/* 全局样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #3a86ff;
  --secondary: #8338ec;
  --accent: #ff006e;
  --dark: #1a1a2e;
  --light: #f8f9fa;
  --gray: #6c757d;
  --gradient: linear-gradient(135deg, var(--primary), var(--secondary));
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--dark);
  background-color: var(--light);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 导航栏样式 */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all 0.3s ease;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

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

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

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  transition: width 0.3s ease;
}

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

.cta-btn {
  background: var(--gradient);
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(58, 134, 255, 0.3);
  border: none;
  cursor: pointer;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(58, 134, 255, 0.4);
}

/* 首屏样式 */
.hero {
  min-height: 100vh;
  padding-top: 100px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-content p {
  font-size: 1.2rem;
  color: var(--gray);
  margin-bottom: 2rem;
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  transform: rotate(3deg);
  transition: transform 0.5s ease;
}

.hero-image img:hover {
  transform: rotate(0) scale(1.02);
}

/* 特性部分 */
.features {
  padding: 8rem 2rem;
  background-color: var(--dark);
  color: white;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 5rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient);
  border-radius: 2px;
}

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

.feature-card {
  background: rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 15px;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-card:hover {
  transform: translateY(-10px);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.feature-card p {
  color: rgba(255, 255, 255, 0.7);
}

/* 下载页面样式 */
.download-section {
  min-height: 100vh;
  padding-top: 120px;
  padding-bottom: 60px;
}

.download-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.download-card {
  background: white;
  border-radius: 15px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  border: 1px solid #eaeaea;
}

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

.download-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.download-card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.download-version {
  color: var(--gray);
  margin-bottom: 1rem;
}

.download-btn {
  display: block;
  width: 100%;
  padding: 1rem;
  background: var(--gradient);
  color: white;
  text-align: center;
  text-decoration: none;
  border-radius: 10px;
  font-weight: 600;
  transition: all 0.3s ease;
  margin-top: 1.5rem;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(58, 134, 255, 0.3);
}

.update-log {
  margin-top: 4rem;
  background: white;
  border-radius: 15px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.update-log h3 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}

.update-item {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid #eaeaea;
}

.update-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.update-date {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.update-content {
  color: var(--gray);
  line-height: 1.8;
}

.update-content ul {
  list-style: none;
  padding-left: 1rem;
}

.update-content li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
}

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

/* FAQ页面样式 */
.faq-section {
  min-height: 100vh;
  padding-top: 120px;
  padding-bottom: 60px;
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

.faq-item {
  background: white;
  border-radius: 15px;
  margin-bottom: 1.5rem;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.5rem;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.3s ease;
}

.faq-question:hover {
  background-color: rgba(58, 134, 255, 0.05);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  background-color: #f8f9fa;
}

.faq-answer-content {
  padding: 0 1.5rem 1.5rem;
  color: var(--gray);
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-icon {
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* 页脚样式 */
footer {
  background: var(--dark);
  color: white;
  padding: 3rem 2rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links h4 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: white;
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
}

/* 响应式设计 */
@media (max-width: 992px) {
  .hero-content h1 {
    font-size: 2.8rem;
  }
  
  .hero-container {
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-content p {
    max-width: 100%;
  }
  
  .hero-image img {
    max-width: 80%;
    margin-top: 2rem;
  }
  
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
}

@media (max-width: 576px) {
  .hero-content h1 {
    font-size: 2.2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
  }
  
  .cta-btn {
    width: 100%;
    text-align: center;
  }
}