/* ============================================
   Face Score Plus - Web Landing Page Styles
   ============================================ */

:root {
  --theme-pink: #FF6B9D;
  --theme-purple: #C471ED;
  --theme-cyan: #12C2E9;
  --theme-gold: #FFD166;

  --bg-gradient-start: #FFDAE9;
  --bg-gradient-mid: #F0DCFF;
  --bg-gradient-end: #D9F0FF;

  --text-primary: #1A1A1A;
  --text-secondary: #666666;
  --text-muted: #999999;

  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-bg-light: rgba(255, 255, 255, 0.4);
  --glass-border: rgba(255, 255, 255, 0.8);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --glass-shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.12);
  --glass-shadow-premium: 0 16px 64px rgba(0, 0, 0, 0.15);

  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 28px;
  --radius-2xl: 32px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 50%, var(--bg-gradient-end) 100%);
  background-attachment: fixed;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === Background Blobs === */
.bg-blobs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: float 20s ease-in-out infinite;
}

.blob-1 {
  width: 400px;
  height: 400px;
  background: var(--theme-pink);
  top: -10%;
  left: -5%;
}

.blob-2 {
  width: 500px;
  height: 500px;
  background: var(--theme-purple);
  top: 40%;
  right: -10%;
  animation-delay: -7s;
}

.blob-3 {
  width: 350px;
  height: 350px;
  background: var(--theme-cyan);
  bottom: -5%;
  left: 30%;
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -50px) scale(1.1); }
  66% { transform: translate(-20px, 30px) scale(0.9); }
}

/* === Navigation === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--glass-bg-light);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
}

.logo-text {
  font-weight: 700;
  font-size: 1.25rem;
  background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple), var(--theme-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 32px;
  flex: 1;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--theme-pink), var(--theme-purple));
  transition: var(--transition-normal);
}

.nav-links a:hover {
  color: var(--theme-pink);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple));
  color: white !important;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-normal);
  box-shadow: 0 4px 12px rgba(255, 107, 157, 0.3);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 157, 0.4);
}

/* === Language Selector === */
.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-selector {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  cursor: pointer;
  transition: var(--transition-fast);
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.85rem;
}

.lang-btn:hover {
  background: rgba(255, 255, 255, 0.8);
}

.lang-icon {
  font-size: 1.1rem;
}

.lang-label {
  font-weight: 600;
  text-transform: uppercase;
  min-width: 24px;
  text-align: center;
}

.lang-arrow {
  font-size: 0.7rem;
  opacity: 0.6;
}

.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--glass-shadow-hover);
  z-index: 2000;
  min-width: 180px;
  max-height: 400px;
  overflow-y: auto;
  padding: 6px;
}

.lang-dropdown.active {
  display: block;
  animation: dropIn 0.2s ease-out;
}

@keyframes dropIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.lang-option {
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-fast);
  font-size: 0.9rem;
  white-space: nowrap;
}

.lang-option:hover {
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.12), rgba(196, 113, 237, 0.12));
  color: var(--theme-pink);
}

.lang-option.active {
  background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple));
  color: white;
  font-weight: 600;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  padding: 24px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  z-index: 999;
}

.mobile-menu.active {
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: slideDown 0.3s ease-out;
}

.mobile-menu a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 1.1rem;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
}

.mobile-lang-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 12px 0 0;
  border-top: 1px solid var(--glass-border);
  margin-top: 8px;
}

.mobile-lang-selector .lang-option {
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-fast);
  font-size: 0.85rem;
}

.mobile-lang-selector .lang-option:hover,
.mobile-lang-selector .lang-option.active {
  background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple));
  color: white;
  font-weight: 600;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Section Headers === */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple), var(--theme-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* === Hero Section === */
.hero {
  min-height: 100vh;
  padding: 140px 0 80px;
  position: relative;
  z-index: 1;
}

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

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 24px;
}

.subtitle {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--text-primary);
  display: block;
  margin-top: 8px;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-actions {
  margin-bottom: 40px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: var(--transition-normal);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-lg {
  padding: 18px 36px;
  font-size: 1.05rem;
}

.btn-icon {
  font-size: 1.3rem;
}

.btn-arrow {
  transition: transform 0.3s ease;
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple));
  color: white;
  box-shadow: 0 8px 24px rgba(255, 107, 157, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 32px rgba(255, 107, 157, 0.5);
}

.hero-stats {
  display: flex;
  gap: 40px;
}

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

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* === Hero Visual === */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-mockup {
  width: 300px;
  height: 600px;
  background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
  border-radius: 44px;
  padding: 10px;
  box-shadow:
    0 32px 64px rgba(0, 0, 0, 0.25),
    0 16px 32px rgba(0, 0, 0, 0.15),
    inset 0 2px 4px rgba(255, 255, 255, 0.1);
  position: relative;
  z-index: 2;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #FFDAE9, #F0DCFF, #D9F0FF);
  border-radius: 36px;
  overflow: hidden;
}

.mock-result-card {
  background: rgba(255, 255, 255, 0.95);
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.mock-face-image {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.mock-face-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mock-scan-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(18, 194, 233, 0.8), transparent);
  box-shadow: 0 0 12px rgba(18, 194, 233, 0.6);
  animation: scanDown 2.5s ease-in-out infinite;
}

@keyframes scanDown {
  0%, 100% { top: 0; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  50% { top: calc(100% - 3px); }
}

.mock-score-badge {
  text-align: center;
  padding: 20px 16px;
  background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple));
}

.score-number {
  display: block;
  font-size: 3rem;
  font-weight: 900;
  color: white;
  line-height: 1;
}

.score-label {
  display: block;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.95);
  margin-top: 8px;
  font-weight: 600;
}

.mock-details {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.95);
}

.detail-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-label {
  font-weight: 600;
  font-size: 0.85rem;
}

.detail-value {
  font-weight: 700;
  color: var(--theme-pink);
  font-size: 0.85rem;
}

.mock-rank {
  text-align: center;
  padding: 14px;
  background: linear-gradient(135deg, var(--theme-gold), #FFB800);
  font-weight: 700;
  font-size: 0.85rem;
  color: white;
}

.phone-notch {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 24px;
  background: #1a1a1a;
  border-radius: 0 0 16px 16px;
  z-index: 10;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.85rem;
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 3px solid var(--theme-pink);
  border-bottom: 3px solid var(--theme-pink);
  transform: rotate(45deg);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-12px); }
  60% { transform: translateX(-50%) translateY(-6px); }
}

/* === Features Section === */
.features {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  transition: var(--transition-normal);
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--glass-shadow-hover);
}

.feature-card.highlight-card {
  border: 2px solid var(--theme-pink);
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.08), rgba(196, 113, 237, 0.08));
}

.feature-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple));
  color: white;
  padding: 5px 12px;
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 700;
  z-index: 2;
}

.feature-preview {
  width: 100%;
  aspect-ratio: 16/10;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #f5f5f5, #e8e8e8);
}

.feature-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
}

.feature-card:hover .feature-preview img {
  transform: scale(1.05);
}

.feature-icon-badge {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
  box-shadow: 0 6px 16px rgba(255, 107, 157, 0.3);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-desc {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

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

.tag {
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.12), rgba(196, 113, 237, 0.12));
  color: var(--theme-pink);
  padding: 5px 12px;
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* === Enhancement Comparison Section === */
.enhancement-showcase {
  padding: 60px 0;
  position: relative;
  z-index: 1;
}

.enhancement-demo {
  max-width: 950px;
  margin: 0 auto 64px;
}

.demo-header {
  text-align: center;
  margin-bottom: 28px;
}

.demo-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.demo-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* === Comparison Slider === */
.comparison-slider {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow-premium);
  cursor: col-resize;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

.comparison-slider .slider-before,
.comparison-slider .slider-after {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.comparison-slider .slider-before {
  z-index: 2;
  width: 50%;
  background: linear-gradient(135deg, #e8e8e8, #d8d8d8);
  overflow: hidden;
  pointer-events: none;
}

.comparison-slider .slider-before img {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  pointer-events: none;
}

.comparison-slider .slider-after {
  z-index: 1;
}

.comparison-slider .slider-after img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
  pointer-events: none;
}

.slider-label {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  padding: 6px 14px;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(10px);
  color: white;
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 6px;
  z-index: 20;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
  pointer-events: auto;
  white-space: nowrap;
}

.slider-label:hover {
  background: rgba(255, 107, 157, 0.9);
  transform: translateY(-50%) scale(1.05);
}

.label-before {
  left: 16px;
  right: auto;
}

.label-after {
  right: 16px;
  left: auto;
}

.slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  background: white;
  transform: translateX(-50%);
  z-index: 3;
  pointer-events: none;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.3);
}

.handle-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: rgba(255, 255, 255, 0.8);
  transform: translateX(-50%);
}

.handle-circle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.handle-arrows {
  font-size: 1.1rem;
  color: var(--theme-pink);
  font-weight: 700;
}

/* === Testimonials === */
.testimonials {
  padding: 60px 0;
  position: relative;
  z-index: 1;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--glass-shadow);
  transition: var(--transition-normal);
}

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

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.user-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--theme-pink);
  flex-shrink: 0;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.user-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.user-rating {
  font-size: 0.85rem;
}

.testimonial-text {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.95rem;
  font-style: italic;
}

/* === How It Works Section === */
.how-it-works {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 40px;
  max-width: 750px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  opacity: 0;
  transform: translateY(30px);
}

.step.visible {
  opacity: 1;
  transform: translateY(0);
  animation: fadeInUp 0.6s ease-out forwards;
}

.step-number {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 800;
  color: white;
  flex-shrink: 0;
  box-shadow: 0 8px 24px rgba(255, 107, 157, 0.35);
}

.step-content {
  flex: 1;
  padding-top: 8px;
}

.step-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

/* === Download Section === */
.download-section {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

.download-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(30px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  padding: 56px;
  box-shadow: var(--glass-shadow-premium);
  overflow: hidden;
}

.download-glow {
  position: absolute;
  top: -100px;
  right: -100px;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(255, 107, 157, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.download-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.download-text {
  text-align: left;
}

.download-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.download-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 28px;
}

.download-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}

.df-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.df-icon {
  font-size: 1.2rem;
}

.store-badge {
  display: inline-block;
  transition: var(--transition-normal);
  cursor: pointer;
}

.store-badge:hover {
  transform: scale(1.05);
  opacity: 0.9;
}

.store-badge img {
  max-width: 220px;
  height: auto;
}

.download-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.visual-phone {
  width: 260px;
  height: 520px;
  background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
  border-radius: 36px;
  padding: 8px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
}

.visual-phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 28px;
}

/* === Footer === */
.footer {
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(20px);
  color: white;
  padding: 48px 0 28px;
  position: relative;
  z-index: 1;
}

.footer-bottom {
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.footer-legal-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 14px;
}

.footer-legal-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

.footer-legal-links a:hover {
  color: var(--theme-pink);
}

.footer-disclaimer {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
}

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

.features-grid .feature-card,
.testimonial-card,
.steps .step,
.download-card,
.stat-item {
  opacity: 0;
  transform: translateY(30px);
}

.features-grid .feature-card.visible,
.testimonial-card.visible,
.steps .step.visible,
.download-card.visible,
.stat-item.visible {
  animation: fadeInUp 0.6s ease-out forwards;
}

.features-grid .feature-card:nth-child(1).visible { animation-delay: 0.1s; }
.features-grid .feature-card:nth-child(2).visible { animation-delay: 0.15s; }
.features-grid .feature-card:nth-child(3).visible { animation-delay: 0.2s; }
.features-grid .feature-card:nth-child(4).visible { animation-delay: 0.25s; }
.features-grid .feature-card:nth-child(5).visible { animation-delay: 0.3s; }
.features-grid .feature-card:nth-child(6).visible { animation-delay: 0.35s; }

.testimonial-card:nth-child(1).visible { animation-delay: 0.1s; }
.testimonial-card:nth-child(2).visible { animation-delay: 0.2s; }
.testimonial-card:nth-child(3).visible { animation-delay: 0.3s; }

.steps .step:nth-child(1).visible { animation-delay: 0.1s; }
.steps .step:nth-child(2).visible { animation-delay: 0.2s; }
.steps .step:nth-child(3).visible { animation-delay: 0.3s; }

/* === Responsive === */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .hero-visual {
    order: -1;
  }

  .phone-mockup {
    width: 260px;
    height: 520px;
  }

  .features-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }

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

  .download-text {
    text-align: center;
  }
}

@media (max-width: 768px) {
  .nav-links,
  .nav-right {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero-stats {
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .stat-number {
    font-size: 1.5rem;
  }

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

  .download-card {
    padding: 32px;
  }

  .steps {
    gap: 28px;
  }

  .step {
    flex-direction: column;
    gap: 14px;
    align-items: center;
    text-align: center;
  }

  /* 手机端菜单CTA按钮 */
  .mobile-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--theme-pink), var(--theme-purple));
    color: white;
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(255, 107, 157, 0.3);
    margin: 8px 0;
  }

  /* 手机端语言选项 */
  .mobile-lang-selector {
    max-height: 200px;
    overflow-y: auto;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

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

  .phone-mockup {
    width: 200px;
    height: 400px;
  }

  .phone-notch {
    width: 90px;
    height: 20px;
  }

  .comparison-slider {
    aspect-ratio: 4/3;
  }

  /* Hero标题和描述优化 */
  .hero-title {
    font-size: 2rem;
  }

  .subtitle {
    font-size: 1.25rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  /* Scroll指示器优化 */
  .scroll-indicator {
    bottom: 16px;
    font-size: 0.75rem;
  }

  .scroll-arrow {
    width: 20px;
    height: 20px;
  }

  /* 下载区域手机优化 */
  .download-card {
    padding: 24px 20px;
  }

  .download-title {
    font-size: 1.5rem;
  }

  .download-desc {
    font-size: 0.95rem;
  }

  .store-badge img {
    max-width: 180px;
  }

  .visual-phone {
    width: 200px;
    height: 400px;
  }

  /* 底部链接纵向布局 */
  .footer-legal-links {
    flex-direction: column;
    gap: 12px;
    align-items: center;
  }

  /* Feature卡片内边距调整 */
  .feature-card {
    padding: 20px;
  }

  /* 统计数字优化 */
  .stat-item {
    min-width: 80px;
  }
}