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

:root {
  --primary-purple: #8b3eff;
  --dark-purple: #6b2acc;
  --light-purple: #a855f7;
  --bg-black: #0a0a0f;
  --bg-dark: #14141f;
  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --bg-gray: #f3f4f6;
  --text-white: #ffffff;
  --text-black: #1a1a1a;
  --text-dark: #2d2d2d;
  --text-gray: #6b7280;
  --text-light: #e0e0e0;
  --border-light: #e5e7eb;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
  background: var(--bg-white);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: all 0.3s ease;
  height: var(--pc-header-height);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.nav-container {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 500;
  cursor: pointer;
}

.logo-icon {
  width: var(--header-logo-pc-width, 40px);
  height: auto;
}

.logo-text {
  color: var(--text-black);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 35px;
}

.nav-link {
  color: var(--text-dark);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-purple);
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--primary-purple);
}

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

/* Added dropdown menu styles */
.nav-item-dropdown {
  position: relative;
}

.nav-link-dropdown {
  display: flex;
  align-items: center;
  gap: 5px;
}

.dropdown-arrow {
  font-size: 10px;
  transition: transform 0.3s ease;
}

.nav-item-dropdown:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 15px;
  background: var(--bg-white);
  /* border: 1px solid var(--border-light); */
  /* border-radius: 12px; */
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  min-width: 150px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
  overflow: hidden;
}

.nav-item-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 12px 20px;
  color: var(--text-dark);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.3s ease;
  border-bottom: 1px solid var(--border-light);
}

.dropdown-item:last-child {
  border-bottom: none;
}

.dropdown-item:hover {
  background: rgba(139, 62, 255, 0.08);
  color: var(--primary-purple);
  padding-left: 25px;
}

.btn-trial {
  background: linear-gradient(135deg, var(--primary-purple), var(--light-purple));
  color: #ffffff;
  padding: 12px 28px;
  border-radius: 50px;
  border: none;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(139, 62, 255, 0.3);
}

.btn-trial:hover {
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(139, 62, 255, 0.5);
}

.mobile-header-cta {
  display: none;
  margin-left: auto;
  margin-right: 20px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hero {
  padding: 80px 40px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
  /* min-height: 100vh; */
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #ffffff, #faf5ff);
}

.hero-bg-effect {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(139, 62, 255, 0.08), transparent 70%);
  animation: pulse 4s ease-in-out infinite;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
}

.hero-title {
  font-size: var(--pc-font-size, 36px);
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 50px;
  color: var(--text-black);
}

.gretting {
  font-size: 0.95em;
}

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

.brand-highlight {
  color: var(--primary-purple);
  font-size: 1.12em;
}

.btn-cta {
  background: linear-gradient(135deg, var(--primary-purple), var(--light-purple));
  color: #ffffff;
  padding: 18px 45px;
  border-radius: 50px;
  border: none;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 6px 30px rgba(139, 62, 255, 0.4);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.btn-cta:hover {
  color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(139, 62, 255, 0.6);
}

.btn-large {
  padding: 20px 50px;
  font-size: 20px;
}

.btn-icon {
  font-size: 24px;
  transition: transform 0.3s ease;
}

.btn-cta:hover .btn-icon {
  transform: translateX(5px);
}

.stats-section {
  padding: var(--pc-padding-y, 40px) 40px;
  background: var(--bg-color, var(--bg-light));
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  text-align: center;
}

.stat-item {
  padding: 30px 0;
}

.stat-number {
  font-size: var(--number-pc-font-size, 48px);
  font-weight: 500;
  background: linear-gradient(135deg, var(--primary-purple), var(--light-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}

.stat-number::after {
  content: attr(data-unit);
}

.stat-label {
  color: var(--text-gray);
  font-size: 16px;
  font-weight: 500;
}

.platform-section {
  padding: var(--pc-padding-top, 100px) 40px var(--pc-padding-bottom, 100px);
  background: var(--bg-color, var(--bg-white));
}

.section-title {
  text-align: center;
  font-size: 48px;
  font-weight: 500;
  margin-bottom: 60px;
  background: linear-gradient(135deg, var(--text-black), var(--primary-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.platform-scroll-container {
  overflow: hidden;
  margin-bottom: 60px;
  position: relative;
  display: flex;
  white-space: nowrap;
}

.platform-scroll-container::before,
.platform-scroll-container::after {
  content: "";
  position: absolute;
  top: 0;
  width: 100px;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.platform-scroll-container::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-white), transparent);
}

.platform-scroll-container::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-white), transparent);
}

.platform-scroll {
  display: flex;
  gap: 40px;
  min-width: 100%;
  flex-shrink: 0;
  animation: scroll 30s linear infinite;
  padding-right: 40px;
}

@keyframes scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-100%);
  }
}

.platform-scroll-container:hover .platform-scroll {
  animation-play-state: paused;
}

.platform-logo-item {
  flex-shrink: 0;
  padding: 10px 20px;
  background: rgba(139, 62, 255, 0.05);
  border: 1px solid rgba(139, 62, 255, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.platform-logo-item img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.proctoring-support {
  text-align: center;
}

.proctoring-text {
  font-size: 20px;
  color: var(--text-gray);
  margin-bottom: 30px;
}

.proctoring-container {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.proctoring-scroll-wrapper {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
}

.proctoring-scroll-wrapper::-webkit-scrollbar {
  display: none;
}

.proctoring-scroll-wrapper:active {
  cursor: grabbing;
}

.proctoring-grid {
  display: flex;
  gap: 20px;
  padding: 0 20px;
  min-width: max-content;
}

/* 桌面端网格布局 */
@media (min-width: 769px) {
  .proctoring-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
    padding: 0;
    min-width: auto;
  }
  
  .proctoring-scroll-wrapper {
    overflow: visible;
    cursor: default;
  }
}

.proctoring-card {
  background: var(--bg-white);
  border: 2px solid var(--primary-purple);
  border-radius: 16px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(139, 62, 255, 0.1);
  flex-shrink: 0;
  min-width: 200px;
}

.proctoring-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(139, 62, 255, 0.25);
}

.proctoring-card img {
  width: 80px;
  height: 80px;
  object-fit: contain;
}

.proctoring-card span {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-dark);
}


/* 移动端优化 */
@media (max-width: 768px) {
  .proctoring-card {
    padding: 20px;
    min-width: 180px;
  }
  
  .proctoring-card img {
    width: 60px;
    height: 60px;
  }
  
  .proctoring-card span {
    font-size: 14px;
  }
  
  .proctoring-grid {
    gap: 15px;
    padding: 0 15px;
  }
}

.pain-points-section {
  padding: var(--pc-padding-top, 100px) 40px var(--pc-padding-bottom, 100px);
  background: var(--bg-color, var(--bg-light));
}

.pain-container {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.pain-scroll-wrapper {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
}

.pain-scroll-wrapper::-webkit-scrollbar {
  display: none;
}

.pain-scroll-wrapper:active {
  cursor: grabbing;
}

.pain-grid {
  display: flex;
  gap: 20px;
  padding: 0 20px;
  min-width: max-content;
  margin-bottom: 60px;
}

/* 桌面端网格布局 */
@media (min-width: 769px) {
  .pain-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(300px, 350px));
    gap: 30px;
    padding: 0;
    min-width: auto;
    justify-content: center;
  }
  
  .pain-scroll-wrapper {
    overflow: visible;
    cursor: default;
  }
}

.pain-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 35px;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  flex-shrink: 0;
  min-width: 280px;
  max-width: 350px;
  width: 100%;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.pain-card:hover {
  transform: scale(1.05);
  border-color: var(--primary-purple);
  box-shadow: 0 10px 30px rgba(139, 62, 255, 0.15);
}

.pain-icon {
  font-size: 48px;
  margin-bottom: 15px;
}

.pain-card h3 {
  font-size: 22px;
  color: var(--primary-purple);
  margin-bottom: 10px;
}

.pain-card p {
  color: var(--text-gray);
  font-size: 15px;
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: normal;
  line-height: 1.5;
}

.pain-description {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px;
  background: rgba(139, 62, 255, 0.05);
  border-left: 4px solid var(--primary-purple);
  border-radius: 8px;
}

.pain-description p {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-dark);
}

.pain-description strong {
  color: var(--primary-purple);
}

.features-section {
  padding: var(--pc-padding-top, 100px) 40px var(--pc-padding-bottom, 100px);
  background: var(--bg-color, var(--bg-white));
}

.features-container {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.features-scroll-wrapper {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
}

.features-scroll-wrapper::-webkit-scrollbar {
  display: none;
}

.features-scroll-wrapper:active {
  cursor: grabbing;
}

.features-grid {
  display: flex;
  gap: 20px;
  padding: 0 20px;
  min-width: max-content;
}

/* 桌面端网格布局 */
@media (min-width: 769px) {
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    padding: 0;
    min-width: auto;
  }
  
  .features-scroll-wrapper {
    overflow: visible;
    cursor: default;
  }
}

.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 40px;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  flex-shrink: 0;
  min-width: 300px;
  max-width: 400px;
  width: 100%;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(139, 62, 255, 0.05), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-purple);
  box-shadow: 0 10px 40px rgba(139, 62, 255, 0.2);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.feature-icon {
  font-size: 0;
  margin-bottom: 20px;
  width: calc(100% + 80px);
  margin-left: -40px;
  aspect-ratio: 5 / 3;
}

.feature-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-card h3 {
  font-size: 24px;
  color: var(--primary-purple);
  margin-bottom: 15px;
}

.feature-card p {
  color: var(--text-gray);
  line-height: 1.8;
  margin-bottom: 20px;
  font-size: 16px;
}

.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  color: var(--text-dark);
  padding: 8px 0;
  font-size: 15px;
}

.video-section {
  padding: 100px 40px;
  background: var(--bg-light);
}

.video-container {
  max-width: 1000px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  background: rgba(139, 62, 255, 0.05);
  border: 2px solid rgba(139, 62, 255, 0.2);
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 4px 20px rgba(139, 62, 255, 0.1);
}

.video-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.video-placeholder:hover {
  background: rgba(139, 62, 255, 0.08);
}

.play-button {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-purple), var(--light-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: #ffffff;
  transition: all 0.3s ease;
}

.video-placeholder:hover .play-button {
  transform: scale(1.1);
}

.video-placeholder p {
  font-size: 18px;
  color: var(--text-gray);
}

.comparison-section {
  padding: 100px 40px;
  background: var(--bg-white);
}

.comparison-table {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 20px;
  background: var(--bg-light);
  border-radius: 20px;
  padding: 30px;
  border: 1px solid var(--border-light);
}

.comparison-column {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.comparison-header {
  font-size: 20px;
  font-weight: 700;
  padding: 20px;
  text-align: center;
  background: rgba(139, 62, 255, 0.08);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--text-dark);
}

.comparison-blacktom .comparison-header {
  background: linear-gradient(135deg, rgba(139, 62, 255, 0.15), rgba(168, 85, 247, 0.1));
  border: 2px solid var(--primary-purple);
  color: var(--primary-purple);
}

.comparison-item {
  padding: 18px;
  background: var(--bg-white);
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 70px;
  border: 1px solid var(--border-light);
}

.comparison-features .comparison-item {
  font-weight: 600;
  color: var(--text-dark);
  justify-content: center;
}

.check {
  color: #10b981;
  font-size: 20px;
  font-weight: 900;
}

.cross {
  color: #ef4444;
  font-size: 20px;
  font-weight: 900;
}

.highlight {
  color: var(--text-dark);
}

.highlight strong {
  color: var(--primary-purple);
  font-weight: 700;
}

.disabled {
  color: var(--text-gray);
  text-decoration: line-through;
}

.pricing-section {
  padding: var(--pc-padding-top, 100px) 40px var(--pc-padding-bottom, 100px);
  background: var(--bg-color, var(--bg-light));
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-white);
  border: 2px solid var(--border-light);
  border-radius: 24px;
  padding: 40px;
  position: relative;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(139, 62, 255, 0.15);
}

.pricing-featured {
  border-color: var(--primary-purple);
  background: linear-gradient(135deg, rgba(139, 62, 255, 0.05), rgba(168, 85, 247, 0.03));
}

.pricing-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(139, 62, 255, 0.1);
  border: 1px solid var(--primary-purple);
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-purple);
  margin-bottom: 20px;
}

.pricing-badge-featured {
  background: linear-gradient(135deg, var(--primary-purple), var(--light-purple));
  color: #ffffff;
  border: none;
}

.featured-label {
  position: absolute;
  top: -15px;
  right: 40px;
  background: linear-gradient(135deg, var(--primary-purple), var(--light-purple));
  color: #ffffff;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(139, 62, 255, 0.4);
}

.pricing-title {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 30px;
  color: var(--text-dark);
}

.pricing-content {
  margin-bottom: 30px;
}

.pricing-section-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-purple);
  margin: 25px 0 15px;
}

.pricing-list {
  list-style: none;
  padding: 0;
}

.pricing-list li {
  padding: 10px 0;
  color: var(--text-dark);
  font-size: 16px;
}

.btn-pricing {
  display: block;
  text-align: center;
  width: 100%;
  padding: 16px;
  background: rgba(139, 62, 255, 0.1);
  border: 2px solid var(--primary-purple);
  border-radius: 12px;
  color: var(--primary-purple);
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-pricing:hover {
  background: var(--primary-purple);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(139, 62, 255, 0.3);
}

.btn-pricing-featured {
  background: linear-gradient(135deg, var(--primary-purple), var(--light-purple));
  border: none;
  color: #ffffff;
}

.btn-pricing-featured:hover {
  box-shadow: 0 8px 30px rgba(139, 62, 255, 0.5);
}

.product-compare-section {
  padding: var(--pc-padding-top, 100px) 40px var(--pc-padding-bottom, 100px);
  background: var(--bg-color, var(--bg-white));
}

.testimonials-section {
  padding: var(--pc-padding-top, 100px) 40px var(--pc-padding-bottom, 100px);
  background: var(--bg-color, var(--bg-white));
}

.testimonials-container {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.testimonials-scroll-wrapper {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
}

.testimonials-scroll-wrapper::-webkit-scrollbar {
  display: none;
}

.testimonials-scroll-wrapper:active {
  cursor: grabbing;
}

.testimonials-grid {
  display: flex;
  gap: 20px;
  padding: 0 20px;
  min-width: max-content;
}

/* 桌面端网格布局 */
@media (min-width: 769px) {
  .testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
    min-width: auto;
  }
  
  .testimonials-scroll-wrapper {
    overflow: visible;
    cursor: default;
  }

  .testimonial-card {
    min-width: auto;
    max-width: none;
    width: auto;
  }
}

.testimonial-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 30px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  flex-shrink: 0;
  min-width: 300px;
}

.testimonial-card:hover {
  border-color: var(--primary-purple);
  box-shadow: 0 10px 30px rgba(139, 62, 255, 0.15);
  transform: translateY(-5px);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 2px solid var(--primary-purple);
}

.testimonial-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
}

.testimonial-date {
  font-size: 14px;
  color: var(--text-gray);
}

.testimonial-content {
  color: var(--text-dark);
  line-height: 1.8;
  font-size: 16px;
}

.final-cta-section {
  padding: var(--pc-padding-y, 100px) 40px;
  background: linear-gradient(135deg, rgba(139, 62, 255, 0.08), rgba(168, 85, 247, 0.05));
  text-align: center;
}

.final-cta-content {
  max-width: 800px;
  margin: 0 auto;
}

.final-cta-title {
  font-size: var(--pc-title-font-size, 48px);
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 25px;
  color: var(--text-black);
}

.final-cta-subtitle {
  font-size: 20px;
  color: var(--text-dark);
  margin-bottom: 40px;
}

.final-cta-subtitle strong {
  color: var(--primary-purple);
}

.footer {
  padding: 60px 40px 30px;
  background: var(--bg-light);
  border-top: 1px solid var(--border-light);
}

.footer-container {
  display: flex;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 40px;
  flex: 1;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 15px;
  min-width: 200px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 500;
}

.footer-tagline {
  color: var(--text-gray);
  font-size: 16px;
}

.footer-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--text-gray);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-light);
  color: var(--text-gray);
  font-size: 14px;
}

.footer.dark {
  background-color: var(--bg-dark);
  .logo-text, .footer-title {
    color: var(--text-white);
  }
  .footer-tagline, .footer-links a, .footer-bottom {
    color: var(--text-light);
  }
}

video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 1024px) {
  .comparison-table {
    grid-template-columns: 1fr 2fr 1fr;
    gap: 15px;
    padding: 25px;
  }

  .comparison-section .container {
    overflow-x: auto;
  }

  .comparison-column {
    display: flex;
  }

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

@media (max-width: 960px) {
  .nav-container {
    padding: 0 15px;
  }

  .navbar {
    height: var(--mobile-header-height);
  }

  .logo-icon {
    width: var(--header-logo-mobile-width, 40px);
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    padding: 20px 20px 40px 20px;
    transition: left 0.3s ease;
    border-right: 1px solid var(--border-light);
    align-items: flex-start;
    overflow-y: auto;
    gap: 20px;
  }

  .nav-menu.active {
    left: 0;
  }

  /* Mobile dropdown menu styles */
  .nav-item-dropdown {
    width: 100%;
  }

  .nav-link-dropdown {
    width: 100%;
    justify-content: space-between;
  }

  .dropdown-menu {
    position: static;
    margin-top: 0;
    margin-left: 0;
    box-shadow: none;
    border: none;
    /* border-left: 2px solid var(--primary-purple); */
    border-radius: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: max-height 0.3s ease, margin-top 0 0.3s;
    background: transparent;
  }

  .nav-item-dropdown.active .dropdown-menu {
    max-height: 200px;
    margin-top: 10px;
  }

  .nav-item-dropdown .dropdown-arrow {
    transform: rotate(0deg) !important;
  }

  .nav-item-dropdown.active .dropdown-arrow {
    transform: rotate(180deg) !important;
  }

  .dropdown-item {
    padding: 10px 15px 10px 30px;
    font-size: 14px;
    border-bottom: none;
  }

  .dropdown-item:hover {
    padding-left: 35px;
    background: rgba(139, 62, 255, 0.05);
  }

  .hamburger {
    display: flex;
  }

  .mobile-header-cta {
    display: block;
  }
}

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

  

  .hero {
    padding: 60px 15px 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: 28px;
    margin-bottom: 30px;
  }

  .brand-highlight {
    font-size: 24px;
  }

  .section-title {
    font-size: 28px;
    margin-bottom: 40px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .stat-item {
    padding: 20px 10px;
  }

  .stat-number {
    font-size: 36px;
  }

  .stat-label {
    font-size: 13px;
  }

  .stats-section,
  .platform-section,
  .pain-points-section,
  .features-section,
  .video-section,
  .comparison-section,
  .pricing-section,
  .testimonials-section {
    padding: 60px 15px;
  }

  .stats-section {
    padding-top: 0 !important;
    padding-bottom: 0 !important;
  }

  .final-cta-section {
    padding: 80px 15px;
  }

  .pain-grid {
    gap: 15px;
    padding: 0 15px;
    margin-bottom: 40px;
  }

  .pain-card {
    padding: 25px 15px;
    min-width: 250px;
    max-width: 300px;
    width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .pain-icon {
    font-size: 36px;
    margin-bottom: 10px;
  }

  .pain-card h3 {
    font-size: 16px;
    margin-bottom: 5px;
  }

  .pain-card p {
    font-size: 13px;
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: normal;
    line-height: 1.4;
  }

  .pain-description {
    padding: 25px 20px;
  }

  .pain-description p {
    font-size: 15px;
    line-height: 1.6;
  }

  .features-grid {
    gap: 15px;
    padding: 0 15px;
  }

  .feature-card {
    padding: 30px 25px;
    min-width: 280px;
    max-width: 320px;
    width: 100%;
  }

  .feature-icon {
    font-size: 40px;
    margin-bottom: 15px;
    width: calc(100% + 50px);
    margin-left: -25px;
  }

  .feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
  }

  .feature-card p {
    font-size: 14px;
    margin-bottom: 15px;
  }

  .comparison-table {
    grid-template-columns: 0.7fr 1.4fr 0.7fr;
    gap: 6px;
    padding: 12px;
    width: 100%;
    box-sizing: border-box;
  }

  .comparison-header {
    font-size: 11px;
    padding: 10px 4px;
    line-height: 1.2;
  }

  .comparison-header img {
    width: 18px;
    height: 18px;
  }

  .comparison-item {
    padding: 8px 4px;
    font-size: 10px;
    min-height: 45px;
    line-height: 1.3;
  }

  .pricing-grid {
    grid-template-columns: 1fr 1fr;
    gap: 15px;
  }
  
  .pricing-card {
    padding: 20px;
  }
  
  .pricing-title {
    font-size: 20px;
    margin-bottom: 15px;
  }
  
  .pricing-section-title {
    font-size: 14px;
    margin: 15px 0 8px;
  }
  
  .pricing-list li {
    padding: 5px 0;
    font-size: 12px;
  }
  
  .pricing-badge {
    padding: 4px 12px;
    font-size: 12px;
  }
  
  .btn-pricing {
    padding: 10px;
    font-size: 14px;
  }

  .testimonials-grid {
    gap: 15px;
    padding: 0 15px;
  }

  .testimonial-card {
    min-width: 280px;
    max-width: 350px;
    width: 100%;
    padding: 25px;
  }
}

/* 超小屏幕优化 (320px - 480px) */
@media (max-width: 480px) {
  .pricing-grid {
    gap: 10px;
  }
  
  .pricing-card {
    padding: 15px;
  }
  
  .pricing-title {
    font-size: 18px;
    margin-bottom: 12px;
  }
  
  .pricing-section-title {
    font-size: 12px;
    margin: 12px 0 6px;
  }
  
  .pricing-list li {
    padding: 3px 0;
    font-size: 11px;
  }
  
  .pricing-badge {
    padding: 3px 8px;
    font-size: 11px;
  }
  
  .btn-pricing {
    padding: 8px;
    font-size: 12px;
  }

  .final-cta-title {
    font-size: 32px;
  }

  .final-cta-subtitle {
    font-size: 16px;
    margin-bottom: 30px;
  }

  .check,
  .cross {
    font-size: 14px;
    flex-shrink: 0;
  }

  .footer-container {
    flex-direction: column;
    gap: 30px;
  }

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

@media (max-width: 480px) {
  .nav-container {
    padding: 0 10px;
  }

  .hero {
    padding: 50px 10px 50px;
  }

  .hero-title {
    font-size: 22px;
    margin-bottom: 25px;
  }

  .brand-highlight {
    font-size: 20px;
  }

  .btn-large {
    padding: 14px 30px;
    font-size: 15px;
  }

  .btn-cta {
    padding: 14px 30px;
    font-size: 15px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .stat-number {
    font-size: 32px;
  }

  .stat-label {
    font-size: 12px;
  }

  .section-title {
    font-size: 24px;
    margin-bottom: 30px;
  }

  .stats-section,
  .platform-section,
  .pain-points-section,
  .features-section,
  .video-section,
  .comparison-section,
  .pricing-section,
  .testimonials-section {
    padding: 50px 16px;
  }

  .final-cta-section {
    padding: 60px 10px;
  }

  .testimonials-grid {
    gap: 12px;
    padding: 0 12px;
  }

  .testimonial-card {
    min-width: 260px;
    max-width: 320px;
    width: 100%;
    padding: 20px;
  }

  .pain-grid {
    gap: 12px;
    padding: 0 12px;
  }

  .pain-card {
    padding: 20px 12px;
    min-width: 220px;
    max-width: 280px;
    width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .pain-icon {
    font-size: 32px;
  }

  .pain-card h3 {
    font-size: 14px;
  }

  .pain-card p {
    font-size: 12px;
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: normal;
    line-height: 1.3;
  }

  .footer {
    padding: 40px 16px 20px;
  }

  .comparison-table {
    grid-template-columns: 0.65fr 1.4fr 0.65fr;
    gap: 5px;
    padding: 10px;
  }

  .comparison-header {
    font-size: 10px;
    padding: 8px 3px;
  }

  .comparison-header img {
    width: 16px;
    height: 16px;
  }

  .comparison-item {
    padding: 6px 3px;
    font-size: 9px;
    min-height: 40px;
  }

  .check,
  .cross {
    font-size: 12px;
  }
}