product-qr { flex-direction: column; align-items: flex-start; }

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

  .contact-form { padding: 24px; }

  .form-row { grid-template-columns: 1fr; }

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

  .footer-brand { grid-column: 1; }

  .footer-bottom .container { flex-direction: column; gap: 8px; text-align: center; }

  .hero-stats { gap: 0; }

  .stat-divider { margin: 0 12px; }
}