:root {
  /* 橙红色调 */
  --primary-color: #ff4500;
  --primary-light: #ff7043;
  --primary-dark: #c63600;
  --secondary-color: #ff9800;
  --secondary-light: #ffb74d;
  --secondary-dark: #f57c00;
  
  /* 中性色 */
  --bg-light: #f9f9f9;
  --bg-dark: #1a1a1a;
  --text-light: #ffffff;
  --text-dark: #333333;
  --text-muted: #666666;
  
  /* 科技感元素 */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  --gradient-secondary: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
  --glow-effect: 0 0 20px rgba(255, 69, 0, 0.3);
  --shadow-effect: 0 10px 30px rgba(0, 0, 0, 0.1);
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;
  
  /* 字体 */
  --font-primary: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-heading: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  
  /* 过渡效果 */
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
  overflow-x: hidden;
}

/* RTL language support (ar/fa/he/ur) */
html[dir="rtl"] body {
  /*
    不对整个页面做 RTL 镜像（会让布局左右颠倒）。
    仅让文本区域按 RTL 排版即可。
  */
  direction: ltr;
}

html[dir="rtl"] .hero-text {
  text-align: right;
  direction: rtl;
}

html[dir="rtl"] .nav-links a::after {
  left: auto;
  right: 0;
}

html[dir="rtl"] .btn-info {
  text-align: right;
  direction: rtl;
}

/* 常见文字块：RTL 仅影响文本，不翻转布局 */
html[dir="rtl"] .section-header,
html[dir="rtl"] .section-title,
html[dir="rtl"] .section-desc,
html[dir="rtl"] .voice-card,
html[dir="rtl"] .service-card,
html[dir="rtl"] .scenario-content,
html[dir="rtl"] .download-content,
html[dir="rtl"] .footer-container {
  direction: rtl;
  text-align: right;
}

/* 容器 */
.section-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

/* 头部 */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: transparent;
  backdrop-filter: none;
  box-shadow: none;
  z-index: 1000;
  transition: var(--transition);
  padding: var(--spacing-sm) 0;
}

nav.scrolled {
  background: linear-gradient(135deg, rgba(255, 69, 0, 0.95), rgba(255, 152, 0, 0.95));
  backdrop-filter: blur(10px);
  padding: var(--spacing-xs) 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  transition: all 0.3s ease-out;
}

.nav-container {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  width: 100%;
  max-width: none;
  margin: 0;
  /* 与视口左右对齐，避免与正文 1200px 容器同宽导致品牌看起来“缩在中间” */
  padding: 0 clamp(12px, 3vw, 40px);
  gap: clamp(8px, 1vw, 20px);
  box-sizing: border-box;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  text-decoration: none;
  color: var(--text-dark);
  transition: var(--transition);
  flex: 0 0 auto;
  position: relative;
  z-index: 2;
}

nav.scrolled .logo {
  color: white;
}

.logo-icon {
  color: var(--text-dark);
  transition: var(--transition);
	width:3.0rem;
	height:3.0rem;
	background: url(../images/logo.png) no-repeat center;
	background-size:100% auto;
}
.logo-icon img {
	width:100%;
}

nav.scrolled .logo-icon {
  background: url(../images/logo_w.png) no-repeat center;
	background-size:100% auto;
}

.logo-text {
  font-size: clamp(1.1rem, 1.6vw, 1.5rem);
  font-weight: 700;
	color: #fff;
  white-space: nowrap;
}

.nav-center {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 1 1 auto;
  min-width: 0;
  justify-content: flex-start;
  /* 仅允许横向滚动；勿设 overflow-x:auto 而不限制 y，否则会出现纵向滚动条 */
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
}

.nav-center::-webkit-scrollbar {
  height: 4px;
}

.nav-center::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.35);
  border-radius: 4px;
}

.nav-links {
  display: flex;
  gap: clamp(8px, 1.2vw, var(--spacing-md));
  list-style: none;
  flex: 0 1 auto;
  min-width: min-content;
  justify-content: flex-start;
  flex-wrap: nowrap;
}

.nav-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
  font-size: clamp(12px, 0.95vw, 16px);
}

nav.scrolled .nav-links a {
  color: white;
}

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

nav.scrolled .nav-links a:hover {
  color: rgba(255, 255, 255, 0.8);
}

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

nav.scrolled .nav-links a::after {
  background: white;
}

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

.nav-links a.active {
  color: var(--primary-color);
}

nav.scrolled .nav-links a.active {
  color: white;
}

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

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
  margin-inline-start: auto;
  position: relative;
  z-index: 2;
}

.lang-selector {
  position: relative;
  cursor: pointer;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding:0.5rem 1.5rem 0.5rem 1rem;
  border-radius: 8px;
  transition: var(--transition);
  color: var(--text-dark);
  white-space: nowrap;
	background: rgba(255,255,255,.6);
	position:relative;
	z-index: 1;
	min-width: 0;
}
.lang-btn:after {
	content: "";
	position: absolute;
    top: 50%;  
    right: 15px;  
    width: 8px;  
    height: 8px;  
    border-style: solid;  
    border-width: 1px 1px 0 0;  
    border-color: #333;  
    -webkit-transform-origin: 75% 25%;  
    -webkit-transform: rotateZ(135deg);  
    -webkit-transition: 100ms ease-in .1s;  
    transition: 100ms ease-in .1s;  
}

nav.scrolled .lang-btn {
  color: white;
	background: rgba(255,255,255,.3)
}

nav.scrolled .lang-btn:after {
	border-color:#fff;
}

.lang-text {
  white-space: nowrap;
}

.lang-btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: white;
  box-shadow: var(--shadow-effect);
  border-radius: 8px;
  padding: var(--spacing-xs);
  display: none;
  z-index: 1000;
  min-width: 120px;
  max-height: 320px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* Optional: nicer scrollbar for webkit browsers */
.lang-dropdown::-webkit-scrollbar {
  width: 8px;
}
.lang-dropdown::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
}
.lang-dropdown::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.3);
}

.lang-selector.active .lang-dropdown {
  display: block;
}

.lang-option {
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  border-radius: 4px;
  transition: var(--transition);
}

.lang-option:hover {
  background-color: var(--bg-light);
  color: var(--primary-color);
}

.lang-option.active {
  background-color: var(--primary-light);
  color: white;
}

.nav-cta {
  background: white;
  color: var(--primary-color);
  padding: clamp(6px, 0.8vw, var(--spacing-xs)) clamp(12px, 1.4vw, var(--spacing-md));
  border: none;
  border-radius: 25px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-block;
  white-space: nowrap;
  font-size: clamp(12px, 0.95vw, 16px);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  z-index: 1001;
}

.mobile-menu-btn span {
  display: block;
  width: 25px;
  height: 3px;
  background-color:#fff;
  margin: 5px 0;
  transition: var(--transition);
}

nav.scrolled .mobile-menu-btn span {
  background-color: white;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

.nav-right-mobile {
  display: none;
}

/* 英雄区域 */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: white;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 69, 0, 0.85), rgba(255, 152, 0, 0.85));
}

.particle-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  animation: particleFloat 3s ease-in-out infinite;
}

@keyframes particleFloat {
  0%, 100% {
    transform: translateY(0) translateX(0);
    opacity: 0;
  }
  50% {
    transform: translateY(-50px) translateX(20px);
    opacity: 1;
  }
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  filter: blur(30px);
  animation: pulse 4s ease-in-out infinite;
}

.orb-1 {
  width: 300px;
  height: 300px;
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 200px;
  height: 200px;
  bottom: 10%;
  right: 10%;
  animation-delay: 1s;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.3;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.6;
  }
}

.hero-content {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
  min-height: 100vh;
}

.hero-text {
  max-width: 600px;
  text-align: left;
  padding-left: 5%;
}

.hero-badge {
  display:inline-block;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 20px;
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
}

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

.hero-text h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.4;
}

.title-main {
  display: block;
  font-size: 3.5rem;
  margin-bottom: var(--spacing-xs);
}

.title-sub {
  display: block;
  font-size: 1.5rem;
  font-weight: 500;
  opacity: 0.9;
}

.hero-desc {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
	line-height: 1.6;
}
.hero-actions {
  display: flex;
  justify-content: flex-start;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.btn-primary {
  background: white;
  color: var(--primary-color);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: 30px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display:flex;
  align-items: center;
  gap: var(--spacing-xs);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-primary.btn-large {
  padding:1.0rem 2.4rem;
  font-size: 1.3rem;
}

.btn-primary.btn-large i {
	display: block;
	width:1.8rem;
	height:1.8rem;
}
.btn-primary.btn-large i img {
	width:100%;
}

.animate-btn {
  animation: buttonPulse 2s ease-in-out infinite;
}

@keyframes buttonPulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.btn-secondary {
  background: var(--gradient-primary);
  backdrop-filter: blur(10px);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 30px;
	font-weight: bold;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display:inline-block;
	font-size:1.1rem;
}

.btn-secondary:hover {
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.3);
}

.hero-visual {
  text-align: center;
}

.audio-wave-visual {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 8px;
  height: 120px;
  margin-bottom: var(--spacing-md);
}

.wave-bar {
  width: 8px;
  background: white;
  border-radius: 4px;
  animation: wave 1.5s ease-in-out infinite;
  animation-delay: var(--delay);
}

@keyframes wave {
  0%, 100% {
    height: 20px;
  }
  50% {
    height: 100px;
  }
}

.visual-info {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  padding: var(--spacing-sm);
  border-radius: 12px;
  display: inline-block;
}

.info-label {
  display: block;
  font-size: 0.9rem;
  opacity: 0.8;
  margin-bottom: var(--spacing-xs);
}

.info-value {
  font-weight: 600;
}

.scroll-indicator {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-arrows {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border: 2px solid white;
  border-left: none;
  border-top: none;
  transform: rotate(45deg);
  animation: scrollArrow 2s ease-in-out infinite;
  margin: 5px 0;
}

.arrow-1 {
  animation-delay: 0s;
}

.arrow-2 {
  animation-delay: 0.3s;
}

.arrow-3 {
  animation-delay: 0.6s;
}

@keyframes scrollArrow {
  0% {
    opacity: 0;
    transform: rotate(45deg) translateY(-10px);
  }
  50% {
    opacity: 1;
    transform: rotate(45deg) translateY(0);
  }
  100% {
    opacity: 0;
    transform: rotate(45deg) translateY(10px);
  }
}

/* 功能特点 */
.features {
  padding: var(--spacing-xl) 0;
  background-color: white;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-tag {
  display: inline-block;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
  letter-spacing: 1px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

/* Tab选项卡样式 */
.feature-tabs {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background: white;
  border-radius: 12px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid rgba(255,152,13,.08);
  min-width: 120px;
}

.tab-item:hover {
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(255, 69, 0, 0.1);
}

.tab-item.active {
  background: var(--gradient-primary);
  border-color: transparent;
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(255, 69, 0, 0.2);
}

.tab-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  transition: var(--transition);
}

.tab-item.active .tab-icon {
  color: white;
}

.tab-item span {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-dark);
  transition: var(--transition);
}

.tab-item.active span {
  color: white;
}

/* Tab内容区域 */
.feature-content {
  position: relative;
  margin-top: var(--spacing-lg);
}

/* 轮播容器样式 */
.carousel-container {
  position: relative;
  display: flex;
  align-items: center;
}

.carousel-wrapper {
  flex: 1;
  position: relative;
  overflow: visible;
  padding: 20px 120px;
  min-height: 500px;
}

.carousel-track {
  position: relative;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-item {
  position: absolute;
  width: 50%;
  max-width: 500px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-effect);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0;
  transform: translateZ(-200px) scale(0.6);
  z-index: 0;
}

.carousel-item.active {
  width: 80%;
  max-width: 800px;
  opacity: 1;
  transform: translateZ(0) scale(1);
  z-index: 3;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.carousel-item.prev {
  width: 60%;
  max-width: 600px;
  opacity: 0.5;
  transform: translateZ(-100px) translateX(-60%) scale(0.8);
  z-index: 2;
}

.carousel-item.next {
  width: 60%;
  max-width: 600px;
  opacity: 0.5;
  transform: translateZ(-100px) translateX(60%) scale(0.8);
  z-index: 2;
}

.carousel-item img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
}

.carousel-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: white;
  padding: var(--spacing-md);
  font-size: 1.1rem;
  font-weight: 600;
}

/* 滑动按钮 */
.slider-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: white;
  border: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  color: var(--primary-color);
  flex-shrink: 0;
}

.slider-btn:hover {
  background: var(--gradient-primary);
  color: white;
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(255, 69, 0, 0.3);
}

.slider-btn:active {
  transform: scale(0.95);
}

.feature-card {
  background: white;
  border-radius: 16px;
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-effect);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.feature-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  font-size: 1.5rem;
  color: white;
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

.feature-card p {
  color: var(--text-muted);
  line-height: 1.6;
}

/* AI 配音 */
.ai-voices {
  padding: var(--spacing-xl) 0;
  background-color: var(--bg-light);
}

.voices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.voice-card {
  background: white;
  border-radius: 12px;
  padding: var(--spacing-md);
  box-shadow: var(--shadow-effect);
  transition: var(--transition);
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.voice-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.voice-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.voice-avatar {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  margin: 0 auto var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
	overflow: hidden;
}
.voice-avatar img {
	width:100%;
}

.voice-card h3 {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-dark);
}

.voice-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-sm);
  line-height: 1.5rem;
	height:3.0rem;
}

.voice-preview-btn {
  background: var(--bg-light);
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: var(--spacing-sm);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
  width: 100%;
}

.voice-preview-btn:hover {
  background: var(--primary-light);
  color: white;
  border-color: var(--primary-light);
}

.more-voices-btn {
  text-align: center;
  margin-top: var(--spacing-lg);
}

/* 多人对话模式 */
.workflow {
  padding: var(--spacing-xl) 0;
  background-color: white;
}

.dialogue-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: start;
  margin-top: var(--spacing-xl);
}

.dialogue-preview {
  position: relative;
}

.dialogue-scene {
  background: linear-gradient(135deg, #1a1a2e, #16213e);
  border-radius: 20px;
  padding: var(--spacing-lg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.scene-header {
  margin-bottom: var(--spacing-md);
}

.scene-tag {
  display: inline-block;
  background: var(--gradient-primary);
  color: white;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.scene-header h3 {
  color: white;
  font-size: 1.3rem;
}

.dialogue-messages {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.message-item {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-start;
}

.message-item.right {
  flex-direction: row-reverse;
}

.avatar {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.avatar.male {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
}

.avatar.female {
  background: linear-gradient(135deg, #f093fb, #f5576c);
  color: white;
}

.avatar.robot {
  background: linear-gradient(135deg, #4facfe, #00f2fe);
  color: white;
}

.message-content {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: 80%;
}

.message-item.right .message-content {
  background: rgba(255, 69, 0, 0.2);
}

.speaker {
  display: block;
  color: var(--primary-light);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.message-content p {
  color: white;
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 0;
}

.voice-wave {
  display: flex;
  align-items: center;
  gap: 3px;
  margin-top: 8px;
  height: 20px;
}

.voice-wave span {
  width: 3px;
  height: 100%;
  background: var(--primary-light);
  border-radius: 2px;
  animation: waveAnim 1s ease-in-out infinite;
}

.voice-wave span:nth-child(1) { animation-delay: 0s; height: 8px; }
.voice-wave span:nth-child(2) { animation-delay: 0.1s; height: 15px; }
.voice-wave span:nth-child(3) { animation-delay: 0.2s; height: 10px; }
.voice-wave span:nth-child(4) { animation-delay: 0.3s; height: 18px; }
.voice-wave span:nth-child(5) { animation-delay: 0.4s; height: 12px; }

@keyframes waveAnim {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(0.5); }
}

.dialogue-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.dialogue-feature-item {
  display: flex;
  gap:2rem;
  align-items: flex-start;
  padding: var(--spacing-md);
  background: var(--bg-light);
  border-radius: 16px;
  transition: var(--transition);
}

.dialogue-feature-item:hover {
  transform: translateX(10px);
  box-shadow: var(--shadow-effect);
}

.dialogue-feature-item .feature-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.dialogue-feature-item h4 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 4px;
	min-width: 6rem;
}

.dialogue-feature-item p {
  color: var(--text-muted);
  font-size: 1.0rem;
  line-height: 1.8;
}



/* 数据统计版块 */
.stats-section {
  background: linear-gradient(135deg, #fff5f0, #fef8f3);
  padding: var(--spacing-xl) 0;
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 30%, rgba(255, 69, 0, 0.05) 0%, transparent 50%),
              radial-gradient(circle at 80% 70%, rgba(255, 152, 0, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.stats-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  text-align: center;
  position: relative;
  z-index: 2;
}

.stats-subtitle {
  color: var(--text-muted);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: var(--spacing-md);
}

.stats-title {
  color: var(--text-dark);
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xl);
}

.counter-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.counter {
  width: 70px;
  height: 70px;
  border: 2px solid var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-dark);
  background: white;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.counter::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 69, 0, 0.1), transparent);
  transition: left 0.5s ease;
}

.counter:hover::before {
  left: 100%;
}

.counter.separator {
  border: none;
  background: transparent;
  font-size: 2.2rem;
  color: var(--text-muted);
  width: 25px;
  box-shadow: none;
}

.counter.plus {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background: rgba(255, 69, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
}

.counter:hover {
  border-color: var(--primary-color);
  box-shadow: 0 6px 25px rgba(255, 69, 0, 0.3);
  transform: translateY(-3px);
}

/* 音色应用场景版块 */
.voice-scenarios-section {
  padding: var(--spacing-xl) 0;
  background-color: white;
}

.voice-scenarios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.voice-scenario-card {
  background: var(--bg-light);
  border-radius: 16px;
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-effect);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.voice-scenario-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.voice-scenario-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.scenario-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  color: white;
}

.voice-scenario-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
}

.voice-scenario-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.recommended-voices {
  background: rgba(255, 69, 0, 0.1);
  border-radius: 8px;
  padding: var(--spacing-sm);
  display: inline-block;
}

.recommended-voices span {
  font-size: 0.85rem;
  color: var(--primary-color);
  font-weight: 500;
}

/* 声音功能展示版块 */
.voice-features-section {
  padding: var(--spacing-xl) 0;
  background: linear-gradient(135deg, #fff5f0, #fef8f3);
  position: relative;
  overflow: hidden;
}

.voice-features-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap:1rem;
  align-items: center;
}

.voice-features-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.voice-features-visual::before,
.voice-features-visual::after {
  content: '';
  position: absolute;
  width: 450px;
  height: 450px;
  border: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: circleRotate 15s ease-in-out infinite;
  z-index: 0;
  opacity: 0.2;
}

.voice-features-visual::after {
  width: 420px;
  height: 420px;
  border-color: var(--secondary-color);
  animation: circleRotate 18s ease-in-out infinite reverse;
  opacity: 0.5;
}

@keyframes circleRotate {
  0% {
    transform: rotate(0deg) scale(1);
    opacity: 0.2;
  }
  25% {
    transform: rotate(90deg) scale(1.1);
    opacity: 0.5;
  }
  50% {
    transform: rotate(180deg) scale(1);
    opacity: 0.3;
  }
  75% {
    transform: rotate(270deg) scale(0.9);
    opacity: 0.2;
  }
  100% {
    transform: rotate(360deg) scale(1);
    opacity: 0.1;
  }
}

.features-circle {
  position: relative;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255, 152, 0, 0.1);
  display: flex;
  justify-content: center;
  align-items: center;
}

.circle-center {
  position: relative;
  z-index: 2;
}

.play-button {
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: 50%;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: all 0.3s ease;
}

.play-button:hover {
  transform: scale(1.1);
  box-shadow: 0 15px 40px rgba(255, 152, 0, 0.3);
}

.feature-point {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  z-index: 1;
  transition: all 0.3s ease;
}

.feature-point:hover {
  transform: translateY(-5px);
}

.feature-point .point-icon {
  width: 48px;
  height: 48px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.feature-point:hover .point-icon {
  background: var(--primary-color);
  color: white;
  box-shadow: 0 6px 20px rgba(255, 69, 0, 0.3);
}

.feature-point span {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dark);
}

/* 功能点位置 */
.feature-point.continuous {
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.feature-point.speed {
  top: 100px;
  right: 60px;
}

.feature-point.polyphone {
  bottom: 100px;
  right: 60px;
}

.feature-point.effects {
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.feature-point.voice-change {
  bottom: 100px;
  left: 60px;
}

.feature-point.pronunciation {
  top: 100px;
  left: 60px;
}

.voice-features-text {
  max-width: 500px;
}

.voice-features-text h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.features-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.features-list {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.features-list li {
  position: relative;
  padding-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
  font-size: 1rem;
}

.features-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: 700;
}

.btn-primary体验-btn {
  display: inline-block;
  background: var(--gradient-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: 30px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  font-size: 1.1rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-primary体验-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 69, 0, 0.3);
}

/* 一站式配音服务 */
.service-section {
  padding: var(--spacing-xl) 0;
  background-color: var(--bg-light);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.service-card {
  background: white;
  border-radius: 16px;
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-effect);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.service-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  color: white;
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* 应用场景 */
.scenarios {
  padding: var(--spacing-xl) 0;
  background-color:#FFFFFF;
}

.scenarios-grid {
  display: flex;
  flex-direction: row;
  gap:1.5rem;
}

.scenarios-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap:1.5rem;
}

.scenarios-row:first-child {
  grid-template-areas:
    "large small small"
    "small large large";
  grid-template-rows: repeat(2, auto);
}

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

.scenario-card {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-effect);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.scenario-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.scenario-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.scenario-card.large {
  grid-row: span 1;
  grid-column: span 2;
}

.scenario-card.small {
  grid-row: span 1;
  grid-column: span 1;
}

.scenario-image {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.scenario-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.scenario-card:hover .scenario-image img {
  transform: scale(1.1);
}

.bottom-left .scenario-image {
  height: 550px;
	max-width: 400px;
}

.scenario-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.6));
  display: flex;
  align-items: center;
  justify-content: center;
}

.scenario-icon {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.scenario-card:hover .scenario-icon {
  background: var(--gradient-primary);
  transform: scale(1.1);
}

.scenario-content {
  padding:1rem 1.5rem;
}

.scenario-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom:0.5rem;
  color: var(--text-dark);
}

.scenario-content p {
  color: var(--text-muted);
  line-height: 1.6;
}

/* 下载区域 */
.download {
  position: relative;
  padding: var(--spacing-xl) 0;
  background: var(--gradient-primary);
  color: white;
  text-align: center;
  overflow: hidden;
}

.download-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.download-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  filter: blur(100px);
  animation: glowPulse 4s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.3;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0.6;
  }
}

.download-content {
  position: relative;
  z-index: 2;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.download-text {
  margin-bottom: var(--spacing-lg);
}

.download-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 20px;
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
  font-weight: 600;
}

.download-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.download-content p {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}

.download-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-lg);
}

.download-btn {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  min-width: 200px;
  justify-content: center;
}

.download-btn:hover {
  background:  rgba(255, 255, 255, 0.4);
  transform: translateY(-5px);
  box-shadow: var(--glow-effect);
}

.download-btn.primary {
  background: rgba(255,255,255,.5);
  color: var(--primary-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.download-btn.primary:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-icon {
	display: block;
  font-size: 1.5rem;
	width:3.0rem;
	height:3.0rem;
}
.btn-icon img {
	width:100%;
}

.btn-info {
  text-align: left;
}

.btn-label {
  display: block;
  font-size: 0.8rem;
  opacity: 0.8;
}

.btn-platform {
  display: block;
  font-size: 1.1rem;
  font-weight: 700;
}

.download-features {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.download-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.9rem;
}

.download-feature svg {
  width: 16px;
  height: 16px;
}

/* 页脚 */
footer {
  background-color: var(--bg-dark);
  color: var(--text-light);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--primary-light);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.footer-logo .logo-icon {
  color: var(--primary-light);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.9rem;
}

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

.footer-copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  width: 100%;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8rem;
}

/* 回到顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  box-shadow: var(--shadow-effect);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
	border:none;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--glow-effect);
}

/* 响应式设计 */
@media (max-width: 768px) {
	.hero {
		min-height:40rem;
		height:40rem;
	}
	.btn-primary.btn-large {
		padding:0.8rem 1.8rem;
		font-size:1.1rem;
	}
	.btn-primary.btn-large i {
    display: block;
    width: 1.5rem;
    height: 1.5rem;
}
	.scroll-arrows {
		gap:4px;
	}
	.scroll-arrow {
		width:14px;
		height:14px;
	}
	.feature-tabs {
		gap:1rem;
	}
	.tab-item {
		padding:1rem;
		min-width: inherit;
	}
	.feature-content {
		margin-top:0;
	}
	.carousel-wrapper {
		min-height:300px;
	}
	.carousel-track {
		height:300px;
	}
	.carousel-wrapper {
		padding:0;
	}
	.carousel-item {
		width:100%;
	}
	.carousel-item img {
		height:300px;
	}
	
  .nav-center {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
  }
  
  .nav-center.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-links {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
  }
  
  .nav-right {
    display: none;
  }
  
  .nav-right-mobile {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    width: 100%;
    justify-content: center;
  }
  
  .mobile-menu-btn {
    display: block;
    margin-inline-start: auto;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    text-align: left;
    gap: var(--spacing-lg);
  }
  
  .hero-text {
    max-width: 100%;
    text-align: left;
    padding-left: 0;
  }
  
  .title-main {
    font-size: 2.5rem;
  }
  
  .title-sub {
    font-size: 1.2rem;
  }
  
  .hero-actions {
    justify-content: flex-start;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .dialogue-showcase {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
	  margin-top: 0;
  }
  
  .dialogue-scene {
    padding: var(--spacing-md);
  }
  
  .message-content {
    max-width: 70%;
  }
  
  .dialogue-feature-item {
    padding: var(--spacing-sm);
	  gap:1rem;
  }
  
  .service-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); 
    gap: 1rem;
	  margin-top:0;
  }
	
	.service-card {
		padding:1rem;
	}
	.service-icon {
		width:64px;
		height:64px;
	}
	.service-icon svg {
		width:32px;
		height:32px;
	}
  
  .scenarios-grid {
    flex-direction: column;
  }
  
  .scenarios-row {
    grid-template-columns: 1fr;
    grid-template-areas: none;
  }
  
  .scenarios-row:first-child {
    grid-template-rows: auto;
  }
  
  .scenario-card {
    grid-row: span 1;
    grid-column: span 1;
  }
  
  .scenario-card.large {
    grid-row: span 1;
    grid-column: span 1;
  }
  
  .scenario-card.small {
    grid-row: span 1;
    grid-column: span 1;
  }
  
  .stats-subtitle {
		margin-bottom:0.5rem;
	}
  .stats-title {
    font-size: 2.0rem;
	  margin-bottom: 2.5rem;
  }
  
  .counter {
    width: 50px;
    height: 70px;
    font-size: 1.8rem;
  }
  
  .counter-container {
    gap: 8px;
  }
  
  .counter.separator {
    width: 20px;
    font-size: 1.8rem;
  }
  
  .counter.plus {
    font-size: 1.8rem;
  }
  
  .voice-features-content {
    grid-template-columns: 1fr;
    text-align: center;
	  gap:4rem;
  }
  
  .features-circle {
    width: 300px;
    height: 300px;
  }
  
  .play-button {
    width: 100px;
    height: 100px;
  }
  
  .feature-point {
    transform: scale(0.8);
  }
  
  .feature-point.speed {
    right: 40px;
    top: 50px;
  }
  
  .feature-point.polyphone {
    right: 40px;
    bottom: 70px;
  }
  
  .feature-point.voice-change {
    left: 40px;
	  bottom:70px;
  }
  
  .feature-point.pronunciation {
    left: 40px;
	  top: 50px;
  }
  
  .voice-features-text h2 {
    font-size: 1.5rem;
	  margin-bottom: 1.0rem;
  }
	.features-desc {
		font-size:1.0rem;
	}
	.features-list {
		display: grid;
    grid-template-columns: repeat(2, 1fr); 
    gap: 10px;
		margin-bottom: 1.5rem;
	}
	.features-list li {
		text-align: left;
	}
	
  .scenario-card {
    grid-row: span 1;
    grid-column: span 1;
  }
  
  .download-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .download-btn {
    width: 250px;
  }
  
  .download-features {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-sm);
  }
  
  .footer-links {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-sm);
  }
	.voices-grid {
	display: grid;
    grid-template-columns: repeat(2, 1fr);  
    gap: 20px;	
	}
	.voice-card {
		padding:1.5rem;
	}
	.voice-card p {
		line-height:1.5rem;
		height:4.5rem;
	}
	.voice-features-visual::before, .voice-features-visual::after {
		width:360px;
		height:360px;
	}
	.feature-point.continuous {
		top:10px;
	}
	.feature-point.effects {
		bottom:10px;
	}
	
	.features, .ai-voices, .workflow, .service-section, .scenarios {
		padding:2.5rem 0;
	}
	.section-header {
		margin-bottom:3rem;
	}
	.bottom-left .scenario-image {
		height:auto;
	}
	.download {
		padding:2.5rem 0;
	}
	.download-content h2 {
		font-size:1.8rem;
	}
}

@media (max-width: 480px) {
  .title-main {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .section-container {
    padding: 0 var(--spacing-sm);
  }
  
  .nav-container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero-content {
    padding: 0 var(--spacing-sm);
  }
	.download-content {
		padding:0;
	}
	footer {
		padding:1.5rem 0;
	}
  .footer-container {
	  gap:1.2rem;
  }
	.footer-copyright {
		padding-top:1rem;
	}
}

/* 加载动画 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}