/* WPS Design System - Professional Blue & White Theme */
:root {
  --primary-color: #0066CC;
  --primary-dark: #0052A3;
  --primary-light: #4A90E2;
  --primary-gradient: linear-gradient(135deg, #0066CC, #4A90E2);
  --secondary-color: #1A1A1A;
  --text-color: #333333;
  --text-light: #fff;
  --bg-light: #F5F7FA;
  --bg-white: #FFFFFF;
  --accent-color: #FF6B35;
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --shadow-lg: 0 10px 30px rgba(0, 102, 204, 0.12);
  --shadow-blue: 0 5px 20px rgba(0, 102, 204, 0.15);
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-smooth: always;
  text-rendering: optimizeLegibility;
}

body {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-light);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-smooth: always;
  text-rendering: optimizeLegibility;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6,
p,
span,
a,
li,
td,
th,
label,
input,
textarea,
button,
select {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

/* Glassmorphism Utilities */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
}

.glass-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow-lg);
  border-radius: 16px;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 2rem;
  transition: var(--transition);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.nav .download-btn {
  margin-top: 0;
  flex-shrink: 0;
  width: auto;
}

.nav .download-btn .pcgetDown {
  width: auto;
  max-width: none;
  margin: 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.logo img {
  height: 40px;
  width: auto;
  display: block;
  transition: var(--transition);
}

.logo:hover img {
  opacity: 0.8;
  transform: scale(1.05);
}

/* Responsive logo styles */
@media (max-width: 768px) {
  .logo img {
    height: 32px;
  }
}

@media (max-width: 480px) {
  .logo img {
    height: 28px;
  }
}

.nav-list {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-list a {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--secondary-color);
  position: relative;
}

.nav-list a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background: var(--primary-color);
  transition: var(--transition);
}

.nav-list a[style*="color"] {
  color: var(--primary-color) !important;
}

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

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('../img/hero_premium_3d.png') no-repeat center center/cover;
  color: var(--text-light);
  text-align: center;
  padding: 0 1rem;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(45, 55, 72, 0.6);
  /* Overlay for readability */
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  animation: fadeInUp 1s ease-out;
}

.hero-logo-section {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s ease-out 0.2s both;
  position: relative;
}

.hero-feature-bg {
  position: absolute;
  left: 80%;
  top: 125px;
  transform: translateX(-50%);
  width: 80%;
  max-width: 900px;
  opacity: 0.5;
  pointer-events: none;
  z-index: 1;
}

.feature-icons-img {
  width: 100%;
  height: auto;
  display: block;
}

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

.wps-logo-img {
  width: 160px;
  height: 160px;
  border-radius: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 15px;
  transition: all 0.4s ease;
  object-fit: cover;
}

.wps-logo-img:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  text-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 2;
}

.hero-subtitle {
  font-size: 1.4rem;
  margin-bottom: 1.5rem;
  opacity: 0.95;
  font-weight: 500;
  position: relative;
  z-index: 2;
}

.hero-description {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 3rem;
  opacity: 0.9;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 2;
}

.hero-features {
  display: flex;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-feature-item {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(15px);
  padding: 1rem 1.5rem;
  border-radius: 16px;
  font-size: 1.05rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.hero-feature-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.hero-feature-item:hover::before {
  left: 100%;
}

.hero-feature-item:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.hero-feature-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  flex-shrink: 0;
  transition: all 0.4s ease;
}

.hero-feature-item:hover .hero-feature-icon {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.15) rotate(5deg);
}

.hero-feature-icon svg {
  width: 20px;
  height: 20px;
  color: #fff;
  stroke-width: 2.5;
}

.hero-feature-text {
  font-weight: 500;
  color: #fff;
  white-space: nowrap;
}

.hero-platforms {
  margin-top: 1rem;
  font-size: 1rem;
  opacity: 0.7;
}

.btn-primary {
  display: inline-block;
  padding: 1.8rem 2.8rem;
  font-size: 1.3rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary-gradient);
  border-radius: 50px;
  box-shadow: 0 10px 20px rgba(0, 102, 204, 0.25);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border: none;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 30px rgba(0, 102, 204, 0.35);
  background: linear-gradient(135deg, #0052A3, #0066CC);
}

.btn-primary span {
  position: relative;
  z-index: 1;
}

/* Features Section */
.features {
  padding: 6rem 1rem;
  background: linear-gradient(180deg, #fff 0%, #F8FAFF 100%);
  position: relative;
  overflow: hidden;
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.3), transparent);
}

.features::after {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--secondary-color);
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.features .section-title {
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.feature-card {
  padding: 2.5rem 2rem;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0, 102, 204, 0.08);
  border: 1px solid rgba(0, 102, 204, 0.1);
  overflow: hidden;
}

.feature-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-12px);
  box-shadow: 0 12px 40px rgba(0, 102, 204, 0.15);
  border-color: rgba(0, 102, 204, 0.2);
}

.feature-card:hover::after {
  transform: scaleX(1);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.15);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
  background: linear-gradient(135deg, #BBDEFB 0%, #90CAF9 100%);
  box-shadow: 0 8px 25px rgba(0, 102, 204, 0.25);
}

.feature-icon svg {
  width: 40px;
  height: 40px;
  stroke-width: 2;
  transition: all 0.4s ease;
}

.feature-card:hover .feature-icon svg {
  transform: scale(1.1);
}

.feature-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--secondary-color);
  transition: color 0.3s ease;
}

.feature-card:hover h3 {
  color: var(--primary-color);
}

.feature-card p {
  color: #666;
  font-size: 1.05rem;
  line-height: 1.6;
  margin: 0;
}

/* Ecosystem Section */
.ecosystem {
  padding: 5rem 1rem;
  background: var(--bg-light);
  text-align: center;
}

.ecosystem-img {
  max-width: 1360px;
  width: 100%;
  height: auto;
  margin-top: 3rem;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
}

/* Footer */
.site-footer {
  background: linear-gradient(180deg, #F8FAFF 0%, #EDF2F7 100%);
  color: #4A5568;
  padding: 4rem 1rem 2.5rem;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.25), transparent);
}

.site-footer::after {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2.5rem;
  margin-bottom: 3rem;
  position: relative;
  z-index: 1;
}

.footer-col h4 {
  color: var(--secondary-color);
  margin-bottom: 1.2rem;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.6rem;
  width: 40px;
  height: 2px;
  background: var(--primary-gradient);
  border-radius: 999px;
}

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

.footer-col ul li {
  margin-bottom: 0.7rem;
}

.footer-col ul li a {
  color: #4A5568;
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-col ul li a:hover {
  color: var(--primary-color);
  transform: translateX(3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(160, 174, 192, 0.4);
  font-size: 1.05rem;
  opacity: 0.9;
  position: relative;
  z-index: 1;
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

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

  .hero-features {
    gap: 0.8rem;
  }

  .hero-feature-item {
    font-size: 1.05rem;
    padding: 0.8rem 1.2rem;
  }

  .hero-feature-icon {
    width: 28px;
    height: 28px;
  }

  .hero-feature-icon svg {
    width: 18px;
    height: 18px;
  }

  .hero-logo-section {
    flex-direction: column;
    gap: 1rem;
    align-items: center;
  }

  .hero-feature-icons {
    margin-top: 0;
  }

  .feature-icons-img {
    width: 150px;
  }

  .wps-logo-img {
    width: 100px;
    height: 100px;
  }

  .nav-list {
    display: none;
    /* Simple mobile hide for now, can add hamburger later if needed */
  }

  .section-title {
    font-size: 2rem;
  }

  .stats-container {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }

  .stat-item {
    padding: 2.5rem 1.5rem;
  }

  .stat-icon-wrapper {
    width: 70px;
    height: 70px;
    margin-bottom: 1.2rem;
  }

  .stat-icon-wrapper svg {
    width: 35px;
    height: 35px;
  }

  .stat-number {
    font-size: 3rem;
  }

  .stat-label {
    font-size: 1.1rem;
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .testimonial-card {
    padding: 2rem;
  }

  .news-grid,
  .ai-features-list {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .ai-feature-item {
    flex-direction: column;
    text-align: center;
    padding: 1.8rem;
  }

  .ai-feature-icon {
    margin: 0 auto;
    width: 60px;
    height: 60px;
  }

  .ai-feature-icon svg {
    width: 28px;
    height: 28px;
  }

  .ai-feature-text h3 {
    font-size: 1.2rem;
  }

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

  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .partners-logos {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .partner-logo {
    font-size: 1rem;
    padding: 1.5rem 1rem;
    min-height: 80px;
  }

  .download-hero {
    padding: 4rem 1rem;
  }

  .download-hero h1 {
    font-size: 2.5rem;
  }

  .download-stats {
    gap: 1.5rem;
  }

  .download-stat-item {
    padding: 1.5rem 2rem;
    min-width: 200px;
  }

  .stat-icon-wrapper {
    width: 56px;
    height: 56px;
  }

  .stat-icon {
    width: 28px;
    height: 28px;
  }

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

  .install-steps {
    flex-direction: column;
  }

  .install-step {
    min-width: 100%;
  }

  .version-table {
    margin: 2rem auto;
  }

  .download-faq-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

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

  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .testimonial-card {
    padding: 1.8rem;
  }

  .testimonial-text {
    font-size: 1.05rem;
    padding-left: 1.2rem;
  }

  .testimonial-text::before {
    font-size: 3rem;
    top: -5px;
  }

  .partners-logos {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .partner-logo {
    padding: 1.2rem 1rem;
    min-height: 70px;
    font-size: 1rem;
  }

  .stats-container {
    grid-template-columns: 1fr;
  }

  .stat-item {
    padding: 2rem 1.5rem;
  }

  .stat-icon-wrapper {
    width: 60px;
    height: 60px;
    margin-bottom: 1rem;
  }

  .stat-icon-wrapper svg {
    width: 30px;
    height: 30px;
  }

  .stat-number {
    font-size: 2.5rem;
  }

  .stat-label {
    font-size: 1rem;
  }

  .stat-description {
    font-size: 1.05rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .download-hero h1 {
    font-size: 2rem;
  }

  .download-stats {
    flex-direction: column;
    gap: 1rem;
  }

  .download-stat-item {
    width: 100%;
    max-width: 100%;
    justify-content: flex-start;
    padding: 1.5rem;
  }

  .stat-icon-wrapper {
    width: 56px;
    height: 56px;
  }

  .stat-icon {
    width: 28px;
    height: 28px;
  }

  .stat-value {
    font-size: 1.4rem;
  }

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

  .platform-card {
    padding: 1.5rem;
  }

  .version-table-wrapper {
    overflow-x: scroll;
  }

  .download-faq-grid {
    grid-template-columns: 1fr;
  }
}
/* Download Page Styles */
.download-hero {
  background: url('../img/download_hero_bg.png') no-repeat center center/cover;
  color: #333;
  padding: 6rem 1rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 247, 255, 0.9) 100%);
  z-index: 1;
}

.download-hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
}

.download-hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: #001f3f;
  font-weight: 800;
}

.download-hero p {
  font-size: 1.2rem;
  color: #666;
  margin-bottom: 3rem;
}

.download-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 3rem;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.download-stat-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: rgba(255, 255, 255, 0.95);
  padding: 2rem 2.5rem;
  border-radius: 20px;
  box-shadow: 0 8px 25px rgba(0, 102, 204, 0.12);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(0, 102, 204, 0.1);
  flex: 1;
  min-width: 250px;
  max-width: 320px;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
  animation: statFadeIn 0.6s ease-out forwards;
}

.download-stat-item:nth-child(1) {
  animation-delay: 0.1s;
}

.download-stat-item:nth-child(2) {
  animation-delay: 0.2s;
}

.download-stat-item:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes statFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.download-stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, #0066CC, #4A90E2);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.4s ease;
}

.download-stat-item:hover::before {
  transform: scaleY(1);
}

.download-stat-item:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 15px 35px rgba(0, 102, 204, 0.2);
  border-color: rgba(0, 102, 204, 0.3);
  background: #fff;
}

.stat-icon-wrapper {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.4s ease;
  position: relative;
  z-index: 1;
}

.download-stat-item:hover .stat-icon-wrapper {
  background: linear-gradient(135deg, #0066CC 0%, #4A90E2 100%);
  transform: rotate(5deg) scale(1.1);
}

.stat-icon {
  width: 32px;
  height: 32px;
  transition: all 0.4s ease;
}

.download-stat-item:hover .stat-icon {
  color: #fff;
  transform: scale(1.1);
}

/* 确保下载区图标默认不是白色，与蓝色主题协调 */
.download-stats .stat-icon-wrapper svg,
.download-stats .stat-icon {
  color: #0066CC;
}

.download-stats .download-stat-item:hover .stat-icon {
  color: #fff;
}

.stat-content {
  flex: 1;
  position: relative;
  z-index: 1;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #0066CC, #4A90E2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.4rem;
  line-height: 1.2;
  transition: all 0.3s ease;
}

.download-stat-item:hover .stat-value {
  transform: translateX(3px);
}

.stat-label {
  font-size: 1.05rem;
  color: #666;
  font-weight: 500;
  letter-spacing: 0.3px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 1400px;
  margin: -3rem auto 4rem; /* Overlap hero */
  padding: 0 2rem;
  position: relative;
  z-index: 10;
}

@media (max-width: 1200px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

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

@media (max-width: 768px) {
  .download-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 0 1rem;
  }
}

.platform-card {
  background: #fff;
  padding: 2rem 1.5rem;
  border-radius: 20px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.1);
  text-align: center;
  transition: var(--transition);
  border: 2px solid transparent;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  overflow: hidden;
  height: 100%;
}

.platform-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.05), transparent);
  transition: left 0.5s;
}

.platform-card:hover::before {
  left: 100%;
}

.platform-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
  border-color: rgba(0, 102, 204, 0.2);
}

.platform-card.featured {
  border: 2px solid var(--primary-color);
  background: linear-gradient(135deg, #fff 0%, #F0F7FF 100%);
}

.platform-card.featured::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 60px 60px 0;
  border-color: transparent var(--primary-color) transparent transparent;
}

.platform-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  background: var(--primary-gradient);
  color: #fff;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 1.05rem;
  font-weight: 600;
  z-index: 2;
  box-shadow: 0 2px 10px rgba(0, 102, 204, 0.3);
}

.platform-icon-wrapper {
  width: 100px;
  height: 100px;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #F0F7FF 0%, #E3F2FD 100%);
  border-radius: 20px;
  transition: var(--transition);
}

.platform-card:hover .platform-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
  background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
}

.platform-icon {
  width: 70px;
  height: 70px;
  object-fit: contain;
  transition: var(--transition);
}

.platform-icon-svg {
  width: 60px;
  height: 60px;
  fill: var(--primary-color);
  transition: var(--transition);
}

.platform-card:hover .platform-icon-svg {
  transform: scale(1.1);
}

.platform-features {
  display: flex;
  gap: 0.4rem;
  margin: 1rem 0;
  flex-wrap: wrap;
  justify-content: center;
  min-height: 4.5rem;
  align-items: flex-start;
}

.feature-tag {
  background: rgba(0, 102, 204, 0.08);
  color: var(--primary-color);
  padding: 0.35rem 0.7rem;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 500;
  white-space: nowrap;
  line-height: 1.4;
}

.download-btn {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.download-btn .btn-download,
.download-btn .pcgetDown {
  width: 100%;
  max-width: 200px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: inline-block;
  text-align: center;
  margin: 0 auto;
}

/* 平台卡片中的下载按钮 - 文字完整显示 */
.platform-card .download-btn {
  width: 100%;
}

.platform-card .download-btn .btn-download,
.platform-card .download-btn .pcgetDown {
  max-width: 100%;
  width: 100%;
  padding: 0.8rem 1.5rem;
  font-size: 1.05rem;
  white-space: nowrap;
  overflow: visible;
  text-overflow: clip;
}

.platform-info {
  margin-top: 1rem;
  font-size: 1rem;
  color: #999;
  line-height: 1.6;
  min-height: 2.8rem;
}

.download-progress {
  width: 100%;
  height: 4px;
  background: #e0e0e0;
  border-radius: 2px;
  margin-top: 1rem;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--primary-gradient);
  width: 0%;
  transition: width 0.3s;
  animation: progress 2s infinite;
  border-radius: 2px;
}

@keyframes progress {
  0% { width: 0%; }
  50% { width: 70%; }
  100% { width: 100%; }
}

.platform-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
  color: var(--secondary-color);
}

.platform-desc {
  font-size: 1rem;
  color: #666;
  line-height: 1.6;
  margin-bottom: 1rem;
  min-height: 3.2rem;
}

.platform-card p {
  color: #666;
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

.version-table {
  max-width: 1000px;
  margin: 4rem auto;
  padding: 0 1rem;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
}

.version-table-wrapper {
  overflow-x: auto;
}

.version-table table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.version-table th, .version-table td {
  padding: 1.5rem;
  text-align: center;
  border-bottom: 1px solid #eee;
}

.version-table th {
  background: linear-gradient(135deg, #f9f9f9 0%, #f0f0f0 100%);
  font-weight: 700;
  color: var(--secondary-color);
  position: relative;
}

.version-table th.highlight-col {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: #fff;
}

.version-table td.highlight-col {
  background: rgba(0, 102, 204, 0.04);
  font-weight: 500;
}

.version-table tr:hover td {
  background: rgba(0, 102, 204, 0.02);
}

.version-table tr:hover td.highlight-col {
  background: rgba(0, 102, 204, 0.06);
}

.version-table tr:last-child td {
  border-bottom: none;
}

.check-icon {
  color: #28a745;
  font-weight: bold;
  font-size: 1.2rem;
}

.download-faq {
  padding: 5rem 1rem;
  background: var(--bg-light);
}

.download-faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.faq-card {
  background: #fff;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
  border-left: 4px solid var(--primary-color);
}

.faq-card h3 {
  color: var(--primary-color);
}

.faq-card:hover {
  border-left-color: var(--primary-dark);
}

.faq-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.faq-card h3 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.faq-card p {
  color: #666;
  line-height: 1.7;
  font-size: 1.05rem;
}


/* Help & Privacy Page Styles */
.page-header {
  background: linear-gradient(135deg, #0066CC, #0052A3);
  color: #fff;
  padding: 4rem 1rem;
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.page-content {
  max-width: 800px;
  margin: 3rem auto;
  padding: 0 1rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  padding: 2rem;
}

.help-search {
  max-width: 600px;
  margin: 2rem auto 0;
  position: relative;
}

.help-search input {
  width: 100%;
  padding: 1rem 1.5rem;
  border-radius: 50px;
  border: none;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  font-size: 1rem;
}

.faq-item {
  border-bottom: 1px solid #eee;
  padding: 1.5rem 0;
}

.faq-item h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
  cursor: pointer;
}

.faq-item p {
  color: #555;
  display: block; /* Simple static display */
}

.privacy-content h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  color: var(--primary-color);
}

.privacy-content p {
  margin-bottom: 1rem;
  color: #555;
  line-height: 1.8;
}


/* Scenarios Section */
.scenarios {
  padding: 6rem 1rem;
  background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
  position: relative;
}

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  align-items: stretch;
}

.scenario-card {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  background: #fff;
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid rgba(0, 102, 204, 0.1);
}

.scenario-card:hover {
  transform: translateY(-5px);
}

.scenario-img {
  height: auto;
  min-height: 200px;
  width: 100%;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  /* Fallback gradients used in HTML, can be replaced by images later */
}

.scenario-image {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
  transition: transform 0.4s ease;
  display: block;
}

.scenario-card:hover .scenario-image {
  transform: scale(1.05);
}

.scenario-content {
  padding: 1.5rem;
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.scenario-content-image {
  width: 100%;
  height: auto;
  max-height: 200px;
  object-fit: contain;
  margin-bottom: 1rem;
  border-radius: 8px;
  transition: transform 0.4s ease;
}

.scenario-content h3 {
  margin-bottom: 0.5rem;
  color: var(--secondary-color);
}

.scenario-content p {
  color: #666;
  font-size: 1.05rem;
}

/* Partners Section */
.partners {
  padding: 6rem 1rem;
  background: linear-gradient(180deg, #F8FAFF 0%, #fff 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.partners::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.3), transparent);
}

.partners::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.partners .section-title {
  margin-bottom: 4rem;
  position: relative;
  z-index: 1;
}

.partners-logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.partner-logo {
  font-size: 1.1rem;
  font-weight: 600;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 2rem 1.5rem;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.08);
  border: 1px solid rgba(0, 102, 204, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
}

.partner-logo::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.1), transparent);
  transition: left 0.5s;
}

.partner-logo:hover::before {
  left: 100%;
}

.partner-logo:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 102, 204, 0.15);
  border-color: rgba(0, 102, 204, 0.3);
  color: var(--primary-color);
  background: linear-gradient(135deg, #fff 0%, #F0F7FF 100%);
}

.partner-logo::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.partner-logo:hover::after {
  transform: scaleX(1);
}

/* Stats Section */
.stats {
  padding: 4rem 1rem;
  background: linear-gradient(135deg, #0066CC 0%, #4A90E2 50%, #6BA3E8 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 20s infinite ease-in-out;
}

.stats::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 15s infinite ease-in-out reverse;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(30px, 30px) rotate(180deg);
  }
}

.stats-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-item {
  padding: 2rem 1.5rem;
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-item:hover {
  transform: translateY(-10px);
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.stat-icon-wrapper {
  width: 70px;
  height: 70px;
  margin-bottom: 1rem;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.stat-item:hover .stat-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
  background: rgba(255, 255, 255, 0.25);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

.stat-icon-wrapper svg {
  width: 36px;
  height: 36px;
  color: #fff;
  stroke-width: 2;
}

.stat-number {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #fff 0%, #E3F2FD 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  transition: all 0.4s ease;
}

.stat-item:hover .stat-number {
  transform: scale(1.05);
}

.stat-unit {
  font-size: 2.2rem;
  font-weight: 700;
}

.stat-label {
  font-size: 1.2rem;
  opacity: 0.95;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: 0.5px;
}

.stat-description {
  font-size: 1rem;
  opacity: 0.8;
  font-weight: 400;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

/* Testimonials Section */
.testimonials {
  padding: 6rem 1rem;
  background: linear-gradient(180deg, #fff 0%, #F8FAFF 100%);
  position: relative;
  overflow: hidden;
}

.testimonials::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.3), transparent);
}

.testimonials::after {
  content: '';
  position: absolute;
  top: -150px;
  right: -150px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.testimonials .section-title {
  margin-bottom: 4rem;
  position: relative;
  z-index: 1;
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.testimonial-card {
  padding: 2.5rem;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(0, 102, 204, 0.08);
  border: 1px solid rgba(0, 102, 204, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.testimonial-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.testimonial-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 40px rgba(0, 102, 204, 0.15);
  border-color: rgba(0, 102, 204, 0.2);
}

.testimonial-card:hover::after {
  transform: scaleX(1);
}

.testimonial-rating {
  display: flex;
  gap: 0.3rem;
  margin-bottom: 1.5rem;
  color: #FFB300;
}

.testimonial-rating svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.testimonial-card:hover .testimonial-rating svg {
  transform: scale(1.1);
}

.testimonial-rating svg:nth-child(1) { transition-delay: 0s; }
.testimonial-rating svg:nth-child(2) { transition-delay: 0.05s; }
.testimonial-rating svg:nth-child(3) { transition-delay: 0.1s; }
.testimonial-rating svg:nth-child(4) { transition-delay: 0.15s; }
.testimonial-rating svg:nth-child(5) { transition-delay: 0.2s; }

.testimonial-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #555;
  margin-bottom: 2rem;
  font-style: italic;
  flex: 1;
  position: relative;
  padding-left: 1.5rem;
}

.testimonial-text::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -10px;
  font-size: 4rem;
  color: rgba(0, 102, 204, 0.1);
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(0, 102, 204, 0.1);
}

.author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  flex-shrink: 0;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.2);
  transition: all 0.4s ease;
  font-size: 1.2rem;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.2);
}

.testimonial-card:hover .author-avatar {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 6px 20px rgba(0, 102, 204, 0.3);
}

.author-info {
  flex: 1;
}

.author-name {
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 0.3rem;
  font-size: 1.05rem;
  transition: color 0.3s ease;
}

.testimonial-card:hover .author-name {
  color: var(--primary-color);
}

.author-title {
  font-size: 1rem;
  color: #888;
  font-weight: 500;
}

/* AI Features Section */
.ai-features {
  padding: 6rem 1rem;
  background: linear-gradient(180deg, #F8FAFF 0%, #fff 100%);
  position: relative;
  overflow: hidden;
}

.ai-features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.3), transparent);
}

.ai-features::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.ai-features-container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.ai-features .section-title {
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: #666;
  margin-bottom: 4rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 400;
}

.ai-features-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.ai-feature-item {
  display: flex;
  gap: 1.5rem;
  padding: 2rem;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0, 102, 204, 0.08);
  border: 1px solid rgba(0, 102, 204, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.ai-feature-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.ai-feature-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 102, 204, 0.15);
  border-color: rgba(0, 102, 204, 0.2);
  background: #fff;
}

.ai-feature-item:hover::after {
  transform: scaleX(1);
}

.ai-feature-icon {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.15);
}

.ai-feature-item:hover .ai-feature-icon {
  transform: scale(1.1) rotate(5deg);
  background: linear-gradient(135deg, #BBDEFB 0%, #90CAF9 100%);
  box-shadow: 0 8px 25px rgba(0, 102, 204, 0.25);
}

.ai-feature-icon svg {
  width: 32px;
  height: 32px;
  color: var(--primary-color);
  stroke-width: 2.5;
  transition: all 0.4s ease;
}

.ai-feature-item:hover .ai-feature-icon svg {
  transform: scale(1.1);
}

.ai-feature-text {
  flex: 1;
}

.ai-feature-text h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  color: var(--secondary-color);
  font-weight: 700;
  transition: color 0.3s ease;
}

.ai-feature-item:hover .ai-feature-text h3 {
  color: var(--primary-color);
}

.ai-feature-text p {
  color: #666;
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0;
}

/* FAQ Section */
.faq-section {
  padding: 6rem 1rem;
  background: var(--bg-light);
  position: relative;
}

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

.faq-item {
  background: #fff;
  padding: 2rem;
  margin-bottom: 1rem;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.faq-question {
  font-size: 1.2rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-weight: 600;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary-dark);
}

.faq-answer {
  color: #666;
  line-height: 1.8;
  font-size: 1rem;
}

/* News Section */
.news-section {
  padding: 6rem 1rem 5rem;
  background: linear-gradient(180deg, #fff 0%, #F8FAFF 100%);
  position: relative;
  overflow: hidden;
}

.news-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.3), transparent);
}

.news-section::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.news-card {
  padding: 2.2rem 2rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0, 102, 204, 0.08);
  border: 1px solid rgba(0, 102, 204, 0.1);
  position: relative;
  overflow: hidden;
}

.news-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 35px rgba(0, 102, 204, 0.18);
  border-color: rgba(0, 102, 204, 0.25);
}

.news-date {
  font-size: 1.05rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.9rem;
  border-radius: 999px;
  background: rgba(0, 102, 204, 0.06);
}

.news-date::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-color);
}

.news-title {
  font-size: 1.3rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
  font-weight: 600;
  transition: color 0.3s ease;
}

.news-excerpt {
  color: #666;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.news-link {
  color: var(--primary-color);
  font-weight: 600;
  transition: var(--transition);
  display: inline-block;
}

.news-link:hover {
  color: var(--primary-dark);
  transform: translateX(5px);
}

/* Enhanced Animations */
@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.stat-item {
  animation: fadeInUp 0.6s ease-out;
}

.stat-item:nth-child(1) { animation-delay: 0.1s; }
.stat-item:nth-child(2) { animation-delay: 0.2s; }
.stat-item:nth-child(3) { animation-delay: 0.3s; }
.stat-item:nth-child(4) { animation-delay: 0.4s; }

/* Scroll Animation */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 确保 stats 区域的元素始终可见 */
.stats .stat-item {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

.stats .stat-item.fade-in-up {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* Enhanced hover effects */
.feature-card,
.scenario-card,
.testimonial-card,
.news-card {
  position: relative;
  overflow: hidden;
}

.feature-card::before,
.scenario-card::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;
}

.feature-card:hover::before,
.scenario-card:hover::before {
  left: 100%;
}

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



  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2.5rem;
  margin-bottom: 3rem;
  position: relative;
  z-index: 1;
}

.footer-col h4 {
  color: var(--secondary-color);
  margin-bottom: 1.2rem;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.6rem;
  width: 40px;
  height: 2px;
  background: var(--primary-gradient);
  border-radius: 999px;
}

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

.footer-col ul li {
  margin-bottom: 0.7rem;
}

.footer-col ul li a {
  color: #4A5568;
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-col ul li a:hover {
  color: var(--primary-color);
  transform: translateX(3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(160, 174, 192, 0.4);
  font-size: 1.05rem;
  opacity: 0.9;
  position: relative;
  z-index: 1;
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

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

  .hero-features {
    gap: 0.8rem;
  }

  .hero-feature-item {
    font-size: 1.05rem;
    padding: 0.8rem 1.2rem;
  }

  .hero-feature-icon {
    width: 28px;
    height: 28px;
  }

  .hero-feature-icon svg {
    width: 18px;
    height: 18px;
  }

  .hero-logo-section {
    flex-direction: column;
    gap: 1rem;
    align-items: center;
  }

  .hero-feature-icons {
    margin-top: 0;
  }

  .feature-icons-img {
    width: 150px;
  }

  .wps-logo-img {
    width: 100px;
    height: 100px;
  }

  .nav-list {
    display: none;
    /* Simple mobile hide for now, can add hamburger later if needed */
  }

  .section-title {
    font-size: 2rem;
  }

  .stats-container {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }

  .stat-item {
    padding: 2.5rem 1.5rem;
  }

  .stat-icon-wrapper {
    width: 70px;
    height: 70px;
    margin-bottom: 1.2rem;
  }

  .stat-icon-wrapper svg {
    width: 35px;
    height: 35px;
  }

  .stat-number {
    font-size: 3rem;
  }

  .stat-label {
    font-size: 1.1rem;
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .testimonial-card {
    padding: 2rem;
  }

  .news-grid,
  .ai-features-list {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .ai-feature-item {
    flex-direction: column;
    text-align: center;
    padding: 1.8rem;
  }

  .ai-feature-icon {
    margin: 0 auto;
    width: 60px;
    height: 60px;
  }

  .ai-feature-icon svg {
    width: 28px;
    height: 28px;
  }

  .ai-feature-text h3 {
    font-size: 1.2rem;
  }

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

  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .partners-logos {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .partner-logo {
    font-size: 1rem;
    padding: 1.5rem 1rem;
    min-height: 80px;
  }

  .download-hero {
    padding: 4rem 1rem;
  }

  .download-hero h1 {
    font-size: 2.5rem;
  }

  .download-stats {
    gap: 1.5rem;
  }

  .download-stat-item {
    padding: 1.5rem 2rem;
    min-width: 200px;
  }

  .stat-icon-wrapper {
    width: 56px;
    height: 56px;
  }

  .stat-icon {
    width: 28px;
    height: 28px;
  }

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

  .install-steps {
    flex-direction: column;
  }

  .install-step {
    min-width: 100%;
  }

  .version-table {
    margin: 2rem auto;
  }

  .download-faq-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

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

  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .testimonial-card {
    padding: 1.8rem;
  }

  .testimonial-text {
    font-size: 1.05rem;
    padding-left: 1.2rem;
  }

  .testimonial-text::before {
    font-size: 3rem;
    top: -5px;
  }

  .partners-logos {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .partner-logo {
    padding: 1.2rem 1rem;
    min-height: 70px;
    font-size: 1rem;
  }

  .stats-container {
    grid-template-columns: 1fr;
  }

  .stat-item {
    padding: 2rem 1.5rem;
  }

  .stat-icon-wrapper {
    width: 60px;
    height: 60px;
    margin-bottom: 1rem;
  }

  .stat-icon-wrapper svg {
    width: 30px;
    height: 30px;
  }

  .stat-number {
    font-size: 2.5rem;
  }

  .stat-label {
    font-size: 1rem;
  }

  .stat-description {
    font-size: 1.05rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .download-hero h1 {
    font-size: 2rem;
  }

  .download-stats {
    flex-direction: column;
    gap: 1rem;
  }

  .download-stat-item {
    width: 100%;
    max-width: 100%;
    justify-content: flex-start;
    padding: 1.5rem;
  }

  .stat-icon-wrapper {
    width: 56px;
    height: 56px;
  }

  .stat-icon {
    width: 28px;
    height: 28px;
  }

  .stat-value {
    font-size: 1.4rem;
  }

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

  .platform-card {
    padding: 1.5rem;
  }

  .version-table-wrapper {
    overflow-x: scroll;
  }

  .download-faq-grid {
    grid-template-columns: 1fr;
  }
}
/* Download Page Styles */
.download-hero {
  background: url('../img/download_hero_bg.png') no-repeat center center/cover;
  color: #333;
  padding: 6rem 1rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 247, 255, 0.9) 100%);
  z-index: 1;
}

.download-hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
}

.download-hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: #001f3f;
  font-weight: 800;
}

.download-hero p {
  font-size: 1.2rem;
  color: #666;
  margin-bottom: 3rem;
}

.download-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 3rem;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.download-stat-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: rgba(255, 255, 255, 0.95);
  padding: 2rem 2.5rem;
  border-radius: 20px;
  box-shadow: 0 8px 25px rgba(0, 102, 204, 0.12);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(0, 102, 204, 0.1);
  flex: 1;
  min-width: 250px;
  max-width: 320px;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
  animation: statFadeIn 0.6s ease-out forwards;
}

.download-stat-item:nth-child(1) {
  animation-delay: 0.1s;
}

.download-stat-item:nth-child(2) {
  animation-delay: 0.2s;
}

.download-stat-item:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes statFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.download-stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, #0066CC, #4A90E2);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.4s ease;
}

.download-stat-item:hover::before {
  transform: scaleY(1);
}

.download-stat-item:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 15px 35px rgba(0, 102, 204, 0.2);
  border-color: rgba(0, 102, 204, 0.3);
  background: #fff;
}

.stat-icon-wrapper {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.4s ease;
  position: relative;
  z-index: 1;
}

.download-stat-item:hover .stat-icon-wrapper {
  background: linear-gradient(135deg, #0066CC 0%, #4A90E2 100%);
  transform: rotate(5deg) scale(1.1);
}

.stat-icon {
  width: 32px;
  height: 32px;
  transition: all 0.4s ease;
}

.download-stat-item:hover .stat-icon {
  color: #fff;
  transform: scale(1.1);
}

/* 确保下载区图标默认不是白色，与蓝色主题协调 */
.download-stats .stat-icon-wrapper svg,
.download-stats .stat-icon {
  color: #0066CC;
}

.download-stats .download-stat-item:hover .stat-icon {
  color: #fff;
}

.stat-content {
  flex: 1;
  position: relative;
  z-index: 1;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #0066CC, #4A90E2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.4rem;
  line-height: 1.2;
  transition: all 0.3s ease;
}

.download-stat-item:hover .stat-value {
  transform: translateX(3px);
}

.stat-label {
  font-size: 1.05rem;
  color: #666;
  font-weight: 500;
  letter-spacing: 0.3px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 1400px;
  margin: -3rem auto 4rem; /* Overlap hero */
  padding: 0 2rem;
  position: relative;
  z-index: 10;
}

@media (max-width: 1200px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

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

@media (max-width: 768px) {
  .download-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 0 1rem;
  }
}

.platform-card {
  background: #fff;
  padding: 2rem 1.5rem;
  border-radius: 20px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.1);
  text-align: center;
  transition: var(--transition);
  border: 2px solid transparent;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  overflow: hidden;
  height: 100%;
}

.platform-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.05), transparent);
  transition: left 0.5s;
}

.platform-card:hover::before {
  left: 100%;
}

.platform-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
  border-color: rgba(0, 102, 204, 0.2);
}

.platform-card.featured {
  border: 2px solid var(--primary-color);
  background: linear-gradient(135deg, #fff 0%, #F0F7FF 100%);
}

.platform-card.featured::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 60px 60px 0;
  border-color: transparent var(--primary-color) transparent transparent;
}

.platform-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  background: var(--primary-gradient);
  color: #fff;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 1.05rem;
  font-weight: 600;
  z-index: 2;
  box-shadow: 0 2px 10px rgba(0, 102, 204, 0.3);
}

.platform-icon-wrapper {
  width: 100px;
  height: 100px;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #F0F7FF 0%, #E3F2FD 100%);
  border-radius: 20px;
  transition: var(--transition);
}

.platform-card:hover .platform-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
  background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
}

.platform-icon {
  width: 70px;
  height: 70px;
  object-fit: contain;
  transition: var(--transition);
}

.platform-icon-svg {
  width: 60px;
  height: 60px;
  fill: var(--primary-color);
  transition: var(--transition);
}

.platform-card:hover .platform-icon-svg {
  transform: scale(1.1);
}

.platform-features {
  display: flex;
  gap: 0.4rem;
  margin: 1rem 0;
  flex-wrap: wrap;
  justify-content: center;
  min-height: 4.5rem;
  align-items: flex-start;
}

.feature-tag {
  background: rgba(0, 102, 204, 0.08);
  color: var(--primary-color);
  padding: 0.35rem 0.7rem;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 500;
  white-space: nowrap;
  line-height: 1.4;
}

.download-btn {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.download-btn .btn-download,
.download-btn .pcgetDown {
  width: 100%;
  max-width: 286px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: inline-block;
  text-align: center;
  margin: 0 auto;
}

/* 平台卡片中的下载按钮 - 文字完整显示 */
.platform-card .download-btn {
  width: 100%;
}

.platform-card .download-btn .btn-download,
.platform-card .download-btn .pcgetDown {
  max-width: 100%;
  width: 100%;
  padding: 0.8rem 1.5rem;
  font-size: 1.05rem;
  white-space: nowrap;
  overflow: visible;
  text-overflow: clip;
}

.platform-info {
  margin-top: 1rem;
  font-size: 1rem;
  color: #999;
  line-height: 1.6;
  min-height: 2.8rem;
}

.download-progress {
  width: 100%;
  height: 4px;
  background: #e0e0e0;
  border-radius: 2px;
  margin-top: 1rem;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--primary-gradient);
  width: 0%;
  transition: width 0.3s;
  animation: progress 2s infinite;
  border-radius: 2px;
}

@keyframes progress {
  0% { width: 0%; }
  50% { width: 70%; }
  100% { width: 100%; }
}

.platform-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
  color: var(--secondary-color);
}

.platform-desc {
  font-size: 1rem;
  color: #666;
  line-height: 1.6;
  margin-bottom: 1rem;
  min-height: 3.2rem;
}

.platform-card p {
  color: #666;
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

.version-table {
  max-width: 1000px;
  margin: 4rem auto;
  padding: 0 1rem;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
}

.version-table-wrapper {
  overflow-x: auto;
}

.version-table table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.version-table th, .version-table td {
  padding: 1.5rem;
  text-align: center;
  border-bottom: 1px solid #eee;
}

.version-table th {
  background: linear-gradient(135deg, #f9f9f9 0%, #f0f0f0 100%);
  font-weight: 700;
  color: var(--secondary-color);
  position: relative;
}

.version-table th.highlight-col {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: #fff;
}

.version-table td.highlight-col {
  background: rgba(0, 102, 204, 0.04);
  font-weight: 500;
}

.version-table tr:hover td {
  background: rgba(0, 102, 204, 0.02);
}

.version-table tr:hover td.highlight-col {
  background: rgba(0, 102, 204, 0.06);
}

.version-table tr:last-child td {
  border-bottom: none;
}

.check-icon {
  color: #28a745;
  font-weight: bold;
  font-size: 1.2rem;
}

.download-faq {
  padding: 5rem 1rem;
  background: var(--bg-light);
}

.download-faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.faq-card {
  background: #fff;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
  border-left: 4px solid var(--primary-color);
}

.faq-card h3 {
  color: var(--primary-color);
}

.faq-card:hover {
  border-left-color: var(--primary-dark);
}

.faq-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.faq-card h3 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.faq-card p {
  color: #666;
  line-height: 1.7;
  font-size: 1.05rem;
}


/* Help & Privacy Page Styles */
.page-header {
  background: linear-gradient(135deg, #0066CC, #0052A3);
  color: #fff;
  padding: 4rem 1rem;
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.page-content {
  max-width: 800px;
  margin: 3rem auto;
  padding: 0 1rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  padding: 2rem;
}

.help-search {
  max-width: 600px;
  margin: 2rem auto 0;
  position: relative;
}

.help-search input {
  width: 100%;
  padding: 1rem 1.5rem;
  border-radius: 50px;
  border: none;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  font-size: 1rem;
}

.faq-item {
  border-bottom: 1px solid #eee;
  padding: 1.5rem 0;
}

.faq-item h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
  cursor: pointer;
}

.faq-item p {
  color: #555;
  display: block; /* Simple static display */
}

.privacy-content h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  color: var(--primary-color);
}

.privacy-content p {
  margin-bottom: 1rem;
  color: #555;
  line-height: 1.8;
}


/* Scenarios Section */
.scenarios {
  padding: 6rem 1rem;
  background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
  position: relative;
}

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  align-items: stretch;
}

.scenario-card {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  background: #fff;
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid rgba(0, 102, 204, 0.1);
}

.scenario-card:hover {
  transform: translateY(-5px);
}

.scenario-img {
  height: auto;
  min-height: 200px;
  width: 100%;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  /* Fallback gradients used in HTML, can be replaced by images later */
}

.scenario-image {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
  transition: transform 0.4s ease;
  display: block;
}

.scenario-card:hover .scenario-image {
  transform: scale(1.05);
}

.scenario-content {
  padding: 1.5rem;
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.scenario-content-image {
  width: 100%;
  height: auto;
  max-height: 200px;
  object-fit: contain;
  margin-bottom: 1rem;
  border-radius: 8px;
  transition: transform 0.4s ease;
}

.scenario-content h3 {
  margin-bottom: 0.5rem;
  color: var(--secondary-color);
}

.scenario-content p {
  color: #666;
  font-size: 1.05rem;
}

/* Partners Section */
.partners {
  padding: 6rem 1rem;
  background: linear-gradient(180deg, #F8FAFF 0%, #fff 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.partners::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.3), transparent);
}

.partners::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.partners .section-title {
  margin-bottom: 4rem;
  position: relative;
  z-index: 1;
}

.partners-logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.partner-logo {
  font-size: 1.1rem;
  font-weight: 600;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 2rem 1.5rem;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.08);
  border: 1px solid rgba(0, 102, 204, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
}

.partner-logo::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.1), transparent);
  transition: left 0.5s;
}

.partner-logo:hover::before {
  left: 100%;
}

.partner-logo:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 102, 204, 0.15);
  border-color: rgba(0, 102, 204, 0.3);
  color: var(--primary-color);
  background: linear-gradient(135deg, #fff 0%, #F0F7FF 100%);
}

.partner-logo::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.partner-logo:hover::after {
  transform: scaleX(1);
}

/* Stats Section */
.stats {
  padding: 4rem 1rem;
  background: linear-gradient(135deg, #0066CC 0%, #4A90E2 50%, #6BA3E8 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 20s infinite ease-in-out;
}

.stats::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 15s infinite ease-in-out reverse;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(30px, 30px) rotate(180deg);
  }
}

.stats-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-item {
  padding: 2rem 1.5rem;
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-item:hover {
  transform: translateY(-10px);
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.stat-icon-wrapper {
  width: 70px;
  height: 70px;
  margin-bottom: 1rem;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.stat-item:hover .stat-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
  background: rgba(255, 255, 255, 0.25);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

.stat-icon-wrapper svg {
  width: 36px;
  height: 36px;
  color: #fff;
  stroke-width: 2;
}

.stat-number {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #fff 0%, #E3F2FD 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  transition: all 0.4s ease;
}

.stat-item:hover .stat-number {
  transform: scale(1.05);
}

.stat-unit {
  font-size: 2.2rem;
  font-weight: 700;
}

.stat-label {
  font-size: 1.2rem;
  opacity: 0.95;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: 0.5px;
}

.stat-description {
  font-size: 1rem;
  opacity: 0.8;
  font-weight: 400;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

/* Testimonials Section */
.testimonials {
  padding: 6rem 1rem;
  background: linear-gradient(180deg, #fff 0%, #F8FAFF 100%);
  position: relative;
  overflow: hidden;
}

.testimonials::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.3), transparent);
}

.testimonials::after {
  content: '';
  position: absolute;
  top: -150px;
  right: -150px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.testimonials .section-title {
  margin-bottom: 4rem;
  position: relative;
  z-index: 1;
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.testimonial-card {
  padding: 2.5rem;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(0, 102, 204, 0.08);
  border: 1px solid rgba(0, 102, 204, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.testimonial-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.testimonial-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 40px rgba(0, 102, 204, 0.15);
  border-color: rgba(0, 102, 204, 0.2);
}

.testimonial-card:hover::after {
  transform: scaleX(1);
}

.testimonial-rating {
  display: flex;
  gap: 0.3rem;
  margin-bottom: 1.5rem;
  color: #FFB300;
}

.testimonial-rating svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.testimonial-card:hover .testimonial-rating svg {
  transform: scale(1.1);
}

.testimonial-rating svg:nth-child(1) { transition-delay: 0s; }
.testimonial-rating svg:nth-child(2) { transition-delay: 0.05s; }
.testimonial-rating svg:nth-child(3) { transition-delay: 0.1s; }
.testimonial-rating svg:nth-child(4) { transition-delay: 0.15s; }
.testimonial-rating svg:nth-child(5) { transition-delay: 0.2s; }

.testimonial-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #555;
  margin-bottom: 2rem;
  font-style: italic;
  flex: 1;
  position: relative;
  padding-left: 1.5rem;
}

.testimonial-text::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -10px;
  font-size: 4rem;
  color: rgba(0, 102, 204, 0.1);
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(0, 102, 204, 0.1);
}

.author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  flex-shrink: 0;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.2);
  transition: all 0.4s ease;
  font-size: 1.2rem;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.2);
}

.testimonial-card:hover .author-avatar {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 6px 20px rgba(0, 102, 204, 0.3);
}

.author-info {
  flex: 1;
}

.author-name {
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 0.3rem;
  font-size: 1.05rem;
  transition: color 0.3s ease;
}

.testimonial-card:hover .author-name {
  color: var(--primary-color);
}

.author-title {
  font-size: 1rem;
  color: #888;
  font-weight: 500;
}

/* AI Features Section */
.ai-features {
  padding: 6rem 1rem;
  background: linear-gradient(180deg, #F8FAFF 0%, #fff 100%);
  position: relative;
  overflow: hidden;
}

.ai-features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.3), transparent);
}

.ai-features::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.ai-features-container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.ai-features .section-title {
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: #666;
  margin-bottom: 4rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 400;
}

.ai-features-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.ai-feature-item {
  display: flex;
  gap: 1.5rem;
  padding: 2rem;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0, 102, 204, 0.08);
  border: 1px solid rgba(0, 102, 204, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.ai-feature-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.ai-feature-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 102, 204, 0.15);
  border-color: rgba(0, 102, 204, 0.2);
  background: #fff;
}

.ai-feature-item:hover::after {
  transform: scaleX(1);
}

.ai-feature-icon {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
  box-shadow: 0 4px 15px rgba(0, 102, 204, 0.15);
}

.ai-feature-item:hover .ai-feature-icon {
  transform: scale(1.1) rotate(5deg);
  background: linear-gradient(135deg, #BBDEFB 0%, #90CAF9 100%);
  box-shadow: 0 8px 25px rgba(0, 102, 204, 0.25);
}

.ai-feature-icon svg {
  width: 32px;
  height: 32px;
  color: var(--primary-color);
  stroke-width: 2.5;
  transition: all 0.4s ease;
}

.ai-feature-item:hover .ai-feature-icon svg {
  transform: scale(1.1);
}

.ai-feature-text {
  flex: 1;
}

.ai-feature-text h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  color: var(--secondary-color);
  font-weight: 700;
  transition: color 0.3s ease;
}

.ai-feature-item:hover .ai-feature-text h3 {
  color: var(--primary-color);
}

.ai-feature-text p {
  color: #666;
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0;
}

/* FAQ Section */
.faq-section {
  padding: 6rem 1rem;
  background: var(--bg-light);
  position: relative;
}

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

.faq-item {
  background: #fff;
  padding: 2rem;
  margin-bottom: 1rem;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.faq-question {
  font-size: 1.2rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-weight: 600;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary-dark);
}

.faq-answer {
  color: #666;
  line-height: 1.8;
  font-size: 1rem;
}

/* News Section */
.news-section {
  padding: 6rem 1rem 5rem;
  background: linear-gradient(180deg, #fff 0%, #F8FAFF 100%);
  position: relative;
  overflow: hidden;
}

.news-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 102, 204, 0.3), transparent);
}

.news-section::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(0, 102, 204, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.news-card {
  padding: 2.2rem 2rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0, 102, 204, 0.08);
  border: 1px solid rgba(0, 102, 204, 0.1);
  position: relative;
  overflow: hidden;
}

.news-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 35px rgba(0, 102, 204, 0.18);
  border-color: rgba(0, 102, 204, 0.25);
}

.news-date {
  font-size: 1.05rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.9rem;
  border-radius: 999px;
  background: rgba(0, 102, 204, 0.06);
}

.news-date::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-color);
}

.news-title {
  font-size: 1.3rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
  font-weight: 600;
  transition: color 0.3s ease;
}

.news-excerpt {
  color: #666;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.news-link {
  color: var(--primary-color);
  font-weight: 600;
  transition: var(--transition);
  display: inline-block;
}

.news-link:hover {
  color: var(--primary-dark);
  transform: translateX(5px);
}

/* Enhanced Animations */
@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.stat-item {
  animation: fadeInUp 0.6s ease-out;
}

.stat-item:nth-child(1) { animation-delay: 0.1s; }
.stat-item:nth-child(2) { animation-delay: 0.2s; }
.stat-item:nth-child(3) { animation-delay: 0.3s; }
.stat-item:nth-child(4) { animation-delay: 0.4s; }

/* Scroll Animation */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 确保 stats 区域的元素始终可见 */
.stats .stat-item {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

.stats .stat-item.fade-in-up {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* Enhanced hover effects */
.feature-card,
.scenario-card,
.testimonial-card,
.news-card {
  position: relative;
  overflow: hidden;
}

.feature-card::before,
.scenario-card::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;
}

.feature-card:hover::before,
.scenario-card:hover::before {
  left: 100%;
}

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